Impact of yam bean genotypes on growth and development of spotted pod borer Maruca vitrata G. (Lepidoptera: Pyralidae)

摘要

Impact of eight yam bean genotypes viz; DHP-2, DPH-11, DPH-17, DL-14, DPH-18, DPH-45, Nepali and R.M-1 on growth and development of Maruca vitrata G. under laboratory conditions studies indicated that, R.M-1 favours spotted pod borer in laying eggs with maximum fecundity of female moth (80 eggs per female). Length of all the five instars and larval weight was also found maximum in genotype R.M-1, showing the suitability of this genotype for the growth and development of spotted pod borer. Among the test genotypes, the total life cycle of M. vitrata was shorter and faster on R.M-1 showing its preference.