Preeti Singh and BS Chandel

Prevention of food losses during postharvest storage is of paramount economic importance. An experiment was conducted to assess the pupal development of lesser grain borer, Rhyzopertha dominica Fabr. on 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 under laboratory condition. It was found that largest pupal period (10.02 days) was observed in K. Sona followed by TL 174 and K 65 having the pupal period 10.74 and 11.10 days respectively whereas the highest pupal period was observed in HI 7747 having the period 14.12 days and differs significantly from the other. The intermediate varieties were K 65, UPT 72294 and HD1982 in which pupal period 10.10 days, 10.50 days and 12.40 days were observed respectively which do not differ significantly. The highest period was recorded in UPT 72294 having 44.96 days, which differs significantly from to each other. The highest percentage of adult emergence were noticed in UPT 72294 followed by TL 174. Whereas lowest emergence were in HI 7747 in which the last emergence were found.    

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