Indexing

Physical Factors Associated with Resistance against Pulse Beetle, Callosobruchus chinesis (L.) on Chickpea Genotypes in Laboratory Conditions

Author: Lovely Kumari* and Md Abbas Ahmad

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Abstract

Screening of fifteen chickpea genotypes for identifying the physical basis resistance were carried out against Callosobruchus chinensis (L.) under laboratory condition in Department of Entomology at Dr. Rajendra Prasad Central Agricultural University, Pusa during 2016-17. On the basis of morphological observation recorded that seed coat thickness ranged from 0.09 to 0.31 mm with maximum in C1064 (0.31 mm) and minimum in C1021 (0.09 mm). 100 seed weight ranged from 13.88 to 31.53 grams with maximum in BG 256 (38.03g) and minimum in C1063 (13.88g). The female beetle laid the lowest number of eggs on rough and small seeds of C1021, however, it preferred to highest number of eggs on smooth and medium seeds of C1025. None of the genotypes were completely resistant to the attack of C. chinensis differed in the resistance, which may seems to be due to the physical seed characters (colour, shape, size, texture, seed coat thickness and 100 seed weight) of chickpea genotypes.

Keywords

Chickpea genotypes, Callosobruchus chinensis (L.), susceptibility, seed coat thickness, colour, smooth

Conclusion

On the basis of the current findings it may be concluded that the chickpea genotype C1120 was highly susceptible to C. chinensis and thus needs special attention to store than the least susceptible genotypes. Seed weight governed by seed size, might have influenced the amount of surface available to C. chinensis for oviposition. Seed weight and seed coat thickness did not play any important role in C. chinensis resistance. The results of this study showed that the least susceptible genotypes having rough and angular seed surface with small size like BG256, C1025, C1147, C1160, C1165, BG372, C1064, C1088, and C1156 proved promising and thus could be in future breeding purposes as C. chinensis resistant line, and these genotypes also deserves further studies as it is free from damage by pulse beetle.

References

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How to cite this article

Kumari, L. and Ahmad, M.A. (2021). Physical factors associated with resistance against Pulse Beetle, Callosobruchus chinesis (L.) on Chickpea genotypes in laboratory conditions. Biological Forum – An International Journal, 13(3): 665-668.