Genetic potential of common bean parents for plant architecture improvement

Silva, Vanessa Maria Pereira e; Carneiro, Pedro Crescêncio Souza; Júnior, José Ângelo Nogueira de Menezes; Carneiro, Vinícius Quintão; Carneiro, José Eustáquio de Souza; Cruz, Cosme Damião; Borém, Aluízio

doi:10.1590/s0103-90162013000300005

Cited by 27 publications

(37 citation statements)

References 20 publications

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“…We observed a predominance of estimates of additive variance related to dominance for the 3 populations in the 2 seasons (Table 4). Baldissera et al (2012) and Silva et al (2013b) also observed a predominance of additive effects in HD genetic control. Heritability estimates of family means ranged from 55 to 76% for the 3 populations over the 2 seasons (Table 4).…”

Section: Resultsmentioning

confidence: 88%

“…Two hypotheses explain these results: i) reduced sample size of F 2:3 progenies and ii) high environmental influence in the expression of HD and PAG. High estimates of phenotypic correlation between HD and PAG using common bean lines were also observed by Silva et al (2013b) and Moura et al (2013). To discriminate the 32 F 2:3 families from each population with 80% accuracy (R 2 = 0.80), it was necessary to evaluate the HD of at least 39 plants in each plot (Table 6).…”

Section: Resultsmentioning

confidence: 99%

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Potential of hypocotyl diameter in family selection aiming at plant architecture improvement of common bean

et al. 2015

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ABSTRACT. Cultivars of common bean with more erect plant architecture and greater tolerance to degree of lodging are required by producers. Thus, to evaluate the potential of hypocotyl diameter (HD) in family selection for plant architecture improvement of common bean, the HDs of 32 F 2 plants were measured in 3 distinct populations, and the characteristics related to plant architecture were analyzed in their progenies. Ninety-six F 2:3 families and 4 controls were evaluated in a randomized block design, with 3 replications, analyzing plant architecture grade, HD, and grain yield during the winter 2010 and drought 2011 seasons. We found that the correlation between the HD of F 2 plants and traits related to plant architecture of F 2:3 progenies were of low magnitude compared to the estimates for correlations considering the parents, indicating a high environmental influence on HD in bean plants. There was a predominance of additive genetic effects on the determination of hypocotyl diameter, which showed higher precision and accuracy compared to plant architecture grade. Thus, this characteristic can be used to select progenies in plant architecture improvement of common beans; however, selection must be based on the means of at least 39 plants in the plot, according to the results of repeatability analysis.

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Section: Resultsmentioning

confidence: 88%

Section: Resultsmentioning

confidence: 99%

Potential of hypocotyl diameter in family selection aiming at plant architecture improvement of common bean

et al. 2015

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“…In contrast, when there is interest in using a specific parent to create hybrids, SCA estimates are useful to select the best parental combination (Silva et al, 2013). If, for example, there is a particular interest in Q4205, a cross with Bagual is recommended, since the resulting hybrids showed the highest SCA.…”

Section: Resultsmentioning

confidence: 99%

Intraspecific tetraploid hybrids of Paspalum notatum: agronomic evaluation of segregating progeny

Weiler

Dall'Agnol

Simioni

et al. 2018

Sci. agric. (Piracicaba, Braz.)

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For many decades, animal production in southern Brazil has been based on native forage grasses. Paspalum notatum Flügge (bahiagrass) is one of the most frequently used native grass in southern Brazil. The native germplasm of P. notatum is tetraploid and displays apomictic reproduction; hence, chromosome doubling of sexual diploid accessions is required to facilitate hybridization. The main goal of this study was to evaluate forage production and other agronomical evaluation of P. notatum intraspecific hybrids in order to obtain new varieties that could be registered and/or protected and launched as new cultivars in the future. Three tetraploid sexual genotypes were crossed with the ecotypes Bagual and André da Rocha. Biomass production (leaf, stem, and inflorescence fractions), plant growth habit, plant height, number of tillers, and frost damage were evaluated in the resulting hybrids. The general combining ability (GCA) and specific combining ability (SCA) were calculated for the six families generated. We evaluated 196 hybrids and the most productive yielded 42 % more total dry mass than the most productive parent (ecotype Bagual), and Bagual production was seven-fold higher than that of cultivar 'Pensacola'. The highest GCA values were observed for Bagual and Q4205. No correlation was observed between leaf coloration and the frost effect or regrowth in the following winter.Similarly, no correlation between plant growth habit and dry mass production was observed. The reproduction mode of the most productive hybrids are currently being analyzed in larger plots to identify apomictic and sexual genotypes for future registration and protection.

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“…Neste contexto, os cruzamentos dialélicos se destacam na seleção de genitores e, em particular, os dialelos parciais, quando o objetivo é reunir fenótipos favoráveis que se encontram em grupos distintos de genitores, pois, nesse caso, não são de interesse as combinações dentro de cada grupo. Os dialelos parciais têm sido utilizados em diversas culturas, como trigo (Pimentel et al, 2013), tomate (Pádua et al, 2010) e feijão (Silva et al, 2013).…”

Section: Introductionunclassified

Escolha de genitores quanto à precocidade e produtividade de feijão tipo carioca

Vale

Barili

Oliveira

et al. 2015

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi avaliar linhagens de feijoeiro promissoras para a seleção de genitores com características de feijão tipo carioca, precoces e de alto potencial produtivo. Avaliaram-se 35 linhagens de feijoeiro, em delineamento de blocos ao acaso com três repetições. Quatro destas linhagens -Goiano Precoce, XAN112, Carioca1070 e Rosinha Precoce -foram selecionadas para compor o grupo 1 do dialelo parcial 4×5, e três -RP1, VC15 e VC33, de ciclo normal, grãos tipo carioca e elevado potencial produtivo -foram utilizadas para compor o grupo 2 do dialelo, juntamente com as cultivares BRSMG Madrepérola e BRS Estilo. Obtiveram-se 20 híbridos que, com seus genitores, foram avaliados na safra da seca de 2013, em Coimbra e Viçosa, MG, em delineamento de blocos ao acaso, com três repetições. A linhagem Goiano Precoce destacouse quanto à precocidade, com valores de capacidade geral de combinação (CGC) negativos e significativos em Viçosa (-3,15) e Coimbra (-3,44). A linhagem RP1 destacou-se quanto ao rendimento de grãos, com valores positivos e significativos de CGC em Viçosa (115) e Coimbra (260). Com base na CGC, a linhagem Goiano Precoce é promissora para utilização como genitora quanto à precocidade, e a RP1, quanto ao aumento no rendimento de grãos.Termos para indexação: Phaseolus vulgaris, análise dialélica, dialelo parcial. Choice of parents for earliness and yield of carioca-type beanAbstract -The objective of this work was to evaluate promising bean lines for the selection of parents, with carioca grain-type traits, early, and with high productive potential. Thirty-five common bean lines were evaluated in a randomized complete block design with three replicates. Four of these lines -Goiano Precoce, XAN112, Carioca1070, and Rosinha Precoce -were used to compose the group 1 of a 4×5 partial diallel, and three -RP1, VC15 e VC33, of normal cycle and carioca grain type with high yield potential -were used to compose the group 2 of the diallel, together with the cultivars BRSMG Mandrepérola and BRS Estilo. Twenty hybrids were obtained, which were evaluated with their parents in the dry season of 2013, in Coimbra and Viçosa, in the state of Minas Gerais, Brazil, in a randomized complete block design with three replicates. Goiano Precoce line stood out for earliness with negative and significant values of general combining ability (GCA), in Viçosa (-3.15) and Coimbra (-3.44). RP1 line stood out for grain yield with positive and significant GCA values, in Viçosa (115) and Coimbra (260). Based on the GCA, Goiano Precoce is a promising line to be used as a parent for earliness, and RP1 for grain yield increase.

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Genetic potential of common bean parents for plant architecture improvement

Cited by 27 publications

References 20 publications

Potential of hypocotyl diameter in family selection aiming at plant architecture improvement of common bean

Potential of hypocotyl diameter in family selection aiming at plant architecture improvement of common bean

Intraspecific tetraploid hybrids of Paspalum notatum: agronomic evaluation of segregating progeny

Escolha de genitores quanto à precocidade e produtividade de feijão tipo carioca

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