title: [Dynamics of indole alkaloids in wheat varieties with various resistance to wheat aphid Sitobion avenae].
abstract: UV spectrometry measurement on the indole alkaloids (IA) contents of seven wheat varieties (KOK1679, My295, Li, Han4564 and Yanda1817, resistant to S. avenae; Shaanximazha and Lovrin10, susceptible to S. avenae) showed that during tillering and stem elongation stages, KOK1679, My295 and Li had a higher IA content (> 0.5 mg.g-1 FW); and during heading and anthesis stages, the penultimate leaves of all five resistant varieties contained higher IA (> 0.5 mg.g-1 FW). The IA content was lower in the flat leaves of both resistant and susceptible varieties, but was significantly higher in the ears of resistant varieties (up to 0.645 mg.g-1 FW in KOK1679) than in those of susceptible ones. It was showed that the IA content in wheat's ear played an important role in the resistance to S. avenae.
authors.affiliation: Department of Entomology, China Agricultural University, Beijing 100094, China. caiqn@cau.edu.cn
authors.forename: Qingnian
authors.initials: Q
authors.lastname: Cai
authors.forename: Yu
authors.initials: Y
authors.lastname: Wang
authors.forename: Qingwen
authors.initials: Q
authors.lastname: Zhang
authors.forename: Mingzang
authors.initials: M
authors.lastname: Cheo
mesh_terms: D000818:Animals; D001042:Aphids / Q000254:growth & development*; D026121:Indole Alkaloids / Q000032:analysis*; D014908:Triticum / Q000737:chemistry* / Q000469:parasitology*
chemical_list: D026121:Indole Alkaloids