Zhang Minghao, Zeng Minghao, Tian Baishuo, Liu Qi, Li Guangkuo, Gao Haifeng, Chen Li, Ma Zeyu, Chen Jing
Key Laboratory of the Pest Monitoring and Safety Control of Crops and Forests of the Xinjiang Uygur Autonomous Region, College of Agronomy, Xinjiang Agricultural University, Urumqi, 830052, China.
Key Laboratory of Prevention and Control of Invasive Alien Species in Agriculture and Forestry of the North- Western Desert Oasis, Ministry of Agriculture and Rural Affairs, Urumqi, 830052, China.
Sci Rep. 2024 Dec 28;14(1):31308. doi: 10.1038/s41598-024-82772-2.
Wheat stripe rust is a fungal disease caused by Puccinia striiformis f. sp. tritici. The outbreak of wheat stripe rust will have a great impact on wheat production in Xinjiang, China. In order to identify resistance to wheat stripe rust and the distribution of resistance genes in 82 wheat cultivars (41 spring wheat and 41 winter wheat), wheat seedling resistance was evaluated using CYR32, CYR33 and CYR34, and wheat adult plant stage resistance was identified using a combination of 3 races. Six molecular markers were used to identify Yr29, Yr39, Yr46, Yr69 and YrTr1 in 82 wheat cultivars. The results showed that 3 of 82 wheat cultivars (Xinchun No.14, Xinchun No.22, and Xindong No.22) were immune to stripe rust at the adult plant stage. Xinchun No.29, Xinchun No.32, Xindong No.5 and Xindong No.29 were resistant at all stage. The highest detection rates were for Yr69 and YrTr1, at 78.05% and 76.83%. However, the detection rates for Yr39 and Yr46 were only 0 and 2.44%, respectively. The Xindong No.22 were detected with the most resistance genes, which included 4 Yr genes. Furthermore, Xindong No.22 were immune to the disease at adult plant stage. The results confirmed the resistance gene distribution of the wheat cultivars in Xinjiang were heterogeneously, and the number of Yr genes was significantly and positively correlated with wheat cultivars resistant to stripe rust.
小麦条锈病是由条形柄锈菌小麦专化型引起的一种真菌病害。小麦条锈病的爆发将对中国新疆的小麦生产产生重大影响。为了鉴定82个小麦品种（41个春小麦和41个冬小麦）对小麦条锈病的抗性及抗性基因的分布情况，利用CYR32、CYR33和CYR34对小麦苗期抗性进行了评价，并结合3个生理小种对小麦成株期抗性进行了鉴定。利用6个分子标记对82个小麦品种中的Yr29、Yr39、Yr46、Yr69和YrTr1进行了鉴定。结果表明，82个小麦品种中有3个品种（新春14号、新春22号和新冬22号）在成株期对条锈病免疫。新春29号、新春32号、新冬5号和新冬29号在各生育期均表现抗病。Yr69和YrTr1的检出率最高，分别为78.05%和76.83%。然而，Yr39和Yr46的检出率分别仅为0和2.44%。新冬22号检测到的抗性基因最多，包括4个Yr基因。此外，新冬22号在成株期对该病免疫。结果证实新疆小麦品种抗性基因分布存在异质性，Yr基因数量与抗条锈病小麦品种呈显著正相关。
