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Pakistan Journal of Biological Sciences
Year: 2004  |  Volume: 7  |  Issue: 1  |  Page No.: 87 - 89

Effect of Different Cotton Genotypes on Parasitism Rate of Trichogramma chilonis Ishii

Ghulam Mustafa Cheema, Abida Nasreen and Muhammad Iqbal    

Abstract: Parasitization rate by egg parasitoid, Trichogramma chilonis, was observed on artificially released eggs of Angoumois grain moth, Sitotroga cerealella, under field conditions on different cotton varieties viz., CIM-473, CIM-497, CIM-446, CIM-499, S-12, MNH-552, NIAB-78, NIAB-Krishma, BH-118, FH-900 and FH-901. Highest rate of parasitism (28%) was found on BH-118. It was followed by NIAB-Krishma (26.33%), FH-901 (25.00%), FH-900 (23.67%) and CIM-473 (22.00%). On CIM-497 and NIAB-78, 18 and 12% parasitization was observed. Lowest rate of parasitism (4.67%) was observed on CIM-499 followed by S-12 (5.33%), CIM-446 (6.67%) and MNH-552 (7.67%).

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