Study about the impact of autumn season on different breeds of Bombyx mori L. at different parameters

The impact of autumn season on rearing, breeding and economic traits of Bombyx mori L. was observed for each parameter of each 12 breeds under study in direction of sustainable use of natural resources and biodiversity. On the basis of average Evaluation Index (EI) of all parameters, it became evident that seven breeds showed good suitability during autumn season because their average EI remained more than 50. Among all breeds evaluated SK1 (59.70), CSR2 (53.24), CSR18 (53.03), SK6 (52.37), SH6 (51.37) and NB4D2 (50.30) acquired 1st, 2nd, 3rd, 4th, 5th, 6th and 7th rank respectively, on the basis of average EI. Thus, it became evident that autumn season remain suitable for these breeds with respect of proper rearing and breeding as well as for good productivity. Autumn season was observed as best suitable season for rearing of SK1 breed because this breed acquired 1st rank on the basis of average results of all parameters studied during present research work. The results also indicated that autumn season remain not suitable for CSR19, SK28, DUN6, CSR4 and DUN22 breeds of Bombyx mori L. because these breeds acquired 8th, 9th, 10th, 11th and 12th rank on the basis of average EI.