Yumei Li, Jiaru Yang, Jing Zhang, Shuanglin Du, Hongli Ji, Zehou Liu, Hao Tang, Peixun Liu, Qin Wang, Haiqin Zhang, Wuyun Yang, Jun Li, Hongshen Wan
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Identification of QTLs for adult-plant stripe rust resistance in Chinese wheat landrace Yizhanghongkemai and assessment of their utility for decreasing yield loss.
Stripe rust is prevalent in the wheat-growing region of southwestern China. Frequent changes in stripe rust pathogen virulence in this region lead to a rapid loss of disease resistance among wheat varieties. However, Chinese wheat landrace Yizhanghongkemai (YZHK) has exhibited adult-plant stripe rust resistance for more than one decade in a disease nursery in southwestern China. To elucidate the underlying genetic basis, quantitative trait loci (QTLs) for adult-plant stripe rust resistance in YZHK were analyzed using an inclusive composite interval mapping method. Six QTLs for adult-plant stripe rust resistance were detected on chromosomes 1BL, 2BL, 3DS, 5BL, 5DL, and 7DS in multiple environments. Notably, QYrYZHK.saas-1B, QYrYZHK.saas-2B and QYrCY.saas-5D were likely new disease resistance loci. By comparing the effects of QTL alleles on yield and its related components in field trials in which stripe rust was severe and effectively controlled, we determined that three QTLs significantly decreased yield losses due to stripe rust, among which the QTLs on chromosomes 1BL and 7DS were from YZHK, whereas the QTL on chromosome 5DL was from the other parent Chuanyu 12. These QTLs represent elite genetic resources for developing wheat varieties with adult-plant stripe rust resistance in the wheat-growing region of southwestern China.
Supplementary information: The online version contains supplementary material available at 10.1007/s11032-025-01583-z.
期刊介绍：
Molecular Breeding is an international journal publishing papers on applications of plant molecular biology, i.e., research most likely leading to practical applications. The practical applications might relate to the Developing as well as the industrialised World and have demonstrable benefits for the seed industry, farmers, processing industry, the environment and the consumer.
All papers published should contribute to the understanding and progress of modern plant breeding, encompassing the scientific disciplines of molecular biology, biochemistry, genetics, physiology, pathology, plant breeding, and ecology among others.
Molecular Breeding welcomes the following categories of papers: full papers, short communications, papers describing novel methods and review papers. All submission will be subject to peer review ensuring the highest possible scientific quality standards.
Molecular Breeding core areas:
Molecular Breeding will consider manuscripts describing contemporary methods of molecular genetics and genomic analysis, structural and functional genomics in crops, proteomics and metabolic profiling, abiotic stress and field evaluation of transgenic crops containing particular traits. Manuscripts on marker assisted breeding are also of major interest, in particular novel approaches and new results of marker assisted breeding, QTL cloning, integration of conventional and marker assisted breeding, and QTL studies in crop plants.
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