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采用聚丙烯酰胺凝胶垂直板电泳法，测定“东肥”、“华合”、“华合×东肥”、“东肥×华合”、中国种“８１１”、日本种“８１２”、“８１１×８１２”、“８１２×８１１”、“肥激”（东肥经激光处理所得新种）蚕卵和蚕幼虫血液中酯酶同工酶的酶谱，并观察它们的经济性状，结果表明两亲本亲缘关系愈远，则谱带相差愈大，同源性愈弱，杂种一代的酯酶同工酶谱表现出亲本的互补关系，且出现新的“杂种酶带”，其光密度也较高，经济性状较亲本有所提高。经激光处理的品种其基因型已发生变化，其酶谱及经济性状均发生改变。
The vertical plate electrophoresis with polyacrylamide gel was used to determine the contents of “Dongfei”, “Huayu”, “Huacheng × Dongfei”, “Dongfei × Huayu”, Chinese “811”, Japanese “812” “811 × 812”, “812 × 811”, “fat stimulated” (East Fertilizer new species obtained by laser treatment) silkworm egg and silkworm larval esterase enzyme zymogram and observed their economic traits, the results The results showed that the farther the genetic relationship between the two parents, the larger the difference of the bands, and the weaker the homology. The esterase isozyme of the hybrid progeny showed the complementary relationship of the parents, and a new “hybrid enzyme band” appeared. The optical density Also higher, economic traits have been higher than the parents. The genotypes of laser-treated varieties have changed and their zymograms and economic traits have changed.