文献类型： 外文期刊

作者： Shahid, Muhammad Rafiq ¹ ; Shakeel, Muhammad ² ; Farooq, Muhammad ³ ; Arain, Muhammad Shahid ⁴ ; Hanif, Chaudhar ¹ ;

作者机构： 1.Cotton Res Inst, Multan, Pakistan

2.South China Agr Univ, Coll Agr, Key Lab Biopesticide Innovat & Applicat Guangdong, Guangzhou, Guangdong, Peoples R China

3.AARI, Cotton Res Stn, Faisalabad, Pakistan

4.Guangdong Inst Appl Biol Resources, Guangdong Publ Lab Wild Anim Conservat & Utilizat, Guangdong Key Lab Integrated Pest Management Agr, 105 Xingang Rd W, Guangzhou 510260, Guangdong, Peoples R China

5.Bahuddin Zakariya Univ, Bahadur Campus Layyah, Multan, Pakistan

6.Hubei Acad Agr Sci, Inst Plant Protect & Soil Sci, Wuhan, Hubei, Peoples R China

关键词： Transgenic cotton; P. gossypiella; Insecticidal protein; Short duration cotton

期刊名称：ARTHROPOD-PLANT INTERACTIONS （ 影响因子：1.988； 五年影响因子：2.059 ）

ISSN： 1872-8855

年卷期： 2018 年 12 卷 2 期

页码：

收录情况： SCI

摘要： Pink bollworm (Pectinophora gossypiella) is recognized as an important pest of cotton and can damage flowers and bolls of both Bt and non-Bt cultivars. Cry-1Ac in Bt cultivars is considered very effective in controlling lepidopterous larvae; therefore, the present study was carried out to investigate the impact of Cry1-Ac and the earliness index on the natural incidence of P. gossypiella at the Cotton Research Institute, Faisalabad. During 2015-2016, ten cultivars were used to determine the incidence of pink bollworm infestation. The experiment was repeated for 2 years. During the next year, Cry1-Ac and earliness traits of selected cultivars were also observed to determine their impact on pink bollworm. Correlation coefficient results regarding days to first flower (r value = 0.66) as well as the earliness index (r value = - 0.62) exhibited a strong association with pink bollworm, but Cry1-Ac had a weak association (r value = - 0.058) with pink bollworm. The coefficient of determination (R (2)) explained that variability of pink bollworm due to Cry1-Ac, the earliness index, and days to first flower was 18.0, 38.5, and 43.5%, respectively. Principal component analysis results showed that the first two PCs expressed 87% of the total variability. Clusters made on the basis of the studied parameters revealed that clusters 2 and 3 comprised the cotton cultivars possessing earliness traits compared with cluster 1. Therefore, it can be concluded that the earliness index in cotton is an important component for the sustainable management of pink bollworm infestation, the need for which is endless to evade the pink bollworm problem in the era of climate change.