Rpp-Gene pyramiding confers higher resistance level to Asian soybean rust

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 isolates. objective this study was evaluate sister lines, previously evaluated by Meira et al. (2022). https://doi.org/10.1007/s10681-020-02667-x ), presenting different Rpp-pyramided Phakopsora pachyrhizi clarify effect two originally developed lines compared existing or possessing only single under field conditions. 52117-1 (Rpp2 + Rpp1-b), 52117-57 52117-59 Rpp1-b) 52117-60 Rpp4) showed levels sources control, carrying PI 200487 (Rpp5), 200492 (Rpp1), 230970 (Rpp2), 459025A (R pp4), 506764 (Rpp3 Rpp5) significant sporulation (SL), uredinia per lesion (NoU), frequency lesions (%LU). Only, line 52117-54 52117-63 level smaller than 594723 (Rpp1-b) similar respectively. Rpp2 Rpp1-b (52116-54, 52116-74, 52117-21, 52117-60), Rpp4 (52117-60), were classified as “highly resistant” “resistant”. Furthermore, one line, immunity The alternative achieving against ASR.