论文部分内容阅读
通过 1 9个大丽轮枝菌菌株对 1 6个品种的抗、感反应 ,可以将大丽轮枝菌划分为落叶型和非落叶型两个基本类群。在落叶型类群中 ,根据 8个落叶型菌株在 R0 2、R0 4、R0 5、R0 6、R0 8、R0 9、R1 1、R1 4等 8个陆地棉品种上的综合抗、感表现首次将其分为强致病力 ( XS4为代表 )、中等偏强致病力 ( T9为代表 )和中等致病力 ( VD8为代表 ) 3类。通过对 R0 5、R0 6、R0 8、R0 9、R1 1、R1 4等品种的抗病鉴定 ,可以有效地把原产于江苏南通的落叶型菌株 VD8和原产于美国的落叶型菌株 T9相互区分开来。在非落叶型类群中 ,利用 R1 5、R1 4、R1 3、R1 0等 4个陆地棉品种 ,可以鉴别出 XJ4、XJ1、AY、VD40 4、VD32 6、LY、BP2等 7个菌株的致病基因不同 ,并将其分别定名为 1～ 7号小种。陆地棉 R0 1能抗所有试验用菌株。陆地棉 R1 2能有效地鉴别出强致病力菌系 ,该品种在鉴别强致病力菌系菌株方面有特异作用
Verticillium dahliae can be divided into two basic groups: deciduous and non-deciduous by resistant and susceptible reactions of 16 strains of Verticillium dahliae to 16 varieties. In the deciduous taxa group, based on the combined resistance of 8 defoliating strains on 8 Upland cotton cultivars such as R0 2, R0 4, R0 5, R0 6, R0 8, R0 9, R1 1, and R1 4, Divided into three categories: strong virulence (represented by XS4), moderate virulence (represented by T9) and moderate pathogenicity (represented by VD8). Through the resistance evaluation of R0 5, R0 6, R0 8, R0 9, R1 1, R1 4 and other varieties, the deciduous type strain VD8 originating from Nantong, Jiangsu Province and the deciduous type strain T9 originating from the United States Differentiate each other. In the non-deciduous taxa, we could identify 7 strains of XJ4, XJ1, AY, VD40 4, VD32 6, LY and BP2 by using four upland cotton varieties such as R1 5, R1 4, R1 3 and R1 0 Disease genes are different, and their names were 1 to 7 race. Upland cotton R0 1 resistant to all test strains. Upland cotton R1 2 can effectively identify strong virulent strains, which have specific roles in the identification of virulent strains