title: [Secondary compounds in rice varieties resistant to Nilaparvata lugens].
abstract: By the method of high-performance liquid chromatography (HPLC), this paper studied the contents of 13 secondary compounds from 130 samples of 26 rice varieties resistant to brown planthopper (BPH) Nilaparvata lugens biotype II. A prediction model was established through principal component analysis and multiple regression analysis: Y = 3.4593 - 0.02491 X1 + 0.08475 X2 - 0.04227 X8 + 0.1174 X12. The relationships between the BPH-resistant level of rice varieties and the area values of chromatographic peaks were significant (r2 = 0.84, P < 0.01). The results demonstrated that Peak 1, Peak 2, Peak 8 and Peak 12 were the major secondary compounds affecting the resistance to BPH biotype II, which suggested that the BPH resistance of the varieties came from the action of several secondary compounds that varied in contribution to the resistance.
authors.affiliation: Department of Chemistry, College of Sciences, Laboratory of Insect Ecology, South China Agricultural University, Guangzhou 510642, China. zhaoying@scau.edu.cn
authors.forename: Ying
authors.initials: Y
authors.lastname: Zhao
authors.forename: Fengkuan
authors.initials: F
authors.lastname: Huang
authors.forename: Xiaoli
authors.initials: X
authors.lastname: Tong
authors.forename: Bing
authors.initials: B
authors.lastname: Ling
authors.forename: Xiongfei
authors.initials: X
authors.lastname: Pang
mesh_terms: D000818:Animals; D002851:Chromatography, High Pressure Liquid; D006430:Hemiptera / Q000187:drug effects* / Q000235:genetics; D007313:Insecta / Q000502:physiology*; D012275:Oryza / Q000378:metabolism* / Q000502:physiology*; D010935:Plant Diseases; D012044:Regression Analysis