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Registros recuperados: 39
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Algunos aspectos genéticos y bioquímicos de las atocianinas en poblaciones criollas de maíz de granos pigmentados Colegio de Postgraduados
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
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Algunos aspectos genéticos y bioquímicos de las atocianinas en poblaciones criollas de maíz de granos pigmentados Colegio de Postgraduados
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
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Algunos aspectos genéticos y bioquímicos de las atocianinas en poblaciones criollas de maíz de granos pigmentados Colegio de Postgraduados
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
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Análisis dialélico para rendimiento en líneas de maíz con alta calidad de proteína. Colegio de Postgraduados
Andrés Meza, Pablo.
Durante el ciclo agrícola primavera-verano 2008, se establecieron en el Campo Experimental Cotaxtla, Veracruz, México, dos ensayos, 1) evaluación y selección de líneas con base en su comportamiento per se y 2) evaluación y selección de cruzas dialélicas, con base en su aptitud combinatoria general (ACG), aptitud combinatoria específica (ACE) y heterosis. El diseño fue un alfa látice 4x8 y 16x8 con dos repeticiones. Los resultados muestran un grupo de líneas con alta calidad de proteína, con buen comportamiento per se, como: (VS-536xV-537C)VS-536RC2-1-1-959 (VS-536), (VS-536xV-537C)VS-536RC2-1-1-960 (VS-536), (VS-536xV-537C)VS-536RC2-1-1-952 (VS-536-) y (VS-536xV-537C)VS-536RC2-1-1-953 (VS-536), similares a las líneas de referencia LT-155-289 y LT-157-291...
Palavras-chave: Zea mays L.; Selección per se; Cruzas; Aptitud combinatoria; Proteína; Selection per se; Cross; Combining ability; Protein; Maestría; Agroecosistemas Tropicales.
Ano: 2010 URL: http://hdl.handle.net/10521/207
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Análisis dialélico para rendimiento en líneas de maíz con alta calidad de proteína. Colegio de Postgraduados
Andrés Meza, Pablo.
Durante el ciclo agrícola primavera-verano 2008, se establecieron en el Campo Experimental Cotaxtla, Veracruz, México, dos ensayos, 1) evaluación y selección de líneas con base en su comportamiento per se y 2) evaluación y selección de cruzas dialélicas, con base en su aptitud combinatoria general (ACG), aptitud combinatoria específica (ACE) y heterosis. El diseño fue un alfa látice 4x8 y 16x8 con dos repeticiones. Los resultados muestran un grupo de líneas con alta calidad de proteína, con buen comportamiento per se, como: (VS-536xV-537C)VS-536RC2-1-1-959 (VS-536), (VS-536xV-537C)VS-536RC2-1-1-960 (VS-536), (VS-536xV-537C)VS-536RC2-1-1-952 (VS-536-) y (VS-536xV-537C)VS-536RC2-1-1-953 (VS-536), similares a las líneas de referencia LT-155-289 y LT-157-291...
Palavras-chave: Zea mays L.; Selección per se; Cruzas; Aptitud combinatoria; Proteína; Selection per se; Cross; Combining ability; Protein; Maestría; Agroecosistemas Tropicales.
Ano: 2010 URL: http://hdl.handle.net/10521/207
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Analysis of general and specific combining abilities of popcorn populations, including selfed parents Genet. Mol. Biol.
Viana,José Marcelo Soriano; Matta,Frederico de Pina.
Estimation of general and specific combining ability effects in a diallel analysis of cross-pollinating populations, including the selfed parents, is presented in this work. The restrictions considered satisfy the parametric values of the GCA and SCA effects. The method is extended to self-pollinating populations (suitable for other species, without the selfed parents). The analysis of changes in population means due to inbreeding (sensitivity to inbreeding) also permits to assess the predominant direction of dominance deviations and the relative genetic variability in each parent population. The methodology was used to select popcorn populations for intra- and inter-population breeding programs and for hybrid production, developed at the Federal...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Diallele cross; Combining ability; Inbreeding depression; Popcorn breeding.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572003000400010
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Caracterización agronómica y aptitud combinatoria de poblaciones de maíz del sureste del Estado de México. Colegio de Postgraduados
Arce Ramírez, Aurelio Chico.
El propósito de esta investigación fue contribuir a la detección de materiales genéticos adecuados de partida para el mejoramiento genético de maíz (Zea mays L) de grano blanco y blanco cremoso para el Sureste del Estado de México, así como definir el método de mejoramiento genético a seguir en las mismas. Para ello, se realizaron dos estudios; en el primero se evaluó el peso seco de grano por planta (PSG/PP), componentes del rendimiento, y características agronómicas de 110 materiales genéticos, mientras que en el segundo se estimaron los efectos de aptitud combinatoria general (gi) (ACG) y específica (sij)(ACE) del PSG/PP de 10 poblaciones sobresalientes y de sus 45 cruzas simples posibles, respectivamente, mediante el Método 2 de Griffing. En ambos...
Palavras-chave: Zea mays L.; Aptitud combinatoria; Cruzas dialélicas; Poblaciones nativas; Premejoramiento; Rendimiento; Combining ability; Diallel crosses; Native populations; Yield; Genética; Maestría.
Ano: 2013 URL: http://hdl.handle.net/10521/2038
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Combining ability analysis for grain filling duration and yield traits in spring wheat (Triticum aestivum L. em. Thell.) Genet. Mol. Biol.
Kamaluddin,; Singh,Rishi M.; Prasad,Lal C.; Abdin,Malik Z.; Joshi,Arun K..
A diallel analysis of wheat (Triticum aestivum L. em. Thell) parents (n = 11) and their F1 (n = 55) and F2 (n = 55) offspring was carried out for the following four traits: grain filling duration (GFD), GFD for growing degree days (GDD), 1000 seed weight and seed yield per plant. Analysis of variance for general combining ability (GCA) and specific combining ability (SCA) displayed significant F1 and F2 general and specific combining ability effects for the four traits studied. For all the traits the GCA effects were relatively more important than the SCA effects, indicating that additive genetic effects were predominant. Crosses displaying high SCA effects for grain filling duration, seed weight and yield were observed to be derived from parents having...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Wheat; Combining ability; GCA; SCA; Grain filling duration.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000300018
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Combining ability analysis to identify suitable parents for heterotic rice hybrid breeding International Rice Research Institute
Singh, N. K.; Kumar, A..
p.21-22
Palavras-chave: Breeding; Hybrid rice; Heterosis; Combining ability; Cytoplasmic male sterility; Analysis of variance.
Ano: 2004 URL: http://hdl.handle.net/123456789/708
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Combining ability from diallel cross of 14 inbred line GASORN popcorn Thai Agricultural
Pigoonthong Chueadoongpui; Kitti Boonyalesnirun; Tavat Lavapauraya.
Palavras-chave: Corn; Maize; Popcorn; Inbred line; Diallel cross; Combining ability; GASORN popcorn; ข้าวโพด; ข้าวโพดคั่ว; การผสมพันธุ์แบบพบกันหมด; สายพันธุ์แท้; สมรรถนะการผสมพันธุ์.
Ano: 1990 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4279
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Combining ability of flint corn inbred lines: Mal de Río Cuarto disease tolerance and grain yield Phyton
Borghi,ML; Ibañez,MA; Bonamico,NC; Kandus,MV; Almorza Gomar,D; Guillin,EA; Salerno,JC; Di Renzo,MA.
Mal de Río Cuarto (MRC) disease is a significant threat to corn production in Argentina. Sixty six hybrid combinations derived from the cross of twelve flint maize (Zea mays L) inbred lines were evaluated using a completely randomized block design with two replications. MRC disease severity grade (SG) and grain yield (GY) were the analyzed traits. Our objectives were to estimate the general (GCA) and specific (SCA) combining abilities for these traits among twelve corn inbred lines, and to identify potential heterotic relationships among them. Diallel crosses were performed and these results were compared using Griffing's method 2 model I and diallel GGE biplot (genotype main effect plus genotype x environment interaction). Highly significant effects for...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Zea mays L; Diallel crosses; GGE biplot; Combining ability.
Ano: 2012 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572012000100017
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Combining ability of maize inbred lines evaluated in three environments in Brazil Scientia Agricola
Nass,Luciano Lourenço; Lima,Marlene; Vencovsky,Roland; Gallo,Paulo Boller.
For tropical areas like Brazil, genotype x environment interaction is an important source of variation. Our objectives were to examine the combining abilities and their interaction with environments in ten selected maize (Zea mays L.) inbred lines in diallel crosses and to identify candidates for promising hybrid combinations. Crosses and checks were evaluated through a 7 x 7 triple lattice design at three locations during the 1984/85 season. Several agronomic traits were evaluated, but here only data on ear yield are discussed. Yield data were adjusted for stand variation (correction to 50 plants per plot) and grain moisture (15.5%). Data for ear yield were analysed using an adaptation of Griffing’s method IV for complete diallel crosses, and experiments...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Diallel analysis; Combining ability; Genotype x environment interaction.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162000000100021
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Diallel among soybean genotypes with high oil content and resistance to sudden death syndrome BABT
Oliveira,Inocencio Junior de; Vello,Natal Antonio; Vieira,Paulo de Melo Jorge; Wyminersky,Philip Traldi.
The objective of this work was to use a partial diallel to evaluate the combining ability of 14 soybean genotypes and recommend superior combinations. Seven of the genotypes had high oil yield; other seven exhibited tolerance to sudden death syndrome and they generated 49 hybrids in a diallel cross without reciprocals. F2plants of each cross and the parents were evaluated for the following traits: number of days to maturity (NDM), oil content in the seeds (OC), grain yield (GY) and oil yield (OY). The results indicated the existence of genetic variability in the parents and progeny for all the traits. The rank of the parents based on the means was similar to the rank based on general combining ability (GCA) for all the traits. The specific combining...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Glycine max; Combining ability; Oil yield; Tolerance.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132014000200004
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Diallel analysis and inbreeding depression in agronomic and technological traits of cotton genotypes Bragantia
Carvalho,Luiz Paulo de; Teodoro,Paulo Eduardo; Rodrigues,Josiane Isabela da Silva; Farias,Francisco José Correia; Bhering,Leonardo Lopes.
ABSTRACT Cotton provides about 90% of the world textile fiber, and is one of the crops of greater industrial relevance. The objectives of this study were to estimate the inbreeding depressionand the genetic effects involved in the control of the agronomic andfiber quality traits in F1 and F2 generations and to identify promising hybrids for obtaining superior cotton genotypes. Two cultivars of upland cotton and two moco (Brazilian endemic) cotton were crossed using a half-diallel scheme. The following traits were evaluated: percentage of fibers and weight of one boll, fiber length, fiber uniformity, short fiber index, fiber strength, and micronaire index. The additive genetic effects are predominant in the evaluated agronomic and fiber quality traits....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Gossypium hirsutum L. r. latifolium Hutch; Gossypium hirsutum L. r. marie galante Hutch; Combining ability; Parents selection.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052018000400527
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Diallel analysis for frogeye leaf spot resistance in soybean PAB
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
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Diallel analysis of fruit set in Hevea brasiliensis Muell. Arg. Genet. Mol. Biol.
Omokhafe,Kenneth O.; Akpobome,Frederick A.; Nasiru,Ibrahim.
The clonal and inter-clonal combining ability of fruit set in a Hevea brasiliensis four-parent diallel mating was evaluated using a randomized complete block experimental design with three replicates. Twelve main and reciprocal crosses were hand pollinated and percentage fruit set was recorded. The raw data were subjected to an arc-sine transformation for analysis of variance, and general and specific combining ability. There was significant variation of each of fruit set for the various crosses, general combining ability and reciprocal effect. The breeding implications of these results are also discussed.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fruit set; Hevea; Combining ability.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000300021
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Diallel cross among fresh market tomato inbreeding lines Horticultura Brasileira
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
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Estimation of genetic merit of diallel hybrids of sweet pepper by mixed models Ciência Rural
Chagas,José Tiago Barroso; Santos,Paulo Ricardo dos; Daher,Rogério; Stida,Wanessa Francesconi; Vidal,Ana Kesia; Nascimento,Maxwel Rodrigues; Costa,Kleyton Danilo da Silva; Vivas,Marcelo; Amaral Júnior,Antônio Teixeira do; Menezes,Dimas.
ABSTRACT: The use of mixed models for evaluating diallel crosses is a highly timely option to the reliable prediction of progeny genetic values. In the sweet pepper crop, hybrids are commercially explored on a large scale, mainly because of their characteristics of economic importance. This study aimed to assess the potential of hybrids obtained from a partial diallel among five sweet pepper lines developed for the hydroponic cultivation system and two simple hybrids, by applying mixed models. It was performed crosses in the partial diallel scheme among the (L1B, L6, L7, L18, and L19) lines and the simple hybrids ‘Valdor’ and ‘Atlantis’. Plants were cultivated in hydroponic system with substrate and irrigated three times a day using nutrient solution. On...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Capsicum annuum; Combining ability; Hydroponic cultivation; REML/BLUP.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000800402
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Evaluación de dos generaciones de híbridos y progenitores de sorgo tolerante al frío Colegio de Postgraduados
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
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Evaluación de dos generaciones de híbridos y progenitores de sorgo tolerante al frío Colegio de Postgraduados
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
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