苜蓿品种对2种色型豌豆蚜的抗生性  

Antibiosis of five alfalfa cultivars to two colour morphs of Acyrthosiphon pisum

作　　者：金娟[1,2] 梁金[1,2] 贺春贵[1,3] 

机构地区：[1]甘肃农业大学草业学院,甘肃兰州730070 [2]草业生态系统教育部重点实验室中-美草地畜牧业可持续发展研究中心,甘肃兰州730070 [3]甘肃省农业科学院,甘肃兰州730070

出　　处：《草业学报》2013年第6期335-340,共6页Acta Prataculturae Sinica

基　　金：优良紫花苜蓿新品种适应性研究(2012GAAS15-20);甘肃省教育厅科研项目(0902-10)资助

摘　　要：在21～23℃,湿度50%～70%,光照时间14h的人工气候箱条件下,组建生命表并用其参数测定评价了5个苜蓿品种对2种色型豌豆蚜的抗生性。结果表明,同一苜蓿品种和不同苜蓿品种之间对2种色型豌豆蚜的抗生性都存在差异。以内禀增长率为抗性指标,俄罗斯杂花苜蓿对绿色型豌豆蚜的抗性高于红色型;阿尔冈金对红色型豌豆蚜抗性高于绿色型;甘农5号对2种色型豌豆蚜均具有一定的抗性;不同苜蓿品种对红色型豌豆蚜抗性大小为:俄罗斯杂花苜蓿<陕北野生苜蓿<阿尔冈金=甘农3号<甘农5号;绿色型豌豆蚜抗性为:阿尔冈金<俄罗斯杂花苜蓿<陕北野生苜蓿=甘农3号<甘农5号。Five cultivars of alfalfa （Medicago sativa） were used to identify their antibiosis to two colour morphs of the pea aphid Acyrthosiphon pisurn. Life tables were constructed at a constant temperature of 21-23℃, relative humidity different alfalf of 50%-70%, and illumination time of 14 h per day. The antibiosis of the same alfalfa and of a eultivars to the two colour morphs differed. Using the intrinsic rate of increase （Rm） as the in dex of alfalfa resistance to the aphid, the resistance of Russian Medicago varia （RM） to green aphid was stronger than to the pink aphid but the resistance of Algonquin （AL） to the pink aphid was stronger than to the green aphid, while G5 showed a certain resistance to both colour morphs. The order of antibiosis of the differ ent alfalfa cultivars to pink aphid was RM〈SW〈AL=G3〈G5, and to the green aphid was AL〈RM〈SW= G3 〈G5 .

关 键 词：豌豆蚜 苜蓿 生命表 内禀增长率 色型 

分 类 号：S541.9[农业科学—作物学]