Preeti Singh and BS Chandel

An experiment was conducted for the varietal ovipositional preference of lesser grain borer, Rhyzopertha dominica Fabr. on different varieties of wheat, Triticum aestivum Linn.(Poaceae). The wheat varieties ie; HI 7747, K 65, TL 174, UPT 72294, HD 1982 and Kalyan sona were used under storage condition at the Department of Botany, D.B.S. College, CSJM University, Kanpur. All the experiments were conducted in incubator at 32 °C. The highest fecundity 121.33 was found in variety TL 174, which differs significantly from the others. The second in order to preference for oviposition, having 73.33 eggs was variety HI 7747 followed by UPT 72294 and HD 1982 in which 67.33 and 54.00 eggs have been laid respectively. Varieties Kalyan sona and K 65 having 27.33 and 30.33 eggs are comparatively less preferred for egg laying. All the varieties showed more or less performance for the protection of R. dominica. However, the lowest ovipositional preference 27.33% in Kalyan sona followed by K 65 30.33 per cent; HD 1982, 54.00 per cent; UPT 72294 (67.33%), HI 7747(73.33%) and TL 174 (121.33%), mean egg laid, respectively.

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