欢迎访问《麦类作物学报》编辑部网站

作者	单位
曾明昊，田柏硕，曲铭妤，刘琦，陈晶	(1.新疆农业大学农学院，农林有害生物监测与安全防控重点实验室，新疆乌鲁木齐 830052 2.农业农村部西北荒漠绿洲农林外来入侵生物防控重点实验室（部省共建），新疆乌鲁木齐 830052）

摘要点击次数: 340

全文下载次数: 223

中文摘要:

新疆昭苏县年均气温低，小麦条锈菌可独立完成周年循环，同时当地可能与西邻的哈萨克斯坦存在菌源交流。为了明确该地区小麦条锈菌生理小种构成，对2023年采自新疆昭苏县100份小麦条锈菌标样进行生理小种鉴定。结果表明，共监测到16个生理小种，其中CYR34、CYR30、贵22-13及Su11-2 出现频率较高，分别为 21.62%、10.81%、10.81%和 9.45%；贵农22类群为优势类群，出现频率高达 39.19%。抗条锈病基因Yr1、YrA、Yr3、Yr6、YrVir1-4、YrSu和Yr9的毒性频率均大于70%，而抗条锈基因Yr3b+4b、YrJu1-4、Yr1,YrKy1-4、Yr10,Yr24/26和Yr5还可利用。这说明新疆昭苏县的小麦条锈菌生理小种丰富， CYR34已成为该地区的流行小种，部分抗锈基因已基本丧失抗性。

英文摘要:

Due to the annual low average temperature, wheat stripe rust(Puccinia striiformis f.sp.tritici, Pst) could complete the annual cycle independently in Zhaosu County, Xinjiang. Meanwhile, neighboring Kazakhstan to the west, the Pst in local may have exchanges with foreign ones. Therefore, it is of great significance to identify physiological race of wheat stripe rust in this county. In this study, 100 samples of wheat stripe rust was collected from Zhaosu county, Xinjiang in 2023, which was conducted to identify physiological race, then to clarify the physiological race composition in this region. The results showed that a total of 16 physiological races were detected, among which CYR34, CYR30, Gui22-13, and Su11-2 had higher frequencies, accounting for 21.62%, 10.81%, 10.81%, and 9.45% respectively. Guinong 22 group was the dominant group, with a high frequency of 39.19%. The occurrence frequencies of strains carrying resistance genes Yr1, YrA, Yr3, Yr6, YrVir1-4, YrSu, and Yr9 were all greater than 70%. However, the available resistance genes against stripe rust include Yr3b+4b, YrJu1-4, Yr1, YrKy1-4, Yr10, Yr24/26, and Yr5.The physiological races of wheat stripe rust in Zhaosu has abundant diversity, with CYR34 race becoming prevalent in the region. Some resistant genes have basically lost their resistance in Zhaosu County.

查看全文查看/发表评论下载PDF阅读器

关闭