HomeInternational Rice Research Notesvol. 26 no. 2 (2001)

Comparing the performance of three host-related populations of Nilaparvata lugens (Stål) on holidic diets with various amino acid compositions

Qiang Fu | Zhitao Zhang | Cui Hu

Discipline: Agriculture



An evident virulence shift of the brown planthopper Nilaparvata lugens (Stål) to rice varieties with specific major resistance genes generally occurs upon rearing the insects for several generations on resistant varieties (Rombach and Gallagher 1994, Ketipearachchi et al 1998). Amino acids are the dominant nitrogen nutrients in rice phloem (Fukumorita and Chino 1982). However, little information exists about the effect of amino acids on the survival and development of different host-adapted populations (or biotypes) of N. lugens. In this study, we compared the performance of three host-related N. lugens populations on holidic (chemically defined) diets with various amino acid compositions.