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| Registros recuperados: 789 | |
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| Cardona,Christian Camilo Castañeda; Coronado,Yacenia Morillo; Conronado,Ana Cruz Morillo; Ochoa,Iván. |
| ABSTRACT The oil palm (Elaeis guineensis Jacq) plays an important role in the economy of some tropical countries; Colombia ranks first for production in Latin America and fifth in the world. The aim of this research was to characterize the genetic variability of 51 oil palm genotypes from the Congo with seven randomly amplified microsatellite markers RAM. As a result, 241 alleles were generated andthe number of polymorphic loci ranged from 46 to 14 for the ACA and CGA primers, respectively. High genetic diversity was found, with a total heterozygosity of 0.64, along with a high percentage of polymorphic loci, 89%. The coefficient of genetic differentiation (Fst) was 0.15, indicating that there was moderate genetic differentiation. The genetic diversity... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Breeding; Genetic markers; Germplasm; Genetic structure. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052018000400546 |
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| Santos,Valquíria Oliveira dos; Viana,Alexandre Pio; Preisigke,Sandra da Costa; Santos,Eileen Azevedo. |
| ABSTRACT The present study aims to characterize the genetic diversity of Passiflora setacea, P. edulis, their hybrids, and first-backcross progenies, and to indicate promising recombinants for generation advancement in a breeding program for transferring resistance to cowpea aphid-borne mosaic virus (CABMV). Ninety-one genotypes were evaluated for 37 morphoagronomic descriptors. The traits were analyzed to obtain a distance matrix, based on the Gower algorithm, using the Ward-Modified Location Model (MLM) procedure for the composition of genetic groups. The adopted strategy led to the formation of five homogeneous groups, where groups I, III, and V comprised the parents P. setacea, P. edulis and interspecific hybrids, respectively, while groups II and IV... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Breeding; Sour passionfruit; Ward-mlm; Cabmv; Morphoagronomic characterization. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052019000400542 |
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| Sevik,Mehmet Ali; Deligoz,Ilyas. |
| ABSTRACT Cucumber mosaic virus (CMV) is one of the most economically damaging viral pathogens affecting vegetable crops around the world. In the present research, 50 cabbage (Brassica oleracea L.) lines chosen from the Black Sea Agricultural Research Institute (BSARI, Turkey) were evaluated for their reaction to CMV. The level of resistance to CMV was determined based on biological assays, symptom expression, disease severity rating, and viral titer, as determined by ELISA. Eight cabbage lines were identified as moderately susceptible and 3 were susceptible to the CMV-BA isolate. These plants exhibited various symptoms and accumulated high levels of virus titer. However, the results showed that 17 lines had high resistance, 12 were found to be resistant... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brassica oleracea; Breeding; CMV; Reaction. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000100086 |
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| Sera,Gustavo Hiroshi; Sera,Tumoru; Ito,Dhalton Shiguer; Ribeiro Filho,Claudionor; Villacorta,Amador; Kanayama,Fabio Seidi; Alegre,Clayton Ribeiro; Del Grossi,Leandro. |
| The aim of this study was to evaluate the coffee germplasm of the Paraná Agronomic Institute (IAPAR) for resistance to the coffee-berry-borer. Preliminary field evaluation was performed in August 2004 and the fruits of less damaged genotypes in the field were evaluated under controlled condition with obligated and free choice experiments established in a randomized complete design with three replications. The genotypes were evaluated fifteen days after infestation with one borer per fruit in Petri dishes. The data were analyzed by the Scott-Knott means test at 1 % and by the χ2 test. Statistical analysis indicated that Coffea kapakata, Psilanthus bengalensis, C. eugenioides and genotypes with C. eugenioides genes were resistant. These genotypes presented... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Breeding; Coffea; Cultivars; Hypothenemus hampei; Psilanthus. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000200003 |
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| Sera,Gustavo Hiroshi; Sera,Tumoru; Ito,Dhalton Shiguer; Azevedo,José Alves de; Mata,João Siqueira da; Doi,Deisy Saori; Ribeiro Filho,Claudionor. |
| The aim of this study was to identify plants of the IAPAR-59 and Tupi IAC 1669-33 coffee cultivars with less defeated resistance genes by the rust races present at IAPAR (Londrina, Paraná State, Brazil) using test-crosses. Eighteen test-crosses derived from hybridizations between 'IAPAR-59' or 'Tupi IAC 1669-33' with susceptible coffee to the rust disease were evaluated. Six hybrids were used as susceptible standards originated from hybridizations between two susceptible coffee plants. Many parental plants of the 'IAPAR-59' and 'Tupi IAC 1669-33' presented more defeated resistance genes against rust races present at IAPAR than others of these cultivars or the genes were in heterozygous, because of segregant susceptible plants observed in some test-crosses.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hemileia vastatrix; Breeding; Coffee crop; Rust races; SH genes. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000400001 |
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| Pandini,Fábio; Vello,Natal Antonio; Lopes,Ângela Celis de Almeida. |
| The objective of this research was to quantify heterosis of agronomic traits and evaluate direct and indirect correlations among seed yield and other traits. A diallel involving six parents was grown in two localities. Seed yield (PG), one-hundred seed weight (PCS), number of pods per plant (NV), weight of aerial part of the plant (PPA), harvest index (IC) and number of seeds per pod (NGV) were evaluated. Positive values of heterosis were detected for all traits. Estimates of heterosis components were significative for most traits, showing effects of aditivity and dominance. The specific heterosis was more important than the variety heterosis, mainly in the locality Anhembi. MTBR-95-123800 presented the best potential per se and as parent in crosses, but... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Breeding; Indirect selection; Correlations among traits; Path analysis; Glycine max. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132002000600001 |
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| Del Grossi,Leandro; Sera,Tumoru; Sera,Gustavo Hiroshi; Fonseca,Inês Cristina de Batista; Ito,Dhalton Shiguer; Shigueoka,Luciana Harumi; Andreazi,Elder; Carvalho,Filipe Gimenez. |
| The objective of the study was to evaluate the resistance to rust in coffee cultivars developed by research institutes of Brazil in Paraná state. Resistance to the local leaf rust races was assessed in high disease intensity field conditions at Londrina and Congonhinhas in 2009 and 2010.The cultivars were developed by the EPAMIG/UFV, IAPAR, IAC and MAPA/Procafé. The resistant standard 'IAPAR 59' and the susceptible standards Catuaí Vermelho IAC 144' and 'Bourbon Amarelo' were used. A randomized block design with three replications and plots with 10 plants was used. A scale from 1 to 5 based on the rust intensity was used to evaluate the resistance. The Catiguá MG 1, Catiguá MG 2, IAPAR 59, IPR 98, IPR 104, Palma II, Paraíso H-419-10-6-2-5-1, Paraíso... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Breeding; Coffea; Hemileia vastatrix; Híbrido de Timor; SH genes. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000100004 |
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| Macedo,Célia Maria Peixoto de; Lopes,José Carlos; Amaral,José Augusto Teixeira do; Fonseca,Aymbiré Francisco Almeida da; Amaral,José Francisco Teixeira do. |
| This work aimed to evaluate the Coffea arabica cultivars for aluminum toxicity tolerance, in modified Hoagland solution. A completely randomized design with five repetitions in a factorial 4 x 4 (cultivar x combinations of aluminum) was used. After 44 days of the sowing, were transferred ten seedlings each cultivar germinated in the absence of Al3+ to solution without Al3+, and ten for solution with Al3+; ten seedlings each cultivar germinated in presence of Al3+ to solution without Al3+, and ten for solution with Al3+. In the treatment with aluminum, the element was added to the nutritive solution in the concentration of 0.83 mmol L-1 as Al2(SO4)3.16H2O. The cultivars Catuaí Amarelo IAC 62 and Iapar 59 were tolerant to the aluminum; cultivar Oeiras... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coffea arabica; Aluminum toxicity; Vigor; Breeding. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132011000500005 |
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| Sera,Gustavo Hiroshi; Sera,Tumoru; Ito,Dhalton Shiguer; Azevedo,José Alves de; Mata,João Siqueira da; Dói,Deisy Saori; Ribeiro Filho,Claudionor; Kanayama,Fabio Seidi. |
| The aim of this work was to evaluate the resistance to rust in coffee carrying S H3 gene and other S H genes. Twenty one CIFCs coffee trees with several resistance genes S H were evaluated in field conditions. All the evaluated coffees carrying Sh3 gene presented resistance to the rust. It was possible that rust races with the virulence gene v3 in the Paraná State didnt exist. The S H3 gene in combination with genes S H5, S H6, S H7, S H8, S H9 and S H? would be very important to obtain cultivars with more durable resistance to the rust. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hemileia vastatrix; Cultivars; Breeding; Durable resistance; Coffee crop; Differential clones. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000500002 |
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| Etienne,Hervé; Dechamp,E; Barry-Etienne,D; Bertrand,Bernóit. |
| In coffee, bioreactors are the most promising way for scaling-up micropropagation processes, particularly somatic embryogenesis. The availability of an efficient somatic embryogenesis process would allow the rapid mass production of heterozygous materials such as selected Coffea canephora clones and F1 Arabica hybrid varieties. For the last fifteen years, bioreactors (mechanically or pneumatically agitated bioreactors, temporary immersion bioreactors) have mostly been used on coffee to optimize the mass regeneration of somatic embryos from embryogenic tissues. This review presents the main results, obtained with several bioreactor models, concerning the different steps of the micropropagation process : i) the multiplication of embryogenic tissues, ii) the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coffea; Breeding; Liquid medium; Mass propagation; Somatic embryogenesis; Temporary immersion. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202006000100005 |
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| Montaldo,Hugo H; Trejo,Carlos; Lizana,Carlos. |
| The objective of this study was to estimate genetic parameters for milk production and reproduction traits using phenotypic and pedigree information from the Dairy Overo Colorado breed from southern Chile. Single- and multi-trait mixed models were used to analyze the data. Analyses were performed using ASReml software. The heritability estimates for milk yield, fat yield, protein yield, fat content, protein content, age at first calving and calving interval were 0.29 ± 0.04, 0.34 ± 0.04, 0.30 ± 0.04, 0.56 ± 0.04, 0.56 ± 0.04, 0.01 ± 0.07 and 0.002 ± 0.02, respectively. The genetic correlations between yield traits were high and positive (≥ 0.81). The genetic correlations of milk yield with fat content (-0.32) and protein content (-0.34) were... |
| Tipo: Journal article |
Palavras-chave: Breeding; Chile; Correlation; Heritability; Local cattle breed. |
| Ano: 2017 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202017000100003 |
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| Kibar,Beyhan; Karaağaç,Onur; Kar,Hayati. |
| The present investigation was carried out to study the direction and magnitude of heterosis in twenty-four hybrids for yield contributing head traits in cabbage (Brassica oleracea var. capitata L.). A field experiment was conducted during the cabbage growing season of 2011-2012 at the Black Sea Agricultural Research Institute, Samsun, Turkey. Hybrids and parents were evaluated in a randomized block design with three replications. Measurements were performed for head weight, head diameter and head length to estimate mid parent and better parent heterosis in each hybrid. The direction and magnitude of mid parent and better parent heterosis among hybrids for all the head traits was found to be highly variable. The maximum and significant heterosis in... |
| Tipo: Journal article |
Palavras-chave: Cabbage; Hybrid vigor; Breeding; Head traits; Yield; Yield components. |
| Ano: 2015 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202015000200007 |
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| Fuhrmann,Elisiane; Vieira,Eduardo Alano; Fialho,Josefino de Freitas; Faleiro,Fábio Gelape; Malaquias,Juaci Vitoria; Carvalho,Luiz Joaquim Castelo Branco. |
| ABSTRACT: Sweet cassava breeding programs are focused on the development of bio fortified cultivars that combine significant amounts of carotenoids in their reserve roots with desirable agronomic. The objective of this research was to evaluate agronomic and biochemical traits in sweet cassava clones with roots that have pink pulp. The nine genotypes were evaluated in two seasons in a randomized block design with three replications. Among the evaluated clones, the following stood out: i) for the height of the first branch (390/08, 345/08 and the control IAC 576-70); ii) for plant height (390/08, 345/08 e 378/08); iii) for shoot weight without original steam cutting (390/08, 406/08, 378/08 e 341/08); iv) for the percentage of starch in roots (378/08,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Manihot esculenta Crantz; Breeding; Genetic resources; Lycopene.. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782020000100201 |
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| Registros recuperados: 789 | |
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