草业科学2017，Vol.34Issue(12)：2569-2574,6.DOI:10.11829/j.issn.1001-0629.2017-0383
豌豆蚜在6个不同抗性苜蓿品种上取食行为的EPG分析
EPG analysis of Acyrthosiphon pisum feeding behavior on six alfalfa varieties with different resistances
摘要
Abstract
The feeding behavior of Acyrthosiphon pisum on six alfalfa varieties with different resistances,and the resistance mechanisms of these different cultivars,were examined using the electrical penetration graph (EPG)technique.The results showed that there were eight EPG waveforms of aphids feeding on alfalfa leaves, but the durations of the eight waveforms were different between the six cultivars.The resistance of alfalfa was consistent with the duration of the E1 wave,which was produced by A.pisum feeding on the phloem of the al-falfa varieties.The duration of the E1 wave was significantly different between the six different resistances of the alfalfa cultivars;the duration of the E1 wave was longer when the resistance of the alfalfa was stronger. The duration of the E1 wave on the most resistant cultivar was 36.83 min for 'MF4020',and the duration of E1 wave on the least resistant cultivar was 1.50 min on 'Giant pastoral 37CR'.The resistance mechanisms of the different alfalfa cultivars to aphids are further illustrated by electrophysiology in research;it could provide the scientific basis for the breeding of alfalfa varieties with increased resistance to aphids.关键词
苜蓿蚜虫/刺吸式昆虫/抗性水平/刺吸取食/刺探电位图谱/抗蚜机制Key words
alfalfa aphid/piercing-sucking insects/resistance level/sucking and feeding/electrical penetration graph/resistant mechanism to aphid分类
农业科技引用本文复制引用
魏淑花,曹春婧,朱小芳,张蓉,王颖..豌豆蚜在6个不同抗性苜蓿品种上取食行为的EPG分析[J].草业科学,2017,34(12):2569-2574,6.基金项目
宁夏回族自治区农作物重大育种专项——苜蓿新品种选育(2014NYYZ03) （2014NYYZ03）
国家牧草产业技术体系——盐池综合试验站 (CARS-34) （CARS-34）
