Genetic analysis of yield component traits in cowpea [Vigna unguiculata (L.) Walp.]

被引：3

作者：

dos Santos, Samiria Pinheiro ^{[1
]}

Araujo, Mauricio dos Santos ^{[1
]}

Lelis de Aragao, Walter Frazao ^{[2
]}

Damasceno-Silva, Kaesel Jackson

Rocha, Maurisrael de Moura ^{[3
]}

机构：

[1] Univ Fed Visosa, Ave PH Rolfs S-N,Campus Univ, BR-36570900 Visosa, MG, Brazil

[2] Univ Fed Piaui, Minist Petronio Portella, Campus Univ, BR-64049550 Teresina, PI, Brazil

[3] Embrapa Meio Norte, Ave Duque Caxias 5650, BR-64008780 Teresina, PI, Brazil

来源：

CROP BREEDING AND APPLIED BIOTECHNOLOGY | 2024年 / 24卷 / 01期

关键词：

Vigna unguiculata; inheritance; genetic parameters; yield components; plant breeding;

D O I：

10.1590/1984-70332024v24n1a03

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

We investigated the genetic control of the three yield components in cowpea: number of grains per pod, pod length and grain size, in a biparental cross. Genetic parameters were estimated in generations of a cross between two contrasting genitors, using a randomized complete block design with three replications. Narrow-sense heritability estimates varied from 27% to 67%, suggesting that genetic gains can be achieved with selection. Pod length and grain size had the highest heritability values and genetic gains. The number of grains per pod is highly affected by the environment. Dominance was detected for all traits, mainly for pod length. However, additive gene effects accounted for more than 68% of the variation in all traits, which are controlled by at least 10 genes. It is possible to improve the evaluated traits via conventional breeding approaches, although large population sizes will be required in breeding stages.

引用

页数：8

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