期刊
CROP BREEDING AND APPLIED BIOTECHNOLOGY
卷 13, 期 1, 页码 75-82出版社
BRAZILIAN SOC PLANT BREEDING
DOI: 10.1590/S1984-70332013000100009
关键词
Backcross breeding; gene pyramiding; marker-assisted selection; pathogenic diversity
资金
- JIRCAS
In this study, the influence of genetic background on the resistance level of a soybean line carrying Rpp2, Rpp4, and Rpp5 was evaluated by backcrossing it with a susceptible variety. It was also evaluated eight lines which carry these Rpp genes against five Asian soybean rust (ASR) isolates, in order to determine the likely range of resistance against ASR isolates differing in pathogenicity. The results indicated that a high level of resistance against various ASR isolates could be retained in lines carrying the three Rpp genes in susceptible genetic backgrounds, although minor influences of plant genetic background and ASR pathogenicity to the ASR resistance could occur. Thus, lines with the pyramided three Rpp genes should be effective against a complex pathogen population consisting of diverse Phakopsora pachyrhizi isolates.
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