Asian corn borer (ACB), Ostrinia furnacalis (Guenée), is the most important insect pest of corn in China, which causes serious yield loss and reduces the quality of corn. Corn plant resistance plays an corn), at different developmental stages on survival and development of Asian corn borer larvae were important role in ACB IPM on corn. However, the level of resistance varies both among varieties and among corn plant tissues. Impacts of plant tissues of four type of corn, i.e. Gaoyou 298 (high oil corn), Bainuo 4 (waxy corn), Chaotian 2 (super sweet corn) and Tiandan 8 (sweet corn), Nongda 108 and Xingkang 2 (field evaluated in laboratory bioassay. Results showed that the survival and development of ACB larvae were significantly various when fed on the plant tissues at different developmental stage of four type of corn hybrids. When fed on the whorl leaves, the highest survival and fastest growth of larvae were observed on Gaoyou 298, and the lowest on Xingkang 2. The survival rate and larval weight were significantly higher when fed on the tassels of Gaoyou 298, Tiandan 8 and Bainuo 4 compared with Xingkang 2 and Chaotian 2. The young husks of Tiandan 8 were suitable for ACB larvae fed on compared with Bainuo 4 and Xingkang 2 that significantly inhibited the larvae development. The survival rates were much higher and the weights of larvae and pupae were much heavier when fed on silks of Tiandan 8 and Nongda 108 than on others. The survival rates of ACB larvae were significantly low when fed on silks of Chaotian 2 and Xingkang 2 than on others. The larvae developed very well when fed on the cobs of Chaotian 8.The survival and the pupation rates were much higher, but the weights of pupae were smaller when fed on cobs of Tiandan 8 and Bainuo 4. The survival and pupation rates were much lower and the development time to pupate was much longer when ACB larvae fed on cobs of Xingkang 2. The development time from larvae to pupate and from pupae to emerge of the ACB when fed on kernels of Xingkang 2 and Nongda 108 were much longer than that on Tiandan 8, Chaotian 2, Bainuo 4 and Gaoyou 298, the corn for special uses. It was showed that the kernels of wax corn, sweet corn, and high oil corn were much suitable to ACB larvae than field corn. It also indicated that some sweet and waxy corn varieties had certain resistant to ACB, on which the Asian corn borer larvae could not make much heavier damage than susceptible field corn.
Wang Zhenying, He Kanglai, Xing Zhenjuan, Bai Shuxiong, Wen Liping
. Impacts of plant tissues of different type corn on growth and survival of Asian corn borer, Ostrinia furnacalis (Guenée)[J]. Chinese Agricultural Science Bulletin, 2004
, 20(5)
: 217
-217
.
DOI: 10.11924/j.issn.1000-6850.0405217
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