空间环境对小麦叶绿素荧光及光合特性的影响  

EFFECTS OF SPACE ENVIRONMENT ON CHLOROPHYLL FLUORESCENCE AND PHOTOSYNTHESIS CHARACTERISTICS OF WHEAT

作　　者：陆璃[1] 吕金印[1] 巩擎柱[1] 高俊凤[1] 

机构地区：[1]西北农林科技大学生命科学学院,陕西杨凌712100

出　　处：《核农学报》2006年第6期464-468,共5页Journal of Nuclear Agricultural Sciences

基　　金：西北农林科技大学校重点科研项目(2003)

摘　　要：以小麦品种西农1043、陕253为材料,经空间诱变处理后将种子在地面种植,测定小麦功能叶片的叶绿素荧光参数和光合特性的变化。研究表明:空间诱变处理后,2个供试材料的PSⅡ原初光能转化效率(Fv/Fm)、PSⅡ潜在活性(Fv/F0)、光化学猝灭系数(qP)均比对照低,同时处理的净光合速率也低于对照,非光化学猝灭(qN)较对照有所升高。表明小麦种子经过空间诱变处理后,光合系统的发育受到一定程度的影响,光合电子传递、光合原初反映过程受到抑制,光合作用能力下降,植株形态受到影响,千粒重有所下降。The effects of the space environment on the chlorophyll fluorescence parameters and photosynthesis characteristics of wheat cultivars, Xinong1043 M1 and Shaan253 M1, were studied.The results showed that the decrement of contents of PS H primary photochemical efficiency （ Fv/Fm）, potential activity （ Fv/F0 ）, photochemical quenching coefficient （ qP ） and photosynthesis rate（Pn）were less than that of control, increment of non-photochemical quenching coefficient （qN）were more than that of control. The results suggested that photosynthetic apparatus were damaged, photosynthetic electron transport, photosynthetic primary reaction were inhibited, rate of photosynthesis decreased and growth of M1 plant were retarded, which leading to thousand kernel weights decreased.

关 键 词：小麦种子 空间环境 叶绿素荧光 光合特性 

分 类 号：S512.1[农业科学—作物学]