Identification of Stripe Rust Resistance Genes in Common Wheat Cultivars From the Huang-Huai-Hai Region of China

• Published in: Plant disease p. PDIS10192119RE
• Main Authors: Huang, Liang, Xiao, Xing Zhi, Liu, Bo, Gao, Li, Gong, Guo Shu, Chen, Wan Quan, Zhang, Min, Liu, Tai Guo
• Format: Journal Article
• Language: English
• Published: United States 01.06.2020
• Subjects: gene postulation; molecular marker test; Yr gene; wheat stripe rust; adult-plant resistance
• ISSN: 0191-2917
• DOI: 10.1094/PDIS-10-19-2119-RE

Wheat stripe (yellow) rust, caused by f. sp. ( ), is a serious fungal disease worldwide, especially in the Huang-Huai-Hai region, a main wheat production area in China. Gene postulation, molecular testing, and pedigree analysis were conducted to determine the presence of stripe rust resistance genes to 15 races in 66 selected commercial wheat cultivars released from 2000 to 2016. In addition, races CYR32, CYR33, and CYR34 were used to evaluate resistance to at the adult-plant stage of wheat in the field. Four genes ( , , , and ) were postulated in 24 wheat cultivars either singly or in combination. Thirty-six cultivars might contain unknown genes, whereas no identified gene was postulated in six cultivars. was detected at a frequency of 28.8%, and no cultivars carried , , or . Ten cultivars (15.2%) exhibited adult-plant resistance in the field tests with three predominant races. Three cultivars (Langyan 43, Xinong 889, and Yunfeng 139) had all-stage resistance. These results are useful to growers selecting cultivars and to breeders aiming to use more resistance genes to develop new cultivars with effective resistance in order to reduce stripe rust damage.