...
首页> 外文期刊>Ciência Rural >Reaction of common bean progenies to white mold derived from recurrent selection
【24h】

Reaction of common bean progenies to white mold derived from recurrent selection

机译:反复选择产生的普通豆子代对白霉病的反应

获取原文
           

摘要

This study was realized with the objective of verifying the resistance to white mold of common bean progenies derived from recurrent selection for resistance to angular leaf spot. The plant material used was obtained from a program of recurrent selection, which was started by crossing seven lines with carioca grain type with ten sources of resistance to angular leaf spot according to the partial diallel scheme. To evaluate the resistance to white mold, it was verified the reaction of 17 parents plus 35 selected progenies, to oxalic acid. Huge heterogeneity among the parents was observed, showing that some of them have resistance alleles to white mold, and thus, there is a possibility of recombine these alleles through the recurrent selection and obtaining progenies with high levels of resistance. Even in initial cycles, some progenies exhibited resistance to white mold similar to the one of cultivar 'G-122', which presents good level of resistance to this disease. This leads to infer that the original population already had some level of physiological resistance for the reaction to absorption of oxalic acid, and also for resistance to angular leaf spot. Thus, among the selected progenies for resistance to angular leaf spot, grain type and high yield, at least four progenies have resistance to white mold similar to the source of resistance 'G-122'.
机译:这项研究的目的是验证通过反复选择对角叶斑病抗性而获得的普通豆子代对白霉病的抗性。所使用的植物材料是从轮回选择程序中获得的,该程序通过按照部分透析方案将七种带有木薯颗粒类型的品系与十种对角叶斑病的抗性来源杂交而开始。为了评估对白色霉菌的抗性,已验证了17个亲本加上35个选定的后代对草酸的反应。在亲本中观察到巨大的异质性,表明它们中的一些具有对白色霉菌的抗性等位基因,因此,有可能通过反复选择并获得具有高水平抗性的后代来重组这些等位基因。即使在最初的周期中,一些后代也表现出对白色霉菌的抗性,类似于品种“ G-122”,对这种疾病表现出良好的抗性水平。这导致推断原始种群对于草酸的吸收反应以及对角叶斑的抵抗力已经具有一定程度的生理抗性。因此,在所选择的对角叶斑病,谷物类型和高产量的抗性后代中,至少四个后代具有对白色霉菌的抗性,类似于抗性源“ G-122”。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号