International Journal of Advanced Science and Research

International Journal of Advanced Science and Research


International Journal of Advanced Science and Research
International Journal of Advanced Science and Research
Vol. 1, Issue 11 (2016)

Evaluation and quantification of digestive amylase enzyme and its relation with productive and economic traits of multivoltine silkworm genetic resources of India


N Balachandran, CK Kamble

Amylase is one of the key enzymes involved in the digestion and carbohydrate metabolism in insects. There is wide genetic variability in the activity of digestive amylase among the silkworm genetic resources of varying geographical origin and yield potential. The digestive amylase is generally very high in the non diapausing multivoltine silkworm races than that of the diapausing bivoltine stocks. Therefore in the present study an attempt has been made to evaluate and quantify the digestive amylase enzyme activity in the 73 multivoltine silkworm genetic resources conserved at Central Sericultural Germplasm Resources Centre, Hosur which is the only centre where all the multivoltine silkworm genetic resources were conserved following standard protocols. The study has been also carried out with the objective of revealing the quantum of variability of the amylase enzyme activity in the multivoltine silkworm genetic resources of the varying geographical origin and their association with that of the productive and economic traits. The study revealed that significant variability in the quantity of amylase 1600 µg to 2250 µg among the 73 MV silkworm genetic resources evaluated. Positive correlations in some of the traits like weight of 10 larvae, effective rate of rearing by number and single cocoon weight and cocoon yield per 100 dfls were observed. Some of the traits like total larval duration, effective rate of rearing by number, pupation and single shell weight showed negatively correlation. Significant negative correlations were noticed in fecundity, hatching, fifth age larval duration and shell ratio.
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How to cite this article:
N Balachandran, CK Kamble. Evaluation and quantification of digestive amylase enzyme and its relation with productive and economic traits of multivoltine silkworm genetic resources of India. International Journal of Advanced Science and Research, Volume 1, Issue 11, 2016, Pages 01-08
International Journal of Advanced Science and Research