小麦黑胚病及其对种子发芽出苗的影响  

Black Embryo Disease and Its Effect on Germination and Emergence of Wheat.

作　　者：安调过[1] 穆素梅[1] 

机构地区：[1]中国科学院石家庄农业现代化研究所

出　　处：《植物保护》1995年第3期20-21,共2页Plant Protection

摘　　要：本试验表明链格孢菌（Ａｌｔｅｒｎａｒｉａｔｅｎｕｉｓ）是引致小麦黑胚病的主要病原菌，占病原分离物９１％。黑胚病虽然对种子的发芽没有明显影响，但显著影响出苗率和幼苗生长力。当前推广的品种中，黑胚率为１１．１％左右，严重的高达４２．８％。Of the black embryo grains in the currently cultivated commercial wheat varieties 91.4%was caused by Alternaria tenuis,and only 8.6%was resulted from Helminthosporium sativum. Black embryo disease had no obvious effect on wheat germination, but greatly inhibited emergence,viability and growth potential of seedlings.The infection rate of black embryo disease in most commercial varieties tested was around 11.1%,and only a few seriously infected up to 42.8%. But the actual rate of infected grains was more higher than that caught by the nakeeye.

关 键 词：小麦 黑胚病 链格孢菌 出苗率 

分 类 号：S435.121.4[农业科学—农业昆虫与害虫防治]