Author(s):

Sunil Gocher, Manoj Kumhar, BL Jat and Sarfraz Ahmad

Abstract: It is well known that certain varieties or strains of crop are less attacked by a given insect pests than others because of natural resistance. In the cultural practices to minimize the losses caused by aphid, growing of resistant varieties is most important one in the crop management. To evaluate ten groundnut (Arachis hypogaea L.) varieties and improved lines for resistance against sucking insect aphid (Aphis craccivora Koch), field experiment was laid out in a simple Randomized Block Design (RBD) during Kharif 2018. The aphid population commenced in the last week of July and peaked in the second week of September. On the basis of aphid population the groundnut varieties TAG-24, RG-510 and genotype RG-632 were proved to be highly resistant, the varieties RG-578, RG-425 and RG-382 were least resistant. The remaining varieties, RG559-3, TG-37A and genotypes RG-622, RG-625 showed intermediary behavior. Field experiments to further assess the aphid populations and screening trials to establish the mechanisms of resistance in these genotypes should be considered as a priority area for immediate research work.

Pages: 182-184  |  1091 Views  360 Downloads

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