Comparison of wheat varieties (Triticum aestivum L.) for aphid (Homoptera: Aphididae) infestation in relation to physico-morphic traits sown under semi arid climatic conditions

Muhammad Waqar Hassan

Abstract


Research was conducted to assess aphid infestation and comparison of physico-morphic traits in different wheat genotypes against aphids during 2015-16. Four wheat verities viz., Galaxy, Shafaq, Saher and 3084 were sown in experimental field area of The Islamia University of Bahawalpur, Pakistan. Aphid population was recorded at 4±2 day intervals. Data regarding number of nodes per tiller, inter-nodal distance, leaf area (cm2), plant height (cm), number of grains per tiller, number of spikelet per tiller, spike length (cm) and hair density on leaf lamina (cm) were collected and analyzed statistically. Significant differences were found among genotypes regarding aphid population, spike length, number of spikelets and number of grains per tiller. Variations were found to be non-significant among genotypes regarding leaf area, plant height, inter-nodal distance and hair density. Variety Galaxy was least preferred by aphids with minimum population of aphid 27.27 per tiller, whereas Saher was found comparatively susceptible with maximum aphid population 44.22 per tiller. Pearson correlation was done between aphid population and above mentioned physico-morphic traits. Correlation coefficient (r) values showed among the studied traits, number of nodes contributed maximum and had strong positive correlation with aphid population density while number of grains and hair density on lamina showed negative correlation with aphid population in these varieties.


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MAYFEB Journal of Agricultural Science
Toronto, Ontario, Canada
MAYFEB TECHNOLOGY DEVELOPMENT
ISSN 2371-512X