烟粉虱嗅觉行为反应在抗烟粉虱豇豆种质筛选中的应用

Application of insect olfactory responses in the screening of cowpea germplasm resistant to Bemisia tabaci

为明确24种豇豆种质对Q型烟粉虱的抗性差异,以便更好地筛选抗性种质资源,采用昆虫嗅觉行为反应测定法,结合盆栽试验与豇豆形态特征调查,研究了Q型烟粉虱对不同豇豆的趋性选择、72 h内产卵量以及趋性与豇豆形态特征的关系。结果表明,Q型烟粉虱对不同豇豆的趋性选择差异显著,在参试豇豆材料中,夏豇1号对Q型烟粉虱的引诱作用显著高于其他种质,而金富翠柳的驱避作用显著高于其他种质,后者可作为豇豆抗Q型烟粉虱育种的亲本或栽培品种。参试豇豆种质的蔓性、荚型、荚色等形态特征对Q型烟粉虱趋性选择的影响不大。

To clarify the differences in resistance to Q-type Bemisia tabaci among 24 cowpea germplasm materials and to provide basic information for screening new insect-resistant cowpea cultivars,we studied the selection preference and 72-hour fecundity of Q-type Bemisia tabaci on different germplasm materials and its relationship with cowpea morphological characteristics.The determination of insect olfactory response,combined with pot planting trials and surveys of cowpea morphological characteristics were used in this study.The results showed significant differences in the selection of Q-type Bemisia tabaci on the tested cowpea cultivars.‘Xiajiangyihao’was found to be significantly more attractive to Q-type than the other materials,while‘Jinfucuiliu’was significantly more repellent.It was suggested that‘Jinfucuiliu’is suitable for planting and can be used as a breeding material resistant to the Q-type Bemisia tabaci.Morphological characters such as trailing,pod color,and pod length of the cowpea had no effect on the selection of Q-type Bemisia tabaci.