Munis Entomology Zoology | |
Seasonal abundance of Diaretiella rapae (M´Intosh) (Braconidae: Aphidiinae) parasitizing Lipaphis erysimi (Kaltenbach) (Hemiptera: Aphididae) in Brassica juncea variety Pusa bold | |
M. S. Akhtar1  | |
关键词: Brassica juncea; Diaretiella rapae; Parasitism; Lipaphis erysimi; Seasonal abundance; | |
DOI : | |
学科分类:昆虫学 | |
来源: Munis Research Group | |
【 摘 要 】
The occurrence of Diaretiella rapae parasitizing Lipaphis erysimi in Mustard variety Pusa bold (Brassica juncea) was evaluated. Successful parasitism was 75.46% and 68.96% during 2006-07, 2007-08 respectively. Correlation coefficient of average per cent relative humidity with both aphid (r=-0.52) and parasitoid (r=-0.59) were negatively significant whereas day (r=0.65) and the night temperature (r=0.61) had significant positive correlations with the parasitoid population only. The best fitted polynomial regression equation indicated that 30-60% variability of the aphid population could be explained by the different weather parameters, while 11-50% variability of the parasitoid population could be explained by weather parameters.
【 授权许可】
Unknown
【 预 览 】
Files | Size | Format | View |
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RO201902020623458ZK.pdf | 84KB | download |