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Nguyễn Tiến Long; Trần Thị Hoàng Đông; Lê Khắc Phúc; Trần Đăng Hoà; Trần Đăng Hòa(1)

Các dòng sinh học (Biotype) của rầy nâu Nilarpavata lugens Stal (Homoptera: Delphacidae) tại Thừa Thiên - Huế

Study on biotypes of brown plant hopper Nilarpavata lugens Stal (Homoptera: Delphacidae) in Thua Thien - Hue province, Vietnam

Nông nghiệp & Phát triển nông thôn

2012

11

3-6

1859-4581

Dòng sinh học; Giống kháng; IPM; Rầy nâu; Nilarpavata lugens Stal; Thừa Thiên - Huế

Brown plant hopper (BPH), Nilaparvata lugens Stal (Homoptera: Delphacidae), is the most seriqus insect pest of rice production in Vietnam. Planting BPH resistant varieties is the most effective measure in an integrated pest management (IPM) system on rice. However, after a period of BPH resistant varieties used, BPH develops biotypes that are capable of harming to the resistant varieties. The purpose of this study is to identify BPH byotypes for an orientation to research on selection and sustainable application of BPH resistant varieties of rice in Thua Thien-Hue province. The results show that differential varieties of Mudgo (Bph1 resistant genes) is susceptible, ASD7 (Bph2 resistant gene) and Babawee (Bph4 resistant genes) are high resistance; Rathu Heenati (Bph3 resistant gene) is morderately resistance to BPH of Thua Thien-Hue. These results indicate that BPH population of Thua Thien-Hue belongs to biotype 2. It is necessary to continuously determine the sustainability of rice resistant varieties and the tend to development of new biotypes of BPH in Thua Thien -Hue province.

TTKHCNQG, CVv201