Association of secondary traits with yield in maize F 1 's

Ciência Rural

Souza, Velci Queiróz de¹  Follmann, Diego Nicolau¹  Baretta, Diego²  Nardino, Maicon¹  Konflanz, Valmor Antonio³  Caron, Braulio Otomar¹  Carvalho, Ivan Ricardo¹ 

[1] Universidade Federal de Santa Maria, Frederico Westphalen, Brazil;Universidade Federal de Pelotas, Pelotas, Brazil;Melhorista de Plantas da Empresa KSP Sementes Ltda, Pato Branco, Brasil

关键词:  direct and indirect effects;    Zea mays L;   

DOI  :  10.1590/0103-8478cr20150253

学科分类：农业科学（综合）

来源: Universidade Federal de Santa Maria * Centro de Ciencias Rurais

【 摘 要 】

:The objective was to identify phenotypic and genotypic associations, and cause-and-effect relations of secondary components on primary components to establish criteria in the indirect selection process for maize. Partial diallel crosses were conducted in Clevelândia. F1's were evaluated in five environments. For the purpose of increasing the yield of corn grain, breeders should seek to reduce the characters distance from the last node to the first branch of the tassel, tassel length and number of branches. The indirect selection for distance from the last node to the first branch of the tassel would be effective to increase the grain yield. The selection for smaller leaf angle, larger stem diameter and thousand grain weight are favorable for increasing grain yield in maize.

【 授权许可】

Unknown