HomeInternational Rice Research Notesvol. 23 no. 3 (1998)

Green Leafhopper-Susceptible Advanced Lines Resistant to Rice Tungro Viruses

E. R. Tiongco | H. C. Martin | S. E. Abdula | X. A. Truong | A. E. Villanueva | L. S. Sebastian | E. R. Angeles | G S. Khush

Discipline: Agriculture, Pest Management



Eight rice varieties and lines susceptible to green leafhoppers were tested in field plots in Muñoz, Nueva Ecija, and Midsayap, North Cotabato, for their reactions to tungro viruses. IR26, TKM6, Utri Merah, IR69705-1-1-3-2-1, IR69706-1-4-2-5-2-2, IR73889-5-1-1-1-1-1-2, IR1561-228-3-3, and TN1 (control) were tested during the 1996 wet season (WS), 1997 dry season (DS), and 1997 WS cropping. They were planted in 4 x 4-m plots laid out in a randomized complete block design with four replications. All rice hills were scored visually for disease incidence at 30 and 60 d after transplanting (DAT).