Recurrent selection for high iron and zinc concentrations in black bean grain

IF 1.2 4区 农林科学 Q2 AGRICULTURE, MULTIDISCIPLINARY
Lara Rodrigues de Queiroz, L. L. Rodrigues, Saulo Muniz Martins, T. Souza, L. C. Melo, H. S. Pereira
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引用次数: 1

Abstract

The iron concentration (FeC) and zinc concentration (ZnC) in common bean grain are quantitative traits, and appropriate breeding techniques are required to achieve genetic gain. The aim of this study was to obtain a recurrent selection population of black bean to increase the FeC and ZnC in the grain and to select the superior progenies for formation of the next cycle and obtain lines. The base population was formed by crosses among ten parents. A total of 351 progenies were obtained, and, after two generations of selection, the 27 best progenies were evaluated in two field trials for FeC, ZnC, 100 seed weight and yield. Analyses of variance were carried out and genetic parameters were estimated. The heritability estimates ranged from 59 to 94% for the four traits. The estimates of expected gain from direct selection for each trait (3 to 21%) and simultaneous selection (1 to 4%) indicate success from selection. The eight progenies, selected based on simultaneous selection, have superior mean values, including to those of ‘BRS Supremo’ (10% for FeC, 8% for ZnC, 5% for 100 seed weight and 3.8% for yield), the Brazilian black bean cultivar with the highest FeC and ZnC. The recurrent selection population shows high genetic variability and potential for obtaining lines superior to the cultivars currently on the market, allying high agronomic performance and high FeC and ZnC in the grain. Furthermore, this population shows potential for generating a new recurrent selection cycle, from recombination of the eight superior progenies.
黑豆籽粒高铁、高锌的循环选择
普通豆籽粒铁浓度(FeC)和锌浓度(ZnC)是数量性状,需要适当的育种技术来实现遗传增益。本研究的目的是获得一个循环选择的黑豆群体,以提高籽粒中的FeC和ZnC,并选择优良的后代形成下一个循环和获得品系。基础种群是由十个亲本杂交形成的。共获得351个子代,经过2代筛选,对27个最佳子代进行了FeC、ZnC、百粒重和产量的田间评价。进行方差分析和遗传参数估计。这四种性状的遗传率估计在59%到94%之间。对每个性状的直接选择(3 - 21%)和同时选择(1 - 4%)的预期增益的估计表明选择成功。同时选择的8个子代均具有较好的平均值,其中FeC和ZnC最高的巴西黑豆品种“BRS Supremo”的平均值最高(FeC为10%,ZnC为8%,百粒重为5%,产量为3.8%)。循环选择群体表现出较高的遗传变异性和获得优于市场上现有品种的品系的潜力,同时具有较高的农艺性能和籽粒中较高的FeC和ZnC。此外,该种群显示出产生一个新的循环选择周期的潜力,从重组的八个优良后代。
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来源期刊
Bragantia
Bragantia AGRICULTURE, MULTIDISCIPLINARY-
CiteScore
2.40
自引率
8.30%
发文量
33
审稿时长
4 weeks
期刊介绍: Bragantia é uma revista de ciências agronômicas editada pelo Instituto Agronômico da Agência Paulista de Tecnologia dos Agronegócios, da Secretaria de Agricultura e Abastecimento do Estado de São Paulo, com o objetivo de publicar trabalhos científicos originais que contribuam para o desenvolvimento das ciências agronômicas. A revista é publicada desde 1941, tornando-se semestral em 1984, quadrimestral em 2001 e trimestral em 2005. É filiada à Associação Brasileira de Editores Científicos (ABEC).
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