Abstract: In vitro leaf tests of T₁ and T₂ plants from pinⅡ-transgenic Chinese cabbage and flowering Chinese cabbage for evaluating resistance to Common Cabbage Worm(Pieris rapae Linnaenus) and Diamond Moth(Plutella xylostella Linnaenus) larvae were made under laboratory condition.The results showed that larvae fed with transgenic leaf tissue had a higher mortality especially in 1st and 2nd instar.The test of common cabbage worm larvae fed with T₁ transgenic Chinese cabbage revealed that the developments were retarded,and the mortality of larvae fed with old leaves was significantly higher than that of larvae fed with young leaves.The test of diamond moth larvae fed with T₂ transgenic Chinese cabbage and flowering Chinese cabbage revealed that the developments were retarded in varying degree;The transgenic Chinese cabbage produced more effective insect-resistance than transgenic flowering Chinese cabbage,the mortality of larvae fed with flowering Chinese cabbage strain 2-24 was 64% and that of larvae fed with Chinese cabbage strain 2-6 was 90%;The weight of pupae,percent of pupation and percent of eclosion were lower than non-transgenic plants in different degree.

Key words: Cabbage, Common Cabbage Worm, Diamondback Moth, Insec-t resistant, Pin Ⅱ

CLC Number: 

• S332.3