College of Plant Protection, Shenyang Agricultural University, Shenyang, Liaoning 110866, China.
Plant Dis. 2020 Jul;104(7):1939-1943. doi: 10.1094/PDIS-12-19-2736-RE. Epub 2020 May 12.
Wheat stem rust, caused by f. sp. , is one of the most serious fungal diseases in wheat production, seriously threatening the global supply of wheat and endangering food security. The present study was conducted to evaluate wheat monogenic lines with known genes to the most prevalent f. sp. races in China. In addition, wheat lines introduced from the International Maize and Wheat improvement Center (CIMMYT) with resistance to the Ug99 race group were also evaluated with the prevalent Chinese f. sp. races. The monogenic lines containing , , , , , , , , , and were effective against races 21C3CTTTM, 34C0MRGSM, and 34C3MTGQM at both seedling and adult-plant stages. In contrast, monogenic lines containing , , , , , , , , , , , , , , , , and were highly susceptible to these races at both seedling and adult-plant stages. Lines with , , , , , , , , , , , , , , , and were resistant to one or more of the tested races. Among the 123 CIMMYT lines, 38 (30.9%) showed varying levels of susceptibility to Chinese f. sp. races. The results should be useful for breeding wheat cultivars with resistance to stem rust.
小麦条锈病由 f. sp. 引起，是小麦生产中最严重的真菌病害之一，严重威胁全球小麦供应，危及粮食安全。本研究旨在评估具有已知 基因的小麦单基因系对中国最流行的 f. sp. 菌株的抗性。此外，还评估了来自国际玉米和小麦改良中心（CIMMYT）的具有抗 Ug99 菌株组的小麦品系对中国流行的 f. sp. 菌株的抗性。含有 、 、 、 、 、 、 、 和 的单基因系在幼苗和成株期对菌株 21C3CTTTM、34C0MRGSM 和 34C3MTGQM 均有效。相比之下，含有 、 、 、 、 、 、 、 、 、 、 、 和 的单基因系在幼苗和成株期对这些菌株高度敏感。含有 、 、 、 、 、 、 、 、 、 、 、 和 的品系对一个或多个测试菌株具有抗性。在 123 个 CIMMYT 品系中，有 38 个（30.9%）对中国 f. sp. 菌株表现出不同程度的敏感性。这些结果对于培育抗条锈病的小麦品种具有重要意义。
