14个饲用高粱品种抗蚜性评价

摘要

To seek a forage Sorghum variety with high resistance to aphid,a field experiment was conducted Lanzhou City,Gansu Province.Aphid number ratio and aphid damage index were used to identify and analyze of resistance of 14 forage Sorghum varieties to aphid (the mixture of aphid population Rhpalosiphum padi (L), Sitobion avenae and Schhizaphid graminum ).The results showed that Jujia (17.78),3180 (15.56),Mule 8000 (16.67)and Big kahuna (18.89 )have moderate aphid resistance.Liaotian No.3 (21.11)and 2180 (25.56 ) have low aphid resistance.Japanese forage sorghum (32.22),Hercules (33.33),Liaotian No.5 (35.56),1990 (35.56)and 4180 (38.89)have low infection of aphid.1230 (46.67)and 1180 (45.56)have moderate infection of aphid.Paka (57.78)was high infection of aphid.%为明确不同饲用高粱品种的抗蚜特性,在甘肃兰州大田以自然混合种群禾谷缢管蚜(Rhpal-osiphum padi)、麦长管蚜(Sitobion avenae)和麦二叉蚜(Schhizaphid graminum)为试虫,采用蚜量比值法和蚜害指数法相结合的方法,鉴定并评价了14个饲用高粱品种的田间抗蚜性.结果表明:以蚜害指数法为测定标准,绝佳(17.78)、3180(15.56)、牧乐8000(16.67)和大卡(18.89)表现为中抗,辽甜3号(21.11)和2180(25.56)表现为低抗,日本饲用高粱(32.22)、大力士(33.33)、辽甜5号(35.56)、1990(35.56)和4180(38.89)表现为低感,1230(46.67)和1180(45.56)表现为中感,帕卡(57.78)表现为高感.