Influence of seed treatment and abiotic factors on damage to Bt and non-Bt cotton genotypes by the serpentine leaf miner Liriomyza trifolii (Diptera: Agromyzidae)

    Dhillon, M K and Sharma, H C (2010) Influence of seed treatment and abiotic factors on damage to Bt and non-Bt cotton genotypes by the serpentine leaf miner Liriomyza trifolii (Diptera: Agromyzidae). International Journal of Tropical Insect Science, 30 (3). pp. 127-131. ISSN 1742-7592

    [img]
    Preview
    		 PDF - Published Version
    Download (142kB) | Preview

    Abstract

    In recent years, the serpentine leaf miner, Liriomyza trifolii (Burgess), has become a major pest of cotton (Gossypium spp.) in India, with high levels of incidence observed at the seedling stage, particularly in transgenic Bt cotton. We monitored the severity of infestation and damage by L. trifolii to transgenic and non-transgenic genotypes of Gossypium arboreum and G. hirsutum between 2002 and 2007. Overall, significantly lower L. trifolii damage occurred in G. arboreum varieties than in G. hirsutum varieties and hybrids. Among the G. hirsutum genotypes, damage was significantly lower in varieties than in hybrids. However, no significant differences in damage were observed between Bt and non-Bt cotton hybrids. Abiotic factors had a major influence on the severity of damage; there was a significant and negative association of L. trifolii damage with open pan evaporation (E), maximum temperature, solar radiation and sunshine, and a significant and positive association with relative humidity and rainfall (RF). Multiple stepwise regression analysis indicated that 99% of the variation in L. trifolii damage was accounted for by RF, open pan E and relative humidity.

    Item Type: Article
    Divisions: UNSPECIFIED
    CRP: UNSPECIFIED
    Uncontrolled Keywords: serpentine leaf miner, Liriomyza trifolii, transgenic Bt cotton, Gossypium hirsutum, Gossypium arboreum, abiotic factors, India
    Subjects: Others > Genetics and Genomics
    Depositing User: Mr Sanat Kumar Behera
    Date Deposited: 07 Oct 2011 05:55
    Last Modified: 07 Oct 2011 05:58
    URI: http://oar.icrisat.org/id/eprint/2050
    Official URL: http://dx.doi.org/10.1017/S1742758410000275
    Projects: UNSPECIFIED
    Funders: Swiss Agency for Development and Cooperation
    Acknowledgement: We are grateful to Dr David Henshaw for his support with identifying L. trifolii. We acknowledge the funding received from the Swiss Agency for Development and Cooperation, Berne; the Departments of Biotechnology and Science and Technology, New Delhi; and the IndoSwiss Collaboration on Biotechnology.
    Links:
    View Statistics

    Actions (login required)

    View Item View Item
    OAR@ICRISAT is powered by EPrints 3 which is developed by the School of Electronics and Computer Science at the University of Southampton. More information and software credits.