Varietal resistance of canola and influence of abiotic factors on population of mustard aphid Lipaphis erysimi kalt. | [Pakistan journal of arid agriculture • 2004]

Author(s):

1. Malik Arshad Ayyaz: Department of Entomology, University of Arid Agriculture, Rawalpindi, Pakistan

2. Muhammad Aslam: Department of Entomology, University of Arid Agriculture, Rawalpindi, Pakistan

Abstract:

Antixinosis studies were carried out on eight genotypes of canola against mustard aphids Lipaphis erysimi Kalt. Dunkeld (11.64 aphids/plant) showed highest resistance followed by Zafar 2000 (13.77 aphids/plant). Low levels of resistance were shown by Western (14.21 aphids/plant) and Can. II. (15.37 aphids plant). Local variety Shirallee (16.47 aphids/plant), Abuseen (16.99 aphids/plant) and Bulbul 98 (17.08 aphids/plant) were found susceptible. Variety 19-H (17.08 aphids/plant) was highly susceptible. Aphid activity started at the end of February and continued until start of April reaching climax during mid-end of March with positive correlation with temperature and negative correlation with relative humidity and rainfall.

Page(s): 67-71

DOI: DOI not available

Published: Journal: Pakistan journal of arid agriculture, Volume: 7, Issue: 1, Year: 2004

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