摘要
利用行为生测考察了褐飞虱为害程度、水稻生育期和品种对水稻挥发物引诱褐飞虱卵期寄生蜂稻虱缨小蜂活性的影响.结果表明,雌成虫10头/株和20头/株为害1d的水稻挥发物,对稻虱缨小蜂具明显的引诱作用,而1头/株、5头/株、40头/株和80头/株为害1d的,与空白对照相比不显示明显的引诱作用.稻虱缨小蜂对TN1未处理稻株挥发物的趋性不明显,并且对不同生育期的稻株亦无明显差异;但受褐飞虱为害后,生育期60d的稻株比90d的对稻虱缨小蜂具更强的引诱作用.不同品种未处理稻株间,TN1挥发物对稻虱缨小蜂的引诱作用明显地比Nabeshi强,而其他品种间差异不显著.在受到褐飞虱为害后,品种间的差异趋于明显.汕优63比TN1具更强的引诱作用,而Nabeshi、IR26和丙97-59等品种对稻虱缨小蜂的引诱作用则明显弱于TN1.
Experiment was conducted in laboratory to study the effects of N. lugens damage levels, developmental stages of infested plants and rice cultivars on attractiveness of N. lugens-induced rice voltiles to Anagrus nilaparvatae Pang et Wang, an egg parasitoid of N. lugens. The results showed that the volatiles from plants infested with 10 or 20 gravid female N. lugens for one day had an obvious attractiveness to the parasitoid compared to the blank control, while the volatiles from plants infested with 1, 5, 40 or 80 gravid female N. lugens for one day did not. The parasitoid did not show any behavioral responses to the volatiles emitted from unmanipulated TN1 plants, and also showed no bias responses to the rice volatiles from different developmental stages. When attacked by N. lugens, however, the attractiveness of the volatiles from plants at the age of 60 days to the parasitoid was significantly stronger than that of the volatiles from plants at the age of 90 days. There were no differences in attractiveness of the volatiles of unmanipulated plants of various cultivars except for the case of comparison between cultivars TN1 and Nabeshi, in which the volatiles from TN1 plants were significantly stronger than those from Nabeshi. After being damaged by N. lugens, the differences in attractiveness among rice varieties increased significantly. The volatiles released from TN1 plants demonstrated significant weaker attractiveness to the parasitoid than those from Shanyou 63, but were obviously stronger than those from Nabeshi, IR26 and Bing 97-59.
出处
《浙江大学学报（农业与生命科学版）》
CAS
CSCD
北大核心
2004年第6期589-595,共7页
Journal of Zhejiang University:Agriculture and Life Sciences
基金
国家科技部"973"资助项目(G2000016208).
关键词
水稻
生育期
水稻品种
虫害程度
褐飞虱
稻虱缨小蜂
水稻挥发物
行为反应
rice plants
developmental stage
rice variety
damage level
Nilaparvata lugens
Anagrus nilapartvatae
rice volatiles
behavioral response
