Consulta: subjectFacets:"Heterosis"
Registros recuperados: 64
Data/hora: 10/06/2024 16:23:46

HETEROTIC ESTIMATION AND ADAPTABILITY OF TOMATO HYBRIDS FOR FRUIT YIELD AND ITS RELATED TRAITS IN PAKISTAN.
Provedor de dados: 196
Autores: Javed, Ahsan; Akram, Atif; Tabassum, Muhammad Ijaz; Ahmad, Nadeem; Sarwar, Muhammad; Atif, Muhammad Jawaad.
Current study is emphasizing on the estimation of heterosis for different yield attributing traits and adaptability of tomato hybrids. It was performed in the research area of VCRP, HRI, NARC Islamabad during 2018-2019. Crossing was completed among six parents followed by line × tester. The analyzed data depicted significant differences (P ≤ 0.01) among all the characters.Due to desirable high negative heterotic values hybrids Peto-86 × Nagina and Riograndi × Roma were found suitable for breeding early maturing hybrids. For plant height maximum positive heterosis was observed in Riograndi × Nagina, for no. of cluster/plant in Naqeeb × Roma, for traits like flower cluster-1, fruit cluster-1, fruit length &amp;amp; width and single fruit weight in Naqeeb ×...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Heterosis; Heterobeltiosis; Hybrid vigor.
Ano: 2022
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/6582

Heterosis entre poblaciones de maíz de la raza chalqueño con diferente grado de divergencia genética
Provedor de dados: 32
Autores: Esquivel Esquivel, Gilberto.
Con el objeto de evaluar heterosis y los efectos de aptitud combinatoria general (ACG) y específica (ACE) en relación con la amplitud de origen geográfico en etapas tempranas del desarrollo y en productividad en campo, se evaluaron en un arreglo dialélico, diseño II de Griffing 15 poblaciones progenitoras nativas de maíz, sus 105 cruzamientos y otros genotipos adicionales de los Valles Altos de México. Se incluyeron poblaciones progenitoras cuyo origen se ubica en el área de distribución geográfica de la raza Chalqueño (Valles Altos de México) con antecedentes en programas de mejoramiento genético en los Valles Altos de México; ademàs, se incluyeron poblaciones nativas del área de la raza Chalqueño o sus variantes (Chalqueño-Celaya, Chalqueño-Cónico). Para...
Tipo: Tesis
Palavras-chave: Zea mays L.; Vigor inicial; Heterosis; Cruzas dialélicas; Chalqueño; Doctorado; Genética; Early vigor; Heterosis; Diallelic crosses.
Ano: 2008
URL: http://hdl.handle.net/10521/1618

Algunos aspectos genéticos y bioquímicos de las atocianinas en poblaciones criollas de maíz de granos pigmentados
Provedor de dados: 32
Autores: Espinosa Trujillo, Edgar.
La variabilidad del color de grano en 114 poblaciones criollas de maíz se clasificó  en seis grupos, en el ciclo agrícola PV-2003. Se seleccionaron seis poblaciones, una  del blanco, una del amarillo, una del rojo (rojo-2), dos del azul (azul-1 y azul-2) y  una del púrpura (rojo-1), para establecer un sistema de cruzas dialélicas en el  ciclo agrícola PV-2004. En la F1 semilla de las cruzas hubo diferencias entre  progenitores, en la cantidad de antocianinas y su distribución en el pericarpio y  en la capa de aleurona. Los efectos aditivos (ACG) y maternos (EM) fueron  sobresalientes para el grosor del pericarpio y de la aleurona, para la  concentración de antocianinas en las mismas estructuras y para su concentración  por unidad de peso de grano (CAkg)....
Palavras-chave: Antocianinas; Pigmentos; Aptitud combinatoria; Maíz criollo; Heterosis anthocyanins; Natural pigments; Combining ability; Native maize; Populations; Heterosis.
Ano: 2012
URL: http://hdl.handle.net/10521/788

Adaptación a clima templado de poblaciones exóticas de maíz mediante selección masal visual.
Provedor de dados: 32
Autores: Gómez Espejo, Ana Luisa.
Independientemente de la eficiencia teórica de los métodos de mejoramiento, es la cantidad de variabilidad genética en las poblaciones la que determina el progreso genético obtenido por ciclo de selección; por ello, es de particular interés para todo programa de mejoramiento genético de maíz (Zea mays L.) incrementar la variabilidad genética de su germoplasma base, siendo para ello una vía la adaptación y uso de germoplasma exótico tropical o subtropical en las regiones de clima templado. En este trabajo se consideró la expresión del rendimiento de grano como indicador de la adaptación a clima templado, proponiéndose además que los genes de adaptación son dominantes sobre los de inadaptación. Así, durante los ciclos P-V 2011 y 2012, se evaluaron 48...
Palavras-chave: Zea mays L.; Adaptación; Selección masal; Rendimiento; Heterosis; Cruzas; Razas exóticas tropicales; Razas de clima templado; Adaptation; Crosses; Yield; Mass selection; Tropical exotic races; Temperate climate races; Genética; Maestría.
Ano: 2014
URL: http://hdl.handle.net/10521/2269

Evaluación de dos generaciones de híbridos y progenitores de sorgo tolerante al frío
Provedor de dados: 32
Autores: León Velasco, Humberto.
En el Colegio de Postgraduados se han formado dos generaciones de híbridos y  progenitores de sorgo [Sorghum bicolor (L.) Moench] tolerantes al frío adaptados a los Valles  Altos Centrales de México. En 1996 se establecieron cinco experimentos, cuyos objetivos  fueron: (a) evaluar la variabilidad genética de las dos generaciones para rendimiento de grano  (RG) y otras características; (b) caracterizar la adaptabilidad de los genotipos para RG y  precocidad; (c) estimar la aptitud combinatoria general (ACG) en cada generación de líneas  progenitoras para RG, peso (PG) y número de granos (NG); (d) comparar el comportamiento per  se y la ACG de las líneas; (e) estimar la heterosis y heterobeltiosis de los híbridos para esas tres  variables; y (f) comparar...
Palavras-chave: Orghum bicolor L. Moench; Aptitud combinatoria; Heterosis; Híbridos; Tolerancia al frío Sorghum bicolor L. Moench; Combining ability; Heterosis; Hybrids; Cold tolerance.
Ano: 2012
URL: http://hdl.handle.net/10521/816

Evaluación de dos generaciones de híbridos y progenitores de sorgo tolerante al frío
Provedor de dados: 32
Autores: León Velasco, Humberto.
En el Colegio de Postgraduados se han formado dos generaciones de híbridos y  progenitores de sorgo [Sorghum bicolor (L.) Moench] tolerantes al frío adaptados a los Valles  Altos Centrales de México. En 1996 se establecieron cinco experimentos, cuyos objetivos  fueron: (a) evaluar la variabilidad genética de las dos generaciones para rendimiento de grano  (RG) y otras características; (b) caracterizar la adaptabilidad de los genotipos para RG y  precocidad; (c) estimar la aptitud combinatoria general (ACG) en cada generación de líneas  progenitoras para RG, peso (PG) y número de granos (NG); (d) comparar el comportamiento per  se y la ACG de las líneas; (e) estimar la heterosis y heterobeltiosis de los híbridos para esas tres  variables; y (f) comparar...
Tipo: Tesis
Palavras-chave: Sorghum bicolor L. Moench; Aptitud combinatoria; Heterosis; Híbridos; Tolerancia al frío; Doctorado; Genética; Combining ability; Hybrids; Cold tolerance.
Ano: 2007
URL: http://hdl.handle.net/10521/1207

Evaluación de dos generaciones de híbridos y progenitores de sorgo tolerante al frío
Provedor de dados: 32
Autores: León Velasco, Humberto.
En el Colegio de Postgraduados se han formado dos generaciones de híbridos y  progenitores de sorgo [Sorghum bicolor (L.) Moench] tolerantes al frío adaptados a los Valles  Altos Centrales de México. En 1996 se establecieron cinco experimentos, cuyos objetivos  fueron: (a) evaluar la variabilidad genética de las dos generaciones para rendimiento de grano  (RG) y otras características; (b) caracterizar la adaptabilidad de los genotipos para RG y  precocidad; (c) estimar la aptitud combinatoria general (ACG) en cada generación de líneas  progenitoras para RG, peso (PG) y número de granos (NG); (d) comparar el comportamiento per  se y la ACG de las líneas; (e) estimar la heterosis y heterobeltiosis de los híbridos para esas tres  variables; y (f) comparar...
Palavras-chave: Orghum bicolor L. Moench; Aptitud combinatoria; Heterosis; Híbridos; Tolerancia al frío Sorghum bicolor L. Moench; Combining ability; Heterosis; Hybrids; Cold tolerance.
Ano: 2012
URL: http://hdl.handle.net/10521/910

Estimación de parámetros genéticos en cruzas intervarietales de maíz para la región semicálida de Guerrero.
Provedor de dados: 32
Autores: Palemón Alberto, Francisco.
La orografía y agroecología del estado de Guerrero es muy diversa. En las áreas de altitud intermedia (1200 a 1700 m) prácticamente no se siembran con variedades mejoradas de maíz, debido a su limitada adaptación a las condiciones climáticas y edáficas; por lo que, prevalece la siembra de poblaciones nativas. En las áreas semicálidas se ha seleccionado germoplasma subtropical local; paralelamente, en Valles Altos se aplicó selección para adaptación en cuatro poblaciones tropicales durante 10 años. Con estas siete poblaciones progenitoras se generaron 12 cruzas intervarietales (CI) en arreglo factorial, con el propósito de valorar los avances del mejoramiento genético y detectar alguna CI de valor comercial. Las CI, sus progenitores y testigos se evaluaron...
Palavras-chave: Zea mays L.; Variedades tropicales y subtropicales; Aptitud combinatoria general y específica; Heterosis; Estabilidad; Rendimiento de grano; Tropical and subtropical varieties; General and specific combining ability; Stability; Grain yield; Genética; Doctorado.
Ano: 2010
URL: http://hdl.handle.net/10521/284

QTLs y heterosis en jitomate en una población F2 derivada de una cruza interespecífica.
Provedor de dados: 32
Autores: Hernández Bautista, Aurelio.
Para estudiar y aprovechar la diversidad genética de los parientes silvestres del jitomate (Solanum lycopersicum L.), es necesario seguir explorando nuevas fuentes de genes que puedan contribuir significativamente a la formación de variedades rendidoras y de alta calidad de fruto. De acuerdo con los resultados, se observó que los progenitores difieren significativamente (p &lt; 0.05) en la mayoría de los caracteres, excepto en pH. Las variables peso, largo y ancho de fruto, días a floración y madurez de frutos presentaron un grado de dominancia parcial a 11904, mientras que grados Brix expresó aditividad. La mayoría de los valores de heterosis fueron negativos, excepto para el número total de frutos (183.9 %), frutos por racimo (5.1 %) y días a madurez...
Palavras-chave: Solanum lycopersicum; Heterosis; Heredabilidad en sentido amplio; Grado de dominancia; S. pimpinellifolium; QTLs; Broad sense heritability; Dominance degree; Genética; Maestría.
Ano: 2013
URL: http://hdl.handle.net/10521/2026

Vigor híbrido y su abatimiento en ocho cruzas de sorgo para grano
Provedor de dados: 32
Autores: Infante Heller, Leslie; Márquez Sánchez, Fidel; Miranda Colín, Salvador.
Por mucho tiempo se consideró que en las plantas autógamas no se manifestaba el vigor híbrido. Su manifestación cuantitativa depende de la constitución genética de los progenitores considerados y de la acción génica ya que puede llegar a tener valores de cero o negativos. El objeto del presente trabajo es investigar si las condiciones climáticas de las zonas templadas y calientes de México permiten la expresión de la heterosis en sorgos híbridos de primera generación en un porcentaje aceptable que signifique mayor producción y mejores ingresos para el agricultor.
Tipo: Artículo
Palavras-chave: Híbridos; Autogamia; Heterosis; Sorgo en grano.
Ano: 1966
URL: http://hdl.handle.net/10521/1801

Algunos aspectos genéticos y bioquímicos de las atocianinas en poblaciones criollas de maíz de granos pigmentados
Provedor de dados: 32
Autores: Espinosa Trujillo, Edgar.
La variabilidad del color de grano en 114 poblaciones criollas de maíz se clasificó en seis grupos, en el ciclo agrícola PV-2003. Se seleccionaron seis poblaciones, una del blanco, una del amarillo, una del rojo (rojo-2), dos del azul (azul-1 y azul-2) y una del púrpura (rojo-1), para establecer un sistema de cruzas dialélicas en el ciclo agrícola PV-2004. En la F1 semilla de las cruzas hubo diferencias entre progenitores, en la cantidad de antocianinas y su distribución en el pericarpio y en la capa de aleurona. Los efectos aditivos (ACG) y maternos (EM) fueron sobresalientes para el grosor del pericarpio y de la aleurona, para la concentración de antocianinas en las mismas estructuras y para su concentración por unidad de peso de grano (CAkg). Por sus...
Tipo: Tesis
Palavras-chave: Antocianinas; Pigmentos; Aptitud combinatoria; Maíz criollo; Heterosis; Anthocyanins; Natural pigments; Combining ability; Native maize; Populations; Heterosis.
Ano: 2008
URL: http://hdl.handle.net/10521/1171

Algunos aspectos genéticos y bioquímicos de las atocianinas en poblaciones criollas de maíz de granos pigmentados
Provedor de dados: 32
Autores: Espinosa Trujillo, Edgar.
La variabilidad del color de grano en 114 poblaciones criollas de maíz se clasificó  en seis grupos, en el ciclo agrícola PV-2003. Se seleccionaron seis poblaciones, una  del blanco, una del amarillo, una del rojo (rojo-2), dos del azul (azul-1 y azul-2) y  una del púrpura (rojo-1), para establecer un sistema de cruzas dialélicas en el  ciclo agrícola PV-2004. En la F1 semilla de las cruzas hubo diferencias entre  progenitores, en la cantidad de antocianinas y su distribución en el pericarpio y  en la capa de aleurona. Los efectos aditivos (ACG) y maternos (EM) fueron  sobresalientes para el grosor del pericarpio y de la aleurona, para la  concentración de antocianinas en las mismas estructuras y para su concentración  por unidad de peso de grano (CAkg)....
Palavras-chave: Antocianinas; Pigmentos; Aptitud combinatoria; Maíz criollo; Heterosis anthocyanins; Natural pigments; Combining ability; Native maize; Populations; Heterosis.
Ano: 2012
URL: http://hdl.handle.net/10521/880

Evaluation of fitness in F2 generations of Africa Biofortified Sorghum event 188 and weedy Sorghum bicolor ssp. drummondii
Provedor de dados: 69
Autores: Magomere,Titus; Obukosia,Silas; Albertsen,Mark; Wambugu,Florence; Kamanga,Daniel; Njuguna,Michael; Gaffney,Jim; Zhao,Zuo-Yu; Che,Ping; Aseta,Antony; Kimani,Esther; Mwasame,Evans.
Background: Introgression of transgenes from crops to their wild species may enhance the adaptive advantage and therefore the invasiveness of and weedy forms. The study evaluated the effect of Africa Biofortified Sorghum (ABS) genes from ABS event 188 on the vegetative and reproductive features of the F2 populations derived from crosses with Sorghum bicolor subsp. drummondii. Results: F1 populations were obtained from reciprocal crosses involving ABS event 188 and its null segregant with inbred weedy parents from S. bicolor subsp. drummondii. Four F2 populations and four parental populations were raised in RCBD with 4 replications in a confined field plot for two seasons. Vegetative and reproductive traits were evaluated. The vigour shown in the F2...
Tipo: Journal article
Palavras-chave: Beta-carotene; Heterosis; Transgenics; Phospho-mannose isomarese.
Ano: 2016
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582016000400008

Combining ability of summer-squash lines with different degrees of parthenocarpy and PRSV-W resistance
Provedor de dados: 74
Autores: Nogueira,Douglas Willian; Maluf,Wilson Roberto; Figueira,Antonia dos Reis; Maciel,Gabriel Mascarenhas; Gomes,Luiz Antonio Augusto; Benavente,Cesar Augusto Ticona.
The aim was to assess heterosis in a set of 16 summer-squash hybrids, and evaluate the combining capacity of the respective parental lines, which differed as to the degree of parthenocarpy and resistance to PRSV-W (Papaya Ringspot Virus-Watermelon strain). The hybrids were obtained using a partial diallel cross design (4 x 4). The lines of parental group I were 1 = ABX-037G-77-03-05-01-01-bulk, 2 = ABX-037G-77-03-05-03-10-bulk, 3 = ABX-037G77-03-05-01-04-bulk and 4 = ABX-037G-77-03-05-05-01-bulk, and of group II, 1' = ABX-037G-77-03-05-04-08-bulk, 2' = ABX-037G-77-03-05-02-11-bulk, 3' = Clarice and 4' = Caserta. The 16 hybrids and eight parental lines were evaluated for PRSV-W resistance, parthenocarpic expression and yield in randomized complete-block...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cucurbita pepo; Heterosis; Hybrids; Potyvirus; Papaya ringspot virus.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572011000400014

Partial diallel analysis of agronomic characters in rice (Oryza sativa L.)
Provedor de dados: 74
Autores: Torres,Edgar Alonso; Geraldi,Isaias O.
Rice (Oryza sativa L.) breeding seeking to combine high productivity and cold tolerance for the temperate Latin America region is an important challenge. We estimated some useful parameters which can be used to investigate the genetic control of agronomic characters in crosses combining cold tolerance and productivity. A partial diallel design was used in crosses between six tropical indica rice cold susceptible genotypes (group 1) and seven japonica or indica/japonica cold tolerant rice genotypes (group 2). Parents and crosses were evaluated for agronomic characters under field conditions in two different experiments in 2005. The results showed significant mid-parent heterosis for all characters (plant height, tiller number, days to 50% flowering, panicle...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: General combining ability; Heterosis; Hybrid rice; Specific combining ability.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000400018

Use of ridge regression for the prediction of early growth performance in crossbred calves
Provedor de dados: 74
Autores: Pimentel,Eduardo da Cruz Gouveia; Queiroz,Sandra Aidar de; Carvalheiro,Roberto; Fries,Luiz Alberto.
The problem of multicollinearity in regression analysis was studied. Ridge regression (RR) techniques were used to estimate parameters affecting the performance of crossbred calves raised in tropical and subtropical regions by a model including additive, dominance, joint additive or "profit heterosis" and epistatic effects and their interactions with latitude in an attempt to model genotype by environment interactions. A software was developed in Fortran 77 to perform five variant types of RR: the originally proposed method; the method implemented by SAS; and three methods of weighting the RR parameter lambda. Three mathematical criteria were tested with the aim of choosing a value for the lambda coefficient: the sum and the harmonic mean of the absolute...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crossbreeding; Epistasis; Genotype by environment interaction; Heterosis; Multicollinearity.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000400006

Combining ability and agronomic performance of sweet pepper in greenhouse
Provedor de dados: 75
Autores: Santos,Paulo R; Melo,Roberto A; Costa,Kleyton DS; Rocha,Fernando AT; Costa,Ítalo JN; Carvalho Filho,José LS; Menezes,Dimas.
RESUMO Objetivou-se avaliar a capacidade combinatória de linhagens de pimentão, identificar combinações híbridas superiores quanto à produtividade e qualidade de frutos e inferir sobre os modos de ação gênica envolvidos na expressão dos caracteres agronômicos de importância econômica. Para isso, cinco linhagens de pimentão do Projeto Melhoramento Genético de Solanáceas Para Sistema de Cultivo, da Universidade Federal Rural de Pernambuco foram cruzadas, em um esquema dialélico parcial, com dois híbridos simples: Atlantis (ATL) e Valdor (VAL), utilizados como testadores. As linhagens, bem como os híbridos utilizados, foram escolhidas em função de apresentarem características morfológicas divergentes, tais como: formato, comprimento e diâmetro do fruto,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Capsicum annuum; Heterosis; Partial diallel.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362017000100026

Heterosis in okra hybrids obtained by hybridization of two methods: traditional and experimental
Provedor de dados: 75
Autores: Maciel,Gabriel M; Luz,José MQ; Campos,Saulo FB; Finzi,Rafael R; Azevedo,Breno NR.
ABSTRACT High heterosis values can be obtained using hybrid okra seeds. However, despite high heterotic values, it is very difficult to produce hybrid okra seeds. The objective of this study was to evaluate an experimental methodology of hybridization. Two different methods of hybridization were used: traditional manual hybridization with complete emasculation followed by hand pollination (artificial) and, an experimental methodology, performing manual hybridization with incomplete emasculation followed by entomophilous natural pollination between two inbred lines (UFU-QB-040D and UFU-QB-107G).These inbred lines were obtained from three selection cycles. Three hybrid types were obtained from the two hybridization methods: F1 THM(UFU-QB-040D x UFU-QB-107G),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Abelmoschus esculentus; Hybridization; Heterosis; Pollination.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362017000100119

Diallel cross among fresh market tomato inbreeding lines
Provedor de dados: 75
Autores: Souza,Lívia M de; Paterniani,Maria Elisa AGZ; Melo,Paulo César T de; Melo,Arlete MT de.
The general combining ability (GCA), specific combining ability (SCA), and heterosis were studied in a complete diallel cross among fresh market tomato breeding lines with reciprocal excluded. Fifteen genotypes (five parents and ten hybrids) were tested using a randomized complete block design, with three replications, and the experiments were conducted in Itatiba, São Paulo state, Brazil, in 2005/06. The yield components evaluated were fruit yield per plant (FP), fruit number per plant (FN), average fruit weight (FW); cluster number per plant (CN); fruit number per cluster (FC), fruit wall thickness (FT) and number of locules per fruit (NL). Fruit quality components evaluated were total soluble solids (SS); total titratable acidity (TA); SS/TA ratio,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Solanum lycopersicum; Yield components; Fruit quality; Combining ability; Heterosis; Plant breeding.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362012000200011

Production and characterization of inter and intraspecific hybridization eggplant
Provedor de dados: 75
Autores: Ghani,Muhammad A; Abbas,Muhammad M; Ziaf,Khurram; Azam,Muhammad; Ali,Basharat; Amjad,Muhammad; Anjum,Romana; Noor,Anam; Zahid,Mubashir.
ABSTRACT The eggplant is a highly valuable horticultural crop grown all over the world and it is of substantial economic importance in Asia. However, its production is severely threatened by several soil-borne and foliar diseases, insect-pests, drought, heat, and frost damage. Therefore, efforts to transfer useful resistance genes into eggplant from their wild relatives is important. In the present study, interspecific and intraspecific hybridization was carried out, that included three cultivated genotypes of eggplant (Solanum melongena MEE, Solanum melongena MEP, Solanum melongena MEB) and one wild Solanum species (Solanum incanum INC). The F1 hybrids were made by inter and intraspecific hybridization. A total of 632 possible inter and intraspecific...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Solanum melongena; Solanum incanum; Solanaceae; Hybrid; Heterosis; Yield; Wild species.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362020000400407

Biometric evaluation of morpho-agronomic traits in pepper lines and hybrids
Provedor de dados: 75
Autores: Andrade Júnior,Valter C; Pedrosa,Carlos E; Miranda,Thalita G; Valadares,Nermy R; Pereira,Samuel L; Azevedo,Alcinei M.
ABSTRACT In this study, we aimed to evaluate pepper lines and hybrids (Capsicum chinense and C. annuum) in order to obtain information on agronomic performance, heterosis, heterobeltiosis, phenotypic correlations and genetic dissimilarity. We evaluated lines PIM-030, BGH-433, BGH-4285, Numex Sweet, Numex Garnet and simple hybrids Numex Sweet x PIM-030, Numex Garnet x PIM-030 and BGH-4285 x BGH-433. The research was conducted with eight treatments and four replications in a greenhouse, at campus JK of UFVJM. Twenty two agronomic traits were evaluated. The hybrid BGH-4285 x BGH-433 presents higher heterosis and heterobeltiosis for total fruit productivity and productivity of total fruit dry mass, information of great value for future breeding studies. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Capsicum spp; Breeding; Heterosis; Canonic variables; Mahalanobis distance.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362018000300357

Agronomic potential and selection of okra hybrids to obtain potential genitors
Provedor de dados: 75
Autores: Maciel,Gabriel M; Finzi,Rafael R; Marra,Alexandre William C; Carvalho,Fábio J; Nogueira,Ana Paula O.
ABSTRACT Evaluation of pre-commercial hybrids in a germplasm bank is essential for determining its commercial potential or its utility as a potential genitor in a breeding program. The objective of this study was to determine genetic divergence and per se behavior of 47 pre-commercial hybrids from okra germplasm bank of the Universidade Federal de Uberlândia. Precocity index (%), number of fruits (fruits per plant), average fruit mass (g) and productivity (g per plant) were evaluated. Analysis of genetic divergence was performed by multivariate analysis using Mahalanobis distance with different clustering methods (UPGMA and canonical analysis). The performance of hybrids was compared by Scott-Knott (p= 0.05). A significant genetic variability among okra...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Abelmoschus esculentus; Genetic variability; Heterosis.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362018000100112

Эколого-географическая гипотеза происхождения крупной черноморской ставриды (Pisces, Carangidae)
Provedor de dados: 13
Autores: Зуев, Г. В.; Мельникова, Е. Б.
На основе сведений о пространственных, структурно-функциональных и экологических характеристиках крупной ставриды (КС) и их изменчивости в связи с условиями среды обитания, предложена эколого-географическая гипотеза о происхождении КС и причинах ее массового появления в Черном море в конце 40-х годов XX в. Согласно данной версии, КС является результатом вторичного скрещивания между черноморским (Trachurus mediterraneus ponticus Aleev) и средиземноморским (T. mediterraneus mediterraneus Steind) подвидами, которое имело место в Черном море, куда средиземноморская форма проникла в наиболее маловодном за более чем 60-и летний период 1943 г. Высокая жизнеспособность первых поколений КС, характеризуемая поистине гигантскими (на фоне родительских форм) размерами...
Tipo: Journal Contribution
Palavras-chave: Черноморская крупная ставрида; Гибрид; Промысел; Улов; Миграция; Гетерозис; Поколение; Large-sized Black Sea scad; Hybrid; Fishing industry; Catch; Migration; Heterosis; Generation Degeneration Heterosis Migrations Hybrids Heterosis Hybrids http://aims.fao.org/aos/agrovoc/c_3705 http://aims.fao.org/aos/agrovoc/c_3707.
Ano: 2003
URL: http://repository.ibss.org.ua/dspace/handle/99011/164

Avaliação de cultivares de banana em Rio Branco, Acre.
Provedor de dados: 14
Autores: LEDO, A. da S.; LEDO, F. J. da S.; SILVA, S. de O. e.
Este trabalho objetivou avaliar o comportamento de nove genótipos de bananeira: JV 03-15, PA 03-22, PA 12-03-porte médio; Mysore, Thap Maeo, Pelipita, Nam, Yangambi km 5, e Nam-porte alto, durante o 1º, 2º e 3º ciclos de produção, nas condições edafocliomáticas de Rio Branco-AC. Observou-se que a cv. Pelipita obteve o maior desenvolvimento vegetativo em altura e circunferência do pseudocaule, seguida da Thap Maeo, Mysore e Pacovan. Quanto ao número de folhas vivas por ocasião da colheita, as cultivares Mysore, e Thap Maeo apresentaram maior vigor. A cv. Pacovan, por ocasião do 2º ciclo, não apresentava nenhuma folha, em função da alta incidência de sigatoka-amarela, o que comprometeu, significativamente, o peso dos cachos. No 1º ciclo de produção, a Thap...
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Rio Branco (AC); Acre; Amazônia Ocidental; Western Amazon; Amazonia Occidental; Aclimatación; Bananos; Factores ambientales; Fitomejoramiento.; Melhoramento genético vegetal; Banana; Musa sp; Variedade resistente; Vigor híbrido; Aclimatação; Condição ambiental; Características Agronômicas; Plátano.; Plant breeding; Bananas; Agronomic traits; Heterosis; Acclimation; Environmental factors.
Ano: 1997
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/492502

Identificação de pragas e doenças e avaliação de variedades copa/porta-enxerto de citros no Estado do Acre.
Provedor de dados: 14
Autores: THOMAZINI, M. J.; OLIVEIRA, T. K. de; ALBUQUERQUE, E. S. de; LESSA, L. S.; CAVALCANTE, M. de J. B.
O Estado do Acre apresenta características propícias ao desenvolvimento da cultura dos citros. Porém, o curto período de oferta de frutos, mudas de baixa qualidade, indefinição de cultivares adaptadas, problemas fitossanitários e a falta de informações técnicas tornam-se fatores limitantes à ampliação do parque produtivo. Este trabalho teve como objetivos identificar as principais pragas, seus inimigos naturais e as doenças mais importantes da cultura dos citros em quatro municípios do Acre e avaliar aspectos vegetativos e produtivos de genótipos locais de citros, bem como o desenvolvimento vegetativo de combinações de cultivares copa e porta-enxerto. A pesquisa foi realizada de junho de 2002 a junho de 2004. Folhas de laranja, tangerina e limão foram...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: West Indian fruit fly; Embrapa Acre; Rio Branco (AC); Ramal Jarinau; Brasiléia (AC); Ramal Samaúma; Plácido de Castro (AC); Acre; Amazônia Ocidental; Western Amazon; Amazonia Occidental; Citros; Enfermedades y desórdenes de las plantas; Tangerinos.; Portainjertos; Naranjas; Crecimiento de planta; Limones; Laranja; Citrus sinensis; Limão; Citrus limonia; Tangerina; Citrus reticulata; Variedade resistente; Crescimento; Vigor híbrido; Porta enxerto; Doença de planta; Praga de planta; Identificação; Ácaro; Mosca; Campo Experimental; Características Agronômicas.; Citrus; Oranges; Lemons; Tangerines; Agronomic traits; Plant diseases and disorders; Plant growth; Heterosis; Rootstocks; Mites.
Ano: 2005
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/504506

Melhoramento genético em propriedades leiteiras do Acre.
Provedor de dados: 14
Autores: CARNEIRO JUNIOR, J. M.
bitstream/item/159338/1/26312.pdf;  bitstream/item/159339/1/263122.pdf;  bitstream/item/159340/1/263123.pdf;  bitstream/item/159341/1/263124.pdf
Tipo: Artigo de divulgação na mídia (INFOTECA-E)
Palavras-chave: Acre; Amazônia Ocidental; Western Amazon; Amazonia Occidental; Nutrición animal; Cruce de animales; Cultivo a pequeña escala; Elaboración de leche; Ganado de leche; Inseminación artificial; Rentabilidad; Selección artificial; Tecnología lechera.; Gado leiteiro; Produção leiteira; Pequeno produtor; Rentabilidade; Nutrição animal; Tecnologia apropriada; Melhoramento genético animal; Reprodução animal; Seleção; Cruzamento animal; Vigor híbrido; Inseminação artificial; Dairy cattle; Milk production; Small-scale farming; Profitability; Animal nutrition; Dairy technology; Animal breeding; Artificial selection; Crossing; Heterosis; Artificial insemination.
Ano: 2016
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1068961

Impact of the reproduction dynamics on genetic variation in the European flat oyster Ostrea edulis
Provedor de dados: 5
Autores: Lapegue, Sylvie; Taris, Nicolas; Lallias, Delphine; Bonhomme, Francois; Boudry, Pierre.
The European flat oyster (Ostrea edulis L.) is a marine bivalve whose natural geographical distribution ranges along the European Atlantic coast from Norway to Morocco, in addition to the Mediterranean and Black Sea. The latest results obtained on the genetic differentiation between these populations have led us to pursue studies at a finer scale, in order to estimate the effective number of breeders and the temporal dynamics of reproduction and, more specially, recruitment. Several experiments were performed to document (1) the variance in allele frequencies during a natural settlement period; (2) the paternal contribution to fertilization by analyzing larvae sampled at the brooding stage within individual females; (3) the variance of individual...
Tipo: Text
Palavras-chave: Ostrea edulis; Oyster; Sexual reproduction; Population dynamics; Oyster culture; Inbreeding; Heterosis; Genetic isolation; Genetic diversity; Breeding success; Biological fertilization.
Ano: 2004
URL: http://archimer.ifremer.fr/doc/2004/acte-3436.pdf

Assortative fertilization and selection at larval stage in the mussels Mytilus edulis and M-galloprovincialis
Provedor de dados: 5
Autores: Bierne, Nicolas; David, Pierre; Boudry, Pierre; Bonhomme, F.
Assortative mating (prezygotic isolation) and reduced hybrid fitness (postzygotic isolation) are typically invoked to explain the stability of hybrid zones. In the tension zone model. these factors work in opposition to migration, which promotes genetic homogeneity. Many marine animals migrate over long distances through a planktonic larval stage. Therefore. strong reproductive isolation is needed to maintain stable marine hybrid zones. However, surprisingly little is known about mating preferences and hybrid fitness in marine organisms. Smooth-shelled mussels (Mytilus spp.) form a well-known species complex, with hybridization over extensive areas such as the contact zone of M. edulis and M. galloprovincialis around European Atlantic coasts. This paper...
Tipo: Text
Palavras-chave: Preferential fertilization; Mytilus galloprovincialis; Mytilus edulis; Hybrid viability; Heterosis; Gamete competition.
Ano: 2002
URL: http://archimer.ifremer.fr/doc/2002/publication-2781.pdf

Metapopulation patterns of additive and nonadditive genetic variance in the sea bass (   Dicentrarchus labrax   )
Provedor de dados: 5
Autores: Guinand, Bruno; Vandeputte, Marc; Dupont-nivet, Mathilde; Vergnet, Alain; Haffray, Pierrick; Chavanne, Herve; Chatain, Beatrice.
Describing and explaining the geographic within-species variation in phenotypes (“phenogeography”) in the sea over a species distribution range is central to our understanding of a variety of eco-evolutionary topics. However, phenogeographic studies that have a large potential to investigate adaptive variation are overcome by phylogeographic studies, still mainly focusing on neutral markers. How genotypic and phenotypic data could covary over large geographic scales remains poorly understood in marine species. We crossed 75 noninbred sires (five origins) and 26 dams (two origins; each side of a hybrid zone) in a factorial diallel cross in order to investigate geographic variation for early survival and sex ratio in the metapopulation of the European sea...
Tipo: Text
Palavras-chave: Additive and nonadditive variance; Darwin's corollary; Heterosis; Mito-nuclear epistasis; Pleiotropy.
Ano: 2017
URL: http://archimer.ifremer.fr/doc/00376/48759/49154.pdf

Genetics and statistical association between lethal alleles and quantitative yield factors in maize (Zea mays l.)
Provedor de dados: 46
Autores: Salerno,Juan Carlos; Kandus,Mariana; Boggio Ronceros,R.; Sorarrain,O.; González,Cecilia; Almorza,David.
The objective of this work is to study the genetic process related to the hybrid vigour (heterosis) and the identification of quantitative trait loci (QTL) in maize. A biometric model was built using the mathematical formalism relating to the discrete absorbent Markov chain in canonical form, in order to analyse the evolution of chromosome segments, with recessive lethal genes linked with grain yield factors through generations. The grain yield obtained from an inbred maize line regulated by a balanced lethal system, and other lines without this system as control, were evaluated during five inbreeding generations. The use of the Markov chain theory for the study of evolution during these generations was a different approach of the classical mathematical...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Maize; Lethal alleles; Heterosis; Markov Chains; QTL.
Ano: 2007
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1852-62332007000100003

Alternative cytoplasmic male sterility systems in sorghum and their utilization
Provedor de dados: 30
Autores: A.A. ( A. Ashok Kumar ).
Palavras-chave: Cytoplasm; Genes; Sorghum; Hybrids; Heterosis; Transcription; DNA; Genetic structures; Segregation; Genomes.
Ano: 2008
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3149

Finger Millet Genetic Male-sterile Line INFM 95001
Provedor de dados: 30
Palavras-chave: Self pollination; Alleles; Heterosis; Segregation; Millets; Threshing; Crossing over; Sexual reproduction; Grain; Breeds (animals).
Ano: 1997
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3879

Research and development of hybrid pigeonpea
Provedor de dados: 30
Autores: K.B.
Palavras-chave: Pigeonpeas; Hybrids; Heterosis; Seed production; Self pollination; Genes; Cytoplasm; Backcrossing; Segregation; Grain legumes.
Ano: 1996
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/4191

Sweet sorghum - a potential alternate raw material for bio-ethanol and bio-energy
Provedor de dados: 30
Autores: Reddy, B.V.S.,( Belum V. S. Reddy ).
Palavras-chave: Alcohols; Sorghum; Confectionery; Hybrids; Molasses; Sugarcane; Carbohydrates; Reducing sugars; Heterosis; Production technology.
Ano: 2005
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3267

Effect of dates of planting, plant geometry and number of seedlings on growth and yield of hybrid rice (Oryza sativa L.)
Provedor de dados: 30
Autores: V.K.
Palavras-chave: Hybrids; Grain; Heterosis; Planting date; Dry matter; Spacing; Yields; Field experimentation; Plant population; Leaf area index.
Ano: 2008
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/4676

Influence of cytoplasmic-nuclear male sterility on agronomic performance of sorghum hybrids
Provedor de dados: 30
Autores: Ramesh, S.
Palavras-chave: Cytoplasm; Hybrids; Agronomic characters; Grain; Heterosis; Sorghum; Crossing over; Locus; Genes; Genomes.
Ano: 2006
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3192

Heterosis and genetic distance in intervarietal corn hybrids
Provedor de dados: 86
Autores: Baretta,Diego; Nardino,Maicon; Carvalho,Ivan Ricardo; Pelegrin,Alan Junior de; Ferrari,Mauricio; Oliveira,Victoria Freitas de; Szareski,Vinícius Jardel; Oliveira,Antonio Costa de; Barros,Willian Silva; Souza,Velci Queiróz de; Maia,Luciano Carlos da.
Abstract: The objective of this work was to evaluate the performance of intervarietal corn (Zea mays) hybrids with topcross crosses between landrace populations, and to confirm whether genetic dissimilarity between populations is correlated with the heterosis of the intervarietal hybrids in the field. Nine topcross hybrids were evaluated with their tester 'BRS Planalto', and the following landrace populations were used as parents: Argentino Branco, Dente de Ouro, Amarelão, Criolão, Caiano Rajado, Branco Oito Carreiras, Branco Roxo Índio, Cateto Branco, and Argentino Amarelo. The tester 'BRS Planalto' and the topcross hybrids Branco Oito Carreiras x 'BRS Planalto' and Criolão x 'BRS Planalto' showed higher per se potential for grain yield. The topcross...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Genetic dissimilarity; Heterosis; Landraces; Topcross.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000102806

Genetic analysis of productive and reproductive traits in multiple-breed dairy cattle populations
Provedor de dados: 86
Autores: Ribeiro,Virgínia Mara Pereira; Merlo,Fernanda Albuquerque; Gouveia,Gabriela Canabrava; Winkelstroter,Larissa Kretli; Abreu,Luíza Rodrigues Alves; Silva,Marcos Vinícius Gualberto Barbosa da; Panetto,João Cláudio do Carmo; Paiva,Leandro de Carvalho; Cembranelli,Marcello de Aguiar Rodrigues; Toral,Fabio Luiz Buranelo.
Abstract: The objective of this work was to determine whether the random regression model using linear splines (RRMLS) is suitable to estimate the genetic parameters for productive and reproductive traits of a multiple-breed dairy cattle population, as well as to investigate the effect of the genetic group of the progeny on the genetic merit of the sire. The multiple-trait model (MTM) and the RRMLS with one knot fitted for every genetic group were used to obtain the genetic parameters. Records of 1/2 Holstein + 1/2 Gyr (1/2HG), 5/8 Holstein + 3/8 Gyr (5/8HG), and 3/4 Holstein + 1/4 Gyr (3/4HG) crossbreed dams were considered. The RRMLS showed better fitting. The additive and residual variances estimated by the MTM and the RRMLS were similar. Heritability...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gyr; Heritability; Heterosis; Holstein; Selection.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017001101109

Combining ability of twelve maize populations
Provedor de dados: 86
Autores: Vacaro,Elton; Barbosa Neto,José Fernandes; Pegoraro,Diego Girardi; Nuss,Claudio Natalino; Conceição,Leo Duc Haa.
Genetic progress depends on germplasm quality and breeding methods. Twelve maize populations and their crosses were evaluated to estimate combining ability and potential to be included as source populations in breeding programs. Plant height, point of insertion of the first ear, number of ears per plant, number of grains per ear, root and stalk lodging and grain yield were studied in two locations in Brazil, during the 1997/98 season. Genotype sum of squares was divided into general (GCA) and specific (SCA) combining ability. Results indicated the existence of genetic divergence for all traits analyzed, where additive effects were predominant. The high heterosis levels observed, mainly in Xanxerê, suggested the environmental influence on the manifestation...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Germplasm; Heterosis; Genetic variation.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2002000100009

Diallel analysis for frogeye leaf spot resistance in soybean
Provedor de dados: 86
Autores: Gravina,Geraldo de Amaral; Sediyama,Carlos Sigueyuki; Martins Filho,Sebastião; Moreira,Maurílio Alves; Barros,Everaldo Gonçalves de.
Seven soybean cultivars (Bossier, Cristalina, Davis, Kent, Lincoln, Paraná and Uberaba), with different levels of resistance to Cercospora sojina, were crossed in a diallel design to determine the general (GCA) and specific (SCA) combining abilities relative to the inheritance of the resistance. Race 04 of the fungus was inoculated in the parents and in the 21 F1 hybrids in a greenhouse in a completely randomized design, with 12 replications. The reactions to the disease were evaluated 20 days after the inoculation, always on the most infected leaflet. Both GCA and SCA were significant for all the evaluated characters, being inferred that, for the expression of the characters, the additive, dominant and, possibly, epistatic genic actions were important....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycine max; Cercospora sojina; Combining ability; Heterosis; Genetic resistance; Genetic parameters.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2003000600002

Heterosis y aptitud combinatoria de poblaciones de maíz tropical
Provedor de dados: 85
Autores: De la Cruz-Lázaro,E; Castañón-Najera,G; Brito-Manzano,NP; Gómez-Vázquez,A; Robledo-Torres,V; Lozano del Río,AJ.
La estimación de parámetros genéticos en experimentos de cruzas dialélicas ayuda en la toma de decisiones objetivas en los programas de mejoramiento genético. Los objetivos de la presente investigación fueron estimar la heterosis, la aptitud combinatoria general (ACG) de ocho poblaciones de maíz (Zea mays L.) y la aptitud combinatoria específica (ACE) de 28 cruzas directas. Las poblaciones evaluadas fueron: 21, 22, 23, 25, 32, 43, 49 y la variedad comercial VS 536. Para estimar los efectos de ACG y ACE se empleó el método 2 de efectos aleatorios del dialélico de Griffing, en un diseño experimental de bloques completos al azar con dos repeticiones por fecha de siembra. El análisis dialélico indicó diferencias estadísticas (p=0,01 y p=0,05) en las fuentes de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays L.; Aptitud combinatoria; Cruzas dialélicas; Heterosis; Maíz tropical.
Ano: 2010
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572010000100003

Manual de laboratorio Calosa como herramienta de selección para tolerancia del maíz al aluminio
Provedor de dados: 31
Autores: Arcos,   Alba Lucia; Narro,   Luis A,.
Tipo: Report
Palavras-chave: Zea mays; Calosa; Herencia; Dialelo; Heterosis; Métodos de selección; Suelos ácidos; Germoplasma; Colombia; Crop Production/Industries; F30.
Ano: 2009
URL: http://purl.umn.edu/56175

Live weight, carcass, and meat evaluation of Nellore, Curraleiro Pé-Duro, and their crossbred products in Piauí State
Provedor de dados: 96
Autores: Carvalho,Geraldo Magela Côrtes; Frota,Marcílio Nilton Lopes da; Lima Neto,Anisio Ferreira; Azevêdo,Danielle Maria Machado Ribeiro; Araujo Neto,Raimundo Bezerra de; Araujo,Adriana Mello de; Pereira,Elzânia Sales; Carneiro,Maria Socorro de Souza.
ABSTRACT The objective of this study was to evaluate live weight and carcass traits, from birth to slaughter, and meat quality of Nellore (NEL), Curraleiro Pé-Duro (CPD), and crossbred (F1) products in the state of Piauí, Brazil. Progenies from CPD, NEL, and their F1 crossbred (½ NEL + ½ CPD), a total of 252, males and females, from birth to 24 months of age, were evaluated in a comparative study in growth performance. The steers were sent to slaughter at 28 months of age and carcasses and meat quality were analyzed. After slaughter, carcass weight, dressing percentage and Longissimus dorsi area (rib eye area) were evaluated; an index was created by the relationship between these measures per hundred kg of chilled carcass produced. To assess meat quality,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Beef cattle; Crossbreeding; Heterosis; Meat quality; Local breeds; Tropically adapted.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000500393

Carcass quality of crossbred steers with different degrees of zebu blood in the genotype: meta-analysis
Provedor de dados: 96
Autores: Venturini,Tiago; Menezes,Luís Fernando Glasenapp de; Kuss,Fernando; Martin,Thomas Newton; Vonz,Douglas; Paris,Wagner.
In order to evaluate the effect of the different percentages of zebu blood in the genotype of crossbred steers on carcass traits, a meta-analysis was carried out, using 30 studies conducted in Brazil that have been published since the year 2000. The parameters evaluated were hot carcass weight (221 estimates), cold carcass weight (232), hot carcass (236) and cold carcass yield (223), subcutaneous fat thickness (238) and the percentages of saw cut (233), forequarter (234) and sidecut (246 estimates). Initially, exploratory analysis was performed for each of the variables for detection of publication vices through the dispersion of observations by pointing out the outliers eliminated. Normality tests were normal and the data were subjected to analysis of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carcass yield; Crossbreeding; Heterosis.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011001100041

Performance and carcass traits in the diallel crossing of pacu and tambaqui
Provedor de dados: 96
Autores: Reis Neto,Rafael Vilhena; Serafini,Moacyr Antonio; Freitas,Rilke Tadeu Fonseca de; Allaman,Ivan Bezerra; Mourad,Natália Michele Nonato; Lago,Aline de Assis.
With the purpose of evaluating the changes and the degree of heterosis on performance and carcass traits of fish from the diallel crossing between Pacu and Tambaqui, four genetic groups were generated through hormonal induction: pacu, tambaqui, tambacu and paqui. For 196 days, 400 juveniles of each genetic group were stocked in a pond divided into four parts of equal size, one for each group. At the end of this period, when the fish weighed on average 1024 g (±115.52 g), 20 specimens of each genetic group were sampled, weighed, measured: head length; standard length; body height; and width; and also processed resulting in following body yield: viscera; carcass; head; fillet; rib; residue and skin yields. There was positive heterosis for body weight,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Body yield; Heterosis; Hybrids; Morphometry; Roundfish.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012001200002

Rendimientos productivos y reproductivos de vacas lecheras en el primer cruzamiento rotativo en el altiplano del centro de México
Provedor de dados: 108
Autores: Lammoglia Villagómez,Miguel Ángel; Ávila García,Jorge; Alarcón Zapata,Marco Antonio; Cabrera Núñez,Amalia; Gutiérrez Rodríguez,Alfredo; Daniel Rentería,Iliana.
La heterosis en ganado lechero cambia los parámetros productivos y reproductivos comparados con el ganado Holstein puro. El objetivo fue realizar cruzamientos rotativos con Holstein, Jersey, Montbeliarde y Sueco rojo y medir algunos rendimientos productivos y reproductivos. En los cruzamientos se usaron como base, vacas Holstein importadas (H; n = 200). Los grupos genéticos obtenidos de primera lactancia fueron: 1) H (n = 44), 2) F1J (50% Holstein y 50% Jersey; n = 58), 3) F1M (50% Holstein y 50% Montbeliarde; n = 72), 4) HJS (25% H, 25% J y 50% Sueco rojo S; n = 53). El porcentaje de vacas destinadas al rastro fue mayor (P = 0.05) en H (15%) que en las cruzas (5%). El periodo de días abiertos se prolongó (P = 0.03) en vacas H (160.8 ± 21.7), comparadas...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cruzamiento rotativo; Heterosis; Cruzas.
Ano: 2013
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S0301-50922013000100002

Performance of advanced generation from a hybrid Japanese cucumber
Provedor de dados: 63
Autores: Oviedo,Victoria Rossmary Santacruz; Godoy,Amanda Regina; Cardoso,Antonio Ismael Inácio.
Inbreeding reduces the vigor in plants as a result of a decrease in the proportion of heterozygous loci. However, the influence of inbreeding is different among the species. The objective of this work was to evaluate the inbreeding depression in a cucumber Japanese population. An F2 population was obtained from a commercial hybrid (Natsu suzumi), which was considered as S0 population. S1, S2, S3, S4 and S5 progenies were obtained by the 'Single Seed Descent' methodology. A complete blocks design with seven treatments (different generations of self pollination - S0 to S5 and the hybrid Natsu suzumi), and six replications of five plants per plot was used in protected cultivation from Aug. 21 to Nov. 29, 2002. Number of leaves, length of the main stem, number...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cucumis sativus L.; Breeding; Heterosis.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162008000500016

Heterotic responses of tropical elite maize accessions from Latin America with Brazilian testers
Provedor de dados: 63
Autores: Santos,Manoel Xavier dos; Pollak,Linda Maria; Carvalho,Hélio Wilson Lemos de; Pacheco,Cleso Antônio Patto; Gama,Elto Eugenio Gomes e; Guimarães,Paulo Evaristo de Oliveira; Andrade,Ramiro Vilela de.
Little emphasis has been placed on identifying new sources of tropical maize germplasm that can be used in breeding programs. Additional information on the performance and heterotic classification of tropical germplasm is needed. This study was conducted to identify elite maize accessions from Latin America that could contribute to increase the level of heterosis with the best heterotic patterns of Brazil. Seventy-two elite accessions from the Latin American Maize Project (LAMP) were crossed with the testers BR 105 (flint kernel Suwan background) and BR 106 (dent kernel Tuxpeño background). The 72 crosses plus 9 checks were evaluated using a simple 9 × 9 lattice in four locations that represent one tropical region. The combined analysis showed highly...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Germplasm; Selected acessions; Heterosis; Genetic resources.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162001000400019

Partial diallel cross between exotic and adapted maize populations evaluated in acid soil
Provedor de dados: 63
Autores: Morello,Camilo de Lellis; Miranda Filho,José Branco de; Gorgulho,Eliana Patrícia.
In Brazil, acid soils represent a large portion of the agricultural area and the development of cultivars with tolerance to acidity has shown to be feasible. The identification of germoplasm potentially tolerant to acidity was the purpose of this work. Two distinct groups of maize (Zea mays L.) populations were crossed according to the partial diallel mating scheme: Group [1] with six adapted populations and Group [2] with seven exotic varieties. All varieties and crosses were evaluated under the condition of acid and low fertility soil. Traits analyzed were: EY- ear yield, PH- plant height and EH- ear height. Outstanding varieties per se, with yield higher than 3 t ha-1, were SUWAN-2, TAITINGA, TAIÚBA and IUBATÃ in Group [1]; and CUPURICO DMR, TUXPEÑO...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Partial diallel; Heterosis; Acid soil; Aluminum tolerance.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162001000200014

Partial diallel to evaluate the combining ability for economically important traits of papaya
Provedor de dados: 63
Autores: Marin,Sergio Lucio David; Pereira,Messias Gonzaga; Amaral Júnior,Antonio Teixeira do; Martelleto,Luiz Aurélio Peres; Ide,Carlos David.
The dependence of Brazil on imported improved papaya seeds was the main motivation for this research that primarily intended to evaluate the combining ability of eight genotypes from the 'Solo' group, crossed with eight genotypes from the 'Formosa' group following a partial diallel scheme. The traits mean fruit weight, brix degree and flavor revealed prevalence of additive effects in both genetic groups, while plant height was preponderantly additive only for the 'Solo' genotypes. On the other hand, the yield trait expressed additive superiority for the 'Formosa' genotypes. For intrapopulation breeding for higher yield, the indicated genotypes are 'Maradol' and 'Cariflora' from the 'Formosa' group as well 'Sunrise Solo 783' and 'Sunrise Solo TJ' from the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carica papaya L.; Heterosis; Hybrids.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162006000600005

Genetic diversity and heterotic grouping of sorghum lines using SNP markers
Provedor de dados: 63
Autores: Silva,Karla Jorge da; Pastina,Maria Marta; Guimarães,Claudia Teixeira; Magalhães,Jurandir Vieira; Pimentel,Leonardo Duarte; Schaffert,Robert Eugene; Pinto,Marcos de Oliveira; Souza,Vander Fillipe de; Bernardino,Karine da Costa; Silva,Michele Jorge da; Borém,Aluízio; Menezes,Cicero Beserra de.
ABSTRACT: Sorghum breeding programs are based predominantly on developing homozygous lines to produce single cross hybrids, frequently with relatively narrow genetic bases. The adoption of complementary strategies, such as genetic diversity study, enables a broader vision of the genetic structure of the breeding germplasm. The purpose of this study was to evaluate the genetic diversity of sorghum breeding lines using structure analysis, principal components (PC) and clustering analyses. A total of 160 sorghum lines were genotyped with 29,649 SNP markers generated by genotyping-by-sequencing (GBS). The PC and clustering analyses consistently divided the R (restorer) and B (maintainer) lines based on their pedigree, generating four groups. Thirty-two B and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sorghum bicolor; Principal components; Restorer; Maintainer; Heterosis; Hybrid parents.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000601102

การวิเคราะห์ข้อมูลการถอดรหัส ที่ส่งผลต่อการแสดงออกของยีนที่แตกต่างกันในช่อดอกจากจีโนมข้าวลูกผสมและพันธุ์พ่อแม่
Provedor de dados: 106
Autores: Kulchana Ketsuwan.
Next Generation Sequencing (NGS): SOLiD System Sequencing Platform was applied to investigate the whole transcriptome of two hybrids (PTT06001H; H1 and PTT06008H: H2), two paternal lines (CK81; P1 and CK120; P2), and maternal line (IR79156; M). The data sets were aligned against the reference, precisely, the total numbers of the individual rice panicles sample aligned with Nipponbare ranking from the highest were as follows, P2 (9,747,077 reads), H1 (7,386,061 reads) , P1 (5,361,077 reads) , H2 (5,196,982 reads), and M (2,244,306 reads), respectively. The differentially expressed genes (DEGs) were identified and found that 2902, 1604, 3168, 3068, 1171, and 3031 genes were up-regulated (&gt; 2 fold) between M vs. H1, P1 vs. H1, M vs.P1, M vs. H2, P2 vs. H2,...
Tipo: PhysicalObject
Palavras-chave: Hybrid rice; Heterosis; Differentially expressed genes; DEGs; Genetic transformation; Gene expression; Transcription; Nucleotide analysis; Plant breeding; Rice productivity; ข้าว; พันธุ์ลูกผสม; ช่อดอก; การถ่ายทอดทางพันธุกรรม; การแสดงออกของยีน; การถอดรหัสพันธุกรรม; การวิเคราะห์นิวคลีโอไทด์; การปรับปรุงพันธุ์; ศักยภาพความดีเด่นเหนือพ่อแม่; การเพิ่มผลผลิต.
Ano: 2014
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5659

สมรรถนะการรวมตัวและความดีเด่นในลักษณะทางพืชสวนของผักกาดขาวปลี
Provedor de dados: 106
Autores: Kawee Sujipuli.
Thesis (M.Sc. in Agriculture)
Tipo: PhysicalObject
Palavras-chave: Chinese cabbages; Brassica campestris ssp. pekinensis; Breeding; Variety trials; Hybrid; Combining ability; Heterosis; Horticultural traits; Shape index; Mean weight; Efficiency ratio; Solidity; Kasetsart University Kamphaeng Saen campus; Nakhon Pathom province; ผักกาดขาวปลี; การผสมพันธุ์; การทดสอบพันธุ์; พันธุ์ลูกผสม; สมรรถนะการรวมตัว; ความดีเด่น; ลักษณะเด่น; ลักษณะทางพืชสวน; ดัชนีรูปร่าง; น้ำหนักหลังตัดแต่ง; น้ำหนักก่อนตกแต่ง; ค่าอัตราส่วนประสิทธิภาพ; ความหนาแน่น; มหาวิทยาลัยเกษตรศาสตร์ วิทยาเขตกำแพงแสน; จ.นครปฐม.
Ano: 1994
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5516

Seed yield of simple and trí-línear corn (Zea mays L.) hybrids for the mexican humid tropics
Provedor de dados: 109
Autores: Macías,Mauro Sierra; Rodríguez Montalvo,Flavio A.; Espinosa Calderón B,Alejandro; Tadeo Robledo,Margarita; Gómez Montiel,Noel Orlando; Vázquez Carrillo,María Griselda; Ugalde Acosta,Francisco Javier; Freyre,Sabel Barrón; Arellano,José Luis Del Rosario; Leyva Ovalle,Otto Raúl; Serna Lagunes,Ricardo; Meza,Pablo Andrés.
Abstract The objective of the work was to evalúate the agronomic performance and seed yield of tropical corn (Zea mays L.) of single and tri-linear crosses. In the spring-summer of 2015 and 2016, two essays were established in the states of Veracruz and Tabasco, Mexico. In the first essay, a group of 12 single crosses was evaluated, and in the second, a group of 18 tri-linear crosses was evaluated. In both essays, the treatments were distributed under a completely randomized block design with three replicates in 5 m long, two-row plots and 0.8 m between rows, with an initial population density of 62.500 plants ha-1. Within the simple cross trial, hybrids HE-3W, COMERCIAL 1, LT-164xLT-165, and HE-1W presented seed yields above the general mean (3384 kg...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agronomic performance; Genetic variation; Heterosis; Hybridization; Productivity.
Ano: 2021
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122021000200180

Efectos genéticos de la formación de calosa en ápices radicales de líneas de maíz resistentes y susceptibles a suelos ácidos
Provedor de dados: 109
Autores: Arcos,Alba Lucía; Narro,Luis Alberto; Salazar,Fredy; Caetano,Creuci.
El objetivo de este trabajo fue estudiar la herencia de la producción de calosa utilizando líneas endogámicas de maíz. Seleccionando 14 líneas (7 tolerantes y 7 susceptibles a suelos ácidos) se formó un dialelo que fue probado en campo y en invernadero. Se determinó el contenido de calosa en los 91 cruzamientos resultantes y los 14 progenitores. Para ello se colocaron las semillas en cámara de crecimiento en condiciones controladas. Después de 4-5 días las plántulas fueron transferidas a cubetas que contenían solución nutritiva con aireación constante. Luego de 48 horas se adicionaron 25 µM de aluminio (AlCl3) a cada una de las cubetas y se mantuvieron por 12 horas. Se cortaron tres ápices radicales de cada genotipo y se mantuvieron en etanol 96%. Para...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Calosa; Heredabilidad; Dialelo; Heterosis; Suelos ácidos.
Ano: 2007
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122007000400001

Heterotic parametrization for economically important traits in popcorn - DOI: 10.4025/actasciagron.v31i3.4689
Provedor de dados: 1
Autores: Vieira, Rafael Augusto; UEM; Souza Neto, Israel Leite; UEM; Bignotto, Lucas Souto; UEM; Cruz, Cosme Damião; UFV; Amaral Júnior, Antonio Teixeira do; UENF; Scapim, Carlos Alberto; UEM.
Six popcorn varieties were crossed in a diallel mating scheme to obtain 15 F1 hybrids, with the purpose of analyzing the estimates of heterotic parametrization for agronomically important traits. The genitors and hybrids were evaluated in randomized block design with three replications in Viçosa and Visconde do Rio Branco, in Minas Gerais State, Brazil, in three growing seasons. Six traits were evaluated, including grain yield and popping expansion. There were highly significant effects for treatments, varieties and mean heterosis for plant and ear heights, and for the others traits the significance extended to all sources of variation. Amarela and Viçosa revealed superiority for grain yield in relation to performance per se, while Rosa Claro expressed the...
Palavras-chave: 5.01.00.00-9    Agronomia diallel; Heterosis; Popping expansion; Bidirectional dominance; Zea mays L. diallel; Heterosis; Popping expansion; Bidirectional dominance; Zea mays L.
Ano: 2009
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/4689

Capacidade combinatória de linhagens de pimentão a partir de análise dialélica multivariada - DOI: 10.4025/actasciagron.v32i2.3768
Provedor de dados: 1
Autores: Nascimento, Ildon Rodrigues; UFT; Maluf, Wilson Roberto; Universidade Federal de Lavras - UFLA; Golçalves, Luciano Donizete; Empresa de Pesquisa Agropecuária de Minas Gerais - EPAMIG; Faria, Marcos Ventura; Universidade Estadual do Centro-Oeste - UNICENTRO; Resende, Juliano Tadeu Vilela de; Universidade Estadual do Centro-Oeste - UNICENTRO; Nogueira, Douglas Willian; Universidade Federal de Lavras - UFLA.
O trabalho teve como objetivo gerar informações sobre a capacidade combinatória de linhagens de pimentão por meio da análise dialélica multivariada. Foram utilizadas 13 linhagens de pimentão previamente selecionadas com base na reação ao mosaico amarelo do pimentão, sendo oito linhagens com reação do tipo resistência e cinco com reação do tipo suscetibilidade, num dialelo 8 x 5, mais as linhagens parentais. Os 53 tratamentos foram avaliados em estufa em delineamento de blocos casualizados com quatro repetições, sendo avaliadas a produção total e precoce de frutos, massa média de frutos e altura de plantas. A partir dessas quatro características foi realizada a análise dialélica univariada e multivariada. A análise dialélica multivariada apresentou...
Palavras-chave: 5.01.03.05-9 Capsicum annuum; Heterose; Efeito gênico; Seleção 5.01.03.05-9 Capsicum annuum; Heterosis; Gene effects; Selection.
Ano: 2010
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/3768

Genetic parameters of iron and zinc concentrations in Andean common bean seeds
Provedor de dados: 1
Autores: Zemolin, Allan Emanoel Mezzomo; Ribeiro, Nerinéia Dalfollo; Casagrande, Cleiton Renato; Silva, Maykon Júnior da; Arns, Fernanda Daltrozo.
The genetic parameter estimates of the iron and zinc concentrations in Andean common bean seeds were obtained using the IAC Boreal × Light Red Kidney and Ouro Branco × Light Red Kidney crosses. The parents and the F1, F1 reciprocal, F2, F2 reciprocal, and backcross BC11 and BC12 generations were evaluated in a field experiment that was carried out in the state of Rio Grande do Sul, Brazil. The iron concentration in Andean common bean seeds ranged from 24.70 to 102.40 mg kg-1 dry matter (DM), the zinc concentration ranged from 10.73 to 37.50 mg kg-1 DM, and no significant maternal effect was observed. The narrow-sense heritability ranged from low (h2n= 19.04%) to high (h2n= 63.60%) for the concentrations of iron and zinc, respectively. Hybrid vigor and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ciências Agrárias gain with selection; Heritability; Heterosis; Inheritance pattern; Maternal effect; Phaseolus vulgaris Fitotecnia.
Ano: 2016
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/30652

Evaluación de dos generaciones de híbridos y progenitores de sorgo tolerantes al frío. II: aptitud combinatoria, heterosis y heterobeltiosis
Provedor de dados: 115
Autores: León-Velasco,Humberto; Mendoza-Onofre,Leopoldo E.; Castillo-González,Fernando; Cervantes-Santana,Tarcicio; Martínez-Garza,Ángel.
En el Colegio de Postgraduados, México, se han formado dos generaciones de híbridos y progenitores experimentales de sorgo [Sorghum bicolor (L.) Moench] tolerantes al frío, adaptados a los Valles Altos Centrales de México. En 1996 se establecieron cinco experimentos (tres con riego y dos de secano), a 2250 m de altitud, para estimar la aptitud combinatoria general (ACG) de las líneas, así como la heterosis y heterobeltiosis de los híbridos para rendimiento, peso y número de granos; y comparar el comportamiento per se vs. la ACG de las líneas. Cada experimento incluyó 12 híbridos de primera generación, 80 de segunda y sus progenitores respectivos, más cuatro testigos, en un diseño látice cuadrado 11×11 con cuatro repeticiones, en parcelas de dos surcos de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sorghum bicolor; Aptitud combinatoria; Heterobeltiosis; Heterosis; Tolerancia al frío.
Ano: 2009
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952009000600007

Potential of pepper plant accessions for ornamental purposes using diallel analysis
Provedor de dados: 42
Autores: PESSOA,ANGELA M.S.; RÊGO,ELIZANILDA R. DO; SANTOS,CRISTINE A.P. DOS; CARVALHO,MICHELLE G. DE; MESQUITA,JÚLIO C.P. DE; RÊGO,MAILSON M. DO.
Abstract: The genus Capsicum is cultivated in various parts of the world, with C. annuum showing high diversity and potential for ornamental purposes and genetic improvement. The aim of this work was to evaluate the combining ability and heterosis of seedling and plant traits in accessions of ornamental pepper and their hybrids. Seven accessions of C. annuum were handcrossed and twelve quantitative plant traits were evaluated. The data were subjected to analysis of variance, the Scott-Knott test and diallel analysis using Griffing’s method I (fixed model). Heterosis and its components were also determined. Non-additive effects were found for seedling height, cotyledonous leaf length and width; stem diameter and chlorophyll b content. All other traits...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Capsicum annuum; Heterosis; General combining ability; Specific combining ability.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000700870

Combining ability among six common bean cultivars adapted to the North West Region of Paraná State, Brazil
Provedor de dados: 53
Autores: BARELLI,MARCO ANTONIO APARECIDO; GONÇALVES-VIDIGAL,MARIA CELESTE; AMARAL JÚNIOR,ANTONIO TEIXEIRA DO; VIDIGAL FILHO,PEDRO SOARES; SCAPIM,CARLOS ALBERTO.
Eight morpho-agronomic traits have been measured in six common bean (Phaseolus vulgaris L.) cultivars and their 15 hybrids aiming to estimate parents potential per se and heterotic effects of hybrid combinations (Gardner and Ebehart's method, 1966). Enough variability has bees detected among the parents for most of the studied characters. Excepting first pod insertion height the results have shown a great deal of complementation for the scored traits. Hybrids LPSPI 93-17 x FT Nobre and LPSPI 93-19 x FT Nobre have revealed the highest chances of selecting for earlier plant emergence and flowering cycle; on the other hand, 'LPSPI 93-17', 'Ápore', 'Rudá' and 'Campeão-1' have presented high potentials per se, as well as in hybrid combinations, for grain...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phaseolus vulgaris; Diallel analysis; Heterosis.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052000000200006

Genetic distance and its association with heterosis in cacao
Provedor de dados: 52
Autores: Dias,Luiz Antônio dos Santos; Marita,Jane; Cruz,Cosme Damião; Barros,Everaldo Gonçalves de; Salomão,Tânia Maria Fernandes.
The efficiency of cacao breeding program can be increased by choosing superior crosses to be made between divergent clones. We assessed the genetic distance among five clones with RAPD data (genetic distance - GD) and with yield component data (Mahalanobis distance - MD). The clones were evaluated in a diallel, during five years, for five yield components. A total of 130 RAPD bands were scored. GD and MD were used to determine the correlation between genetic distances among clones and the performance of their hybrids. The correlation between GD and MD was 0.67 (P=0.03). Both distances were related to heterotic performance of hybrids for wet seed weight/plant and wet seed weight/fruit. The average hybrid performance for the same two yield components was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Genetic distances; Heterosis; Performance data; RAPD data; Theobroma cacao L.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132003000300005

Selection of Coffea canephora parents from the botanical varieties Conilon and Robusta for the production of intervarietal hybrids
Provedor de dados: 65
Autores: Oliveira,Leilane Nicolino Lamarão de; Rocha,Rodrigo Barros; Ferreira,Fábio Medeiros; Spinelli,Victor Mouzinho; Ramalho,André Rostand; Teixeira,Alexsandro Lara.
ABSTRACT: The objective of this research was to quantify the genetic divergence of potential Coffea canephora parents, with the goal of developing progenies that associate the best traits of the Conilon and Robusta botanical varieties for hybrid vigor expression. Thus, 10 morphological and productive characteristics of 130 clones of Conilon and Robusta botanical varieties and their intervarietal hybrids were evaluated over 2 years. The experiment was conducted in a randomized block design with four replicates of four plants per plot. For selection of parents, the main component analysis was used to associate values with reference points obtained from the average of each botanical variety. The first two principal components allowed for the separation of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coffea canephora; Genetic divergence; Heterosis.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000400402

Potential of parents and hybrids experimental of the yellow melon
Provedor de dados: 65
Autores: Cavalcante Neto,José Galdino; Ferreira,Karmita Thainá Correia; Aragão,Fernando Antonio Souza de; Antônio,Rafaela Priscila; Nunes,Glauber Henrique de Sousa.
ABSTRACT: Melon or muskmelon (Cucumis melo L.) is of considerable economic importance in Brazil. Nearly all the cultivars currently grown are hybrids. Heterosis has been used to advantage in the melon plant, and the use of uniform hybrids is one of the reasons for successful cultivation. The aim of the present study was to evaluate the agronomic potential of yellow melon lines and hybrids. An experiment was conducted in randomized blocks with three replications to evaluate 24 hybrids generated by crosses among three elite lines used as female parents (AF-01, AF-02, and AF-03) and eight lines used as male parents (LAM-01, LAM-02, LAM-03, LAM-04, LAM-05, LAM-06, LAM-07, and LAM-08). Yield and fruit quality traits were evaluated. Partial diallel analysis was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cucumis melo L.; Combining ability; Heterosis; Diallel.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782020000200204