Affiliation:
1. Universidade Federal de Viçosa, Brazil
2. Empresa Brasileira de Pesquisa Agropecuária, Brazil
3. Universidade Federal do Ceará, Brazil
Abstract
Abstract The objective of this study was to estimate the genetic gain of two recurrent selection cycles in common bean breeding and identify families with the potential to generate superior lines. The base population, cycle zero (C0), was obtained by combining 20 carioca bean parents, populations with favorable phenotypes for several agronomically important traits. The parents were recombined in a circulant diallel scheme, in which each parent participated in two crosses, generating 20 populations. From these populations, families were derived and evaluated for three seasons in the generations F2:3, F2:4 and F2:5. The same procedures of recombination and evaluation in C0 were performed in cycle one (CI). The genetic gain for yield, estimated from the simultaneous evaluation of the 40 best families of each cycle, was 8.6%. Families with potential to generate superior lines to cultivar Pérola were identified, especially among the CI families.
Reference20 articles.
1. Eight cycles of recurrent selection for resistance to angular leaf spot in common bean;Arantes LO;Crop Breeding and Applied Biotechnology,2010
2. Breeding potential of single, double and multiple crosses in common bean;Carneiro JES;Crop Breeding and Applied Biotechnology,2002
3. Associação entre o porte da planta do feijoeiro e o tamanho dos grãos;Collicchio E;Pesquisa Agropecuária Brasileira,1997
4. Melhoramento do feijoeiro comum com grão tipo carioca, visando resistência à antracnose e à mancha-angular;Couto MA;Ciência e Agrotecnologia,2008
5. GENES - a software package for analysis in experimental statistics and quantitative genetics;Cruz CD;Acta Scientiarum,2013
Cited by
9 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献