Survival, development and fecundity of Maruca vitrata (Lepidoptera: Pyralidae) on short-duration pigeonpea
DOI:
https://doi.org/10.53550/jfl.v19i1.2289Keywords:
Cajanus cajan, Development, Fecundity, Maruca vitrata, Oviposition, Pigeonpea, SurvivalAbstract
Larvae of Maruca vitrata (Geyer) were reared on leaves, flowers and pods of nine short-duration pigeon pea genotypes under laboratory conditions to study the suitability of different genotypes for survival, growth, pupation and fecundity of this insect. On an average, 50-94% of the larvae completed their development on flowers and 57-97% on pods. Larval survival and pupation were the greatest on cowpea leaves. The insects reared on pods had higher and shorter larval, and adult developmental periods than on flowers or leaves. The larvae reared on leaves exhibited low larval and pupal weights, longer larval developmental time, higher pupal and shorter adult life span. Larvae reared on pigeonpea cv. ICPL 84023 had the lowest larval and pupal weights and longest pupal and adult developmental time as compared to other cultivars. The adult female whose larvae reared on flowers produced more eggs than those reared on pods. However, egg hatching was greater in the eggs of the moths whose larvae were reared on pods than flowers. Moths emerged from the flower and pod of ICPL 90036- M1-2 produced highest number of eggs followed by ICPL 90011 and MPG 537-M1-2-M5. The influence of different plant parts on M. vitrata population dynamics and the potential impact on pigeonpea genotypes has been discussed.
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