ARS | Publication request: Registration of 70 Common Spring Wheat Germplasm Lines Resistant to Stripe Rust

Submitted to: Journal of Plant Registrations
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: July 14, 2011
Publication Date: December 19, 2011
Citation: Wang, M., Chen, X., Xu, L., Cheng, P., Bockelman, H.E. 2011. Registration of 70 Common Spring Wheat Germplasm Lines Resistant to Stripe Rust. Journal of Plant Registrations. 6:104-110.

Interpretive Summary: Wheat stripe rust is one of the most important disease problems of agricultural crops in the U.S. and the world. Breeding for stripe rust resistant cultivars, which is the most preferred approach to control the disease, urgently needs new sources and genes for effective resistance. We have developed 70 common spring wheat germplasm lines resistant to stripe rust from crosses of 66 common and 4 durum wheat lines originating from 28 countries. Among the new lines, 4 have all-stage resistance effective against the currently predominant races of the stripe rust pathogen in the U.S., 11 have high-temperature adult-plant (HTAP) resistance, 13 have effective all-stage resistance and possibly HTAP resistance, and 42 have HTAP resistance and ineffective all-stage resistance. Based on stripe rust reactions and origins, the majority of the 70 lines may have different genes for stripe rust resistance. These lines were also selected based on their relatively good plant types and agronomic traits and should be useful in diversifying resistance genes used in breeding programs for developing wheat cultivars with stripe rust resistance.

Technical Abstract: Seventy common spring wheat (Triticum aestivum subsp. aestivum) germplasm lines resistant to stripe rust, caused by Puccinia striiformis f. sp. tritici, were developed from crosses of 66 common and 4 durum (T. turgidum subsp. durum) wheat lines originating from 28 countries. Among the new lines, 4 have all-stage resistance effective against the currently predominant races in the U.S., 11 have high-temperature adult-plant (HTAP) resistance, 13 have effective all-stage resistance and possibly HTAP resistance, and 42 have HTAP resistance and ineffective all-stage resistance. Based on stripe rust reactions and origins, the majority of the 70 lines may have different genes for stripe rust resistance. These lines were also selected based on their relatively good plant types and agronomic traits and should be useful in diversifying resistance genes used in breeding programs for developing wheat cultivars with stripe rust resistance.