Asian soybean rust (ASR) causes large reductions in yield, affecting the entire grain market. With low fungicide efficiency, use of resistant cultivars can be an economical, safe, efficient, and sustainable control alternative. However, great variability aggressiveness ASR Rpp genes are limited. Thus, gene pyramiding is a promising strategy for development with high resistance to greater number...

the 1rs chromosome segment derived from petkus rye carries genes for resistance to three wheat rust diseases, namely lr26 for resistance to leaf rust (caused by puccinia triticina), yr9 for resistance to stripe rust (p.striiformis f. sp. tritici) and sr31 for resistance to stem rust (p. graminis f. sp. tritici). since sec-1 is tightly linked with the three rust resis-tance genes electrophoresis...