农药学学报2013，Vol.15Issue(1)：59-64,6.DOI:10.3969/j.issn.1008-7303.2013.01.08
新疆MEAM1烟粉虱隐种对吡虫啉的抗性遗传力分析及交互抗性测定
Realized heritability analysis of resistance to imidacloprid and cross-resistance to insecticides in Bemisia tabaci Middle-East-Asia-Minor 1 (MEAM1) in Xinjiang
摘要
Abstract
The method of threshold trait analysis described by Tabashnik was used to estimate realized heritability (h2) of resistance to imidacloprid and the development rate of resistance in Bemisia tabaci Middle-East-Asia-Minor 1 (MEAM1) cryptic species in Xinjiang, and the cross-resistance of resistant population to different insecticides was detected. The results showed that under the ordinary selection pressure 30% -50% , compared with the original unselected populations, the resistance of MEAM1 to imidacloprid was developed 28. 01 times higher after 8 generations by uninterrupted selection, also, the realized heritability (h2) was 0. 429 7. Given that h2 of field population was half of those value at 0. 214 9, the risk predicting of resistance of MEAMI to imidacloprid for field population showed that it takes 10-8 generations to achieve 10-fold resistance under the selection pressure of 50%-60% , and take 6-4 generations to get the same resistance under the selection pressure of 70%-90% . The results indicated that a high level of risks in the development of resistance to imidacloprid in MEAMI cryptic species both in field and laboratory conditions. From this detection of cross-resistance, we found that,a medium to low level of cross-resistance to acetamiprid and thiamethoxam which are the same type of insecticides as imidacloprid was obtained at RR = 10.78-fold and 4. 75-fold, respectively, and 2-3 folds decrease of susceptibility to spinosad,chlorpyrifos,pyriproxyfen and beta-cypermethrin. And also, very low level or null cross-resistance was observed in the treatment of abamectin, spinetoram and sulfoxaflor.关键词
烟粉虱/新疆MEAM1隐种/吡虫啉/抗性/遗传力分析/交互抗性Key words
Bemisia tabaci/Middle-East-Asia-Minor 1 (MEAMI)/Xinjiang/imidacloprid/resistance/ realized heritability analysis/ cross-resistance分类
农业科技引用本文复制引用
李国志,曹骞,段晓东,张鑫,马德英..新疆MEAM1烟粉虱隐种对吡虫啉的抗性遗传力分析及交互抗性测定[J].农药学学报,2013,15(1):59-64,6.基金项目
国家自然科学基金资助项目(31060248) （31060248）
公益性行业(农业)科研专项经费项目(201303019) （农业）
