摘要
以台湾沟叶结缕草盆栽草坪为试材,在强光辐射和遮阴2种光处理后,利用叶绿素荧光测定技术,研究了0.5mol·L^(-1)盐胁迫对沟叶结缕草光化学效率的影响。结果表明:在0.5mol·L^(-1) NaCl条件下,不同光适应的沟叶结缕草叶片PSⅡ最大光化学量子产量(Fv/Fm)、PSⅡ有效光化学量子产量(Fv′/Fm′)、PSⅡ实际光化学量子产量(PhiPSⅡ)、光化学淬灭(qP)及电子传递速率(ETR)均逐渐降低,非光化学淬灭(NPQ)逐渐升高,沟叶结缕草叶片发生了光抑制,光化学效率下降,且随着处理时间的延长,光抑制程度逐渐加重。强光适应下的沟叶结缕草对盐胁迫的适应性较弱光适应下的沟叶结缕草强。
Two different light adaptation of Taiwan Zoysia matrella with pre-treatment under strong radiation and extreme shade were employed to study the effects of 0.5 mol·L^-1 NaCl for 24 days on photochemical efficiency by using chlorophyll fluorenscence technology.The results showed that the Fv/Fm,PhiPSⅡ,Fv′/Fm′,qP and ETR in leaves of two light adaptation types gradually reduced under 0.5 mol·L^-1 NaCl,NPQ gradually increased,photochemical efficiency gradually reduced and photoinhibition appeared,and photoinhibition increased with the extension of time.Adaptability of the sun-type to salt stress was stronger than the shade-type.
作者
王加真
WANG Jiazhen(Department of Biological and Agricultural Technology, Zunyi Normal College, Zunyi,Guizhou 56300)
出处
《北方园艺》
CAS
北大核心
2017年第24期104-109,共6页
Northern Horticulture
基金
教育部留学回国人员科研启动基金资助项目(2015-1098)
贵州省教育厅产学研合作示范基地资助项目(2015-344)
遵义师范学院博士启动基金资助项目(2014-11)
关键词
台湾沟叶结缕草
光适应
盐胁迫
荧光参数
光化学效率
Taiwan Zoysia rnatrella
light-adaptation
salt stress
fluorescence parameters
photochemical efficiency
