The Effect on the Development of Silkworm Larvae of Transgenic Rice Pollen with a Synthetic cry1Ab Gene from Bacillus thuringiensis
Bt水稻"克螟稻”花粉对家蚕生长发育的影响 The Effect on the Development of Silkworm Larvae of Transgenic Rice Pollen with a Synthetic cry1Ab Gene from 　　Bacillus thuringiensis

The effect on the development of silkworm larvae of Bt transgenic rice pollen containing cry1 Ab gene from Bacillus thuringiensis were investigated.Compared with normal treatment,mortality of newly hatched silkworm larvae in either Bt rice pollen or susceptible rice pollen treatment were not significantly different,while the variances of silkworm larvae weight at third instar were significant at 0.01level.In addition,the weight of each silkworm larva at third instar in Bt rice pollen treatment showed a big difference,the biggest and smallest silkworm larvae were 183.8mg and 18.1mg respectively,which was probably caused by the difference of Bt rice pollen concentration on the mulberry leaves.As pollen concentration on the mulberry leaves in actual field was lower than in lab,the influence on the development of newly hatched silkworm larvae of Bt rice pollen is not likely significant in actual ecological environment.