Genetic gain in the breeding program of common beans at IAC from 1989 to 2007

被引：23

作者：

Chiorato, Alisson Fernando ^{[1
]}

Morais Carbonell, Sergio Augusto ^{[1
]}

Vencovsky, Roland ^{[2
]}

Fonseca Junior, Nelson da Silva ^{[3
]}

Pinheiro, Jose Baldin ^{[2
]}

机构：

[1] Ctr Graos & Fibras, Inst Agron, BR-13020902 Campinas, SP, Brazil

[2] Escola Super Agr Luis Dequeiroz, Dept Genet, BR-13400970 Piracicaba, SP, Brazil

[3] Inst Agron Parana, BR-86001970 Londrina, PR, Brazil

来源：

CROP BREEDING AND APPLIED BIOTECHNOLOGY | 2010年 / 10卷 / 04期

关键词：

Phaseolus vulgaris; selection; assays; adjusted means; YIELD; IMPROVEMENT;

D O I：

10.1590/S1984-70332010000400007

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

The goal of the present work was to evaluate the genetic gain obtained in grain yield for the common bean genotypes from 1989 unlit 2007, at the Instituto Agronomic de Campinas, in the state of Sao Paulo. Genetic gain has been separated into two research periods: the first, from 1989 to 1996, and the second, from 1997 to 2007. In the first period, a genetic gain of 1.07 % per year was obtained, whereas for the second period, the gain was zero. However the mean yield of the evaluated lines was approximately 1000 kg ha(-1) superior to the figures obtained in the first period. The main cause for the absence of genetic gain in the second period is that the focus of the breeding program was changed to grain quality. The individualized analysis of the genotypes with carioca grains in the second period indicated the lack of genetic gain during the investigated period.

引用

页码：329 / 336

页数：8

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