Reaction of soybean cultivars to natural infection by Asian rust

被引:2
|
作者
Antunes da Cruz, Maria Fernanda [1 ]
de Souza, Giselle Anselmo [2 ]
Rodrigues, Fabricio Avila [3 ]
Sediyama, Carlos Sigueyuki [2 ]
de Barros, Everaldo Goncalves [1 ]
机构
[1] Univ Fed Vicosa, Dept Biol Geral, BR-36570000 Vicosa, MG, Brazil
[2] Univ Fed Vicosa, Dept Fitotecnia, BR-36570000 Vicosa, MG, Brazil
[3] Univ Fed Vicosa, Dept Fitopatol, BR-36570000 Vicosa, MG, Brazil
关键词
Glycine max; Phakopsora pachyrhizi; reciprocal crosses; diallel; plant breeding; resistance; GENETIC-CONTROL; RESISTANCE;
D O I
10.1590/S0100-204X2011000200015
中图分类号
S [农业科学];
学科分类号
09 ;
摘要
The objective of this work was to evaluate the progress of Asian soybean rust (Phakopsora pachyrhizi) on Brazilian soybean genotypes destined for silage production, under natural conditions of infection. Rust severity over time and combining ability of five cultivars and 20 F(3) soybean progenies were evaluated. The largest area under rust progress curve (AURPC) was 2,116 for progenies from the cross between cultivars UFVS 2003 x UFV16, and the smallest was 1,307 for UFV16 x Tucunare. The effects of the general and specific combining abilities for AURPC were significant between the parents and progenies, as well as for the reciprocal crosses. These results indicate that resistance to Asian soybean rust can be influenced by maternal components.
引用
收藏
页码:215 / 218
页数:4
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