Characterization of soybean genotypes for Asian soybean rust reaction

被引:6
|
作者
de Araujo, Milena Moura [1 ]
Vello, Natal Antonio [2 ]
机构
[1] USP, Ctr Energia Nucl Agr, BR-13416000 Piracicaba, SP, Brazil
[2] USP, Escola Super Agr Luiz de Queiroz, Dept Genet, BR-13418900 Piracicaba, SP, Brazil
关键词
Glycine max; Phakopsora pachyrhizi; breeding; genetic resistance; GENE CONFERRING RESISTANCE; PHAKOPSORA-PACHYRHIZI; DISEASE RESISTANCE; IDENTIFICATION; ORGANIZATION; INHERITANCE; ARABIDOPSIS; COMPONENTS; EXPRESSION; MARKERS;
D O I
10.1590/S1984-70332010000300003
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
Our objective was to characterize soybean experimental lines for Asian soybean rust reaction. In the 2004/2005 growing season, three experiments were conducted with middle-cycle and three with late-cycle genotypes, designed in randomized blocks with four replications. Twelve experimental lines and two cultivars of each cycle were used. In each experiment the plant management differs as follows: three applications of carbendazim or three of flutriafol or without applications. The experimental lines with high yield, low notes to the symptoms and resistance to lodging, were selected and tested again in the 2005/2006 growing season. Genotypes with high severity and yield were considered tolerant to rust and the low severity and high yield ones as moderately resistant. Among the medium-cycle genotypes, there was moderate resistance to rust in one line and tolerance in five. Among the late-cycle genotypes, the six lines showed moderate resistance. The line USP 97-08135 is more tolerant to rust.
引用
收藏
页码:197 / 203
页数:7
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