摘要
人工接种试验结果表明，D.tritici-repentis侵染小麦幼苗使胚根变褐、缢缩、腐烂，芽鞘出现褐色条斑，甚至死亡。侵染幼苗叶片出现梭形或椭圆形病斑，边缘有较明显的黄色晕圈。侵染成株期叶片形成较大病斑。侵染穗部使领壳变褐或小穗死亡，籽粒胚部变黑。D.tritici-repentis对小麦各生育期的致病力较D.sorokiniana弱。
The results of artificial inoculation showed that the embrgo roots were changed brown,Contracted and rotten.Brown strip lesions or death occurred on coleoptile by D. tritici-repentis infected wheat sprout. Spindle and ellise lesions occurred on the leaves. There was yellow disk on lesion edge of infected wheat seedling leaves. Lesion was larger on in fected wheat adult leaves. The glumes were changed brown and the micro-ears dead. The seed embryoes were changed black on infected wheat ears. Pathogenicity of D.tritici-repentis was lower than D.sorokiniana in different growing time of wheat.
出处
《洛阳农业高等专科学校学报》
1999年第1期3-6,共4页
Journal of Luoyang Agricultural College
基金
河南省教委自然科学基金
关键词
小麦
黄斑叶枯病
德氏霉菌
致病力
wheat, yellow blothch, leaf blight, D. tritici-repentis pathogenicity
