河南农业大学学报2019，Vol.53Issue(2)：193-199,7.
低温胁迫对切花菊叶片光化学反应参数的影响
Effects of low temperature stress on photochemical reaction parameters of chrysanthemum leaves
摘要
Abstract
A study on the changes in photochemical reaction parameters of cut chrysanthemum leaf under different temperatures was conducted by taking cut chrysanthemum cultivar'White Pingpang'as the experimental material,and three processing temperatures of 15 ℃(CK) ,4 ℃ and - 4 ℃ were set with each sustaining for 12 h to measure the chlorophyll fluorescence parameters. The results showed that compared with 16 ℃,Fo decreased by 9. 7％ and 51. 5％,while RC /Cso experienced a decline by 15. 4％ and 86. 6％ at 4 ℃ and - 4 ℃,respectively. The OJIP curve,MR/Mro curve and other photochemical reaction parameters were significantly changed as temperature decreased. It indicated that the LHCII resolved under low temperature stress,opening degree of PSII reaction center reduced, partial reaction center was deactiviated,and PSI reaction center activity reducd. Besides, - 4 ℃ treatment caused serious damage to PSI of cut chrysanthemum leaf,and the photosynthetic activity of the whole plant decreased.关键词
切花菊/低温胁迫/叶绿素快速荧光/光系统/OJIP曲线Key words
cut chrysanthemum/low temperature stress/rapid chlorophyll fluorescence/photosystem/OJIP curve分类
农业科技引用本文复制引用
赵鹏飞,聂林杰,王磊,栗燕,张开明,李永华..低温胁迫对切花菊叶片光化学反应参数的影响[J].河南农业大学学报,2019,53(2):193-199,7.基金项目
河南省科技攻关项目(182102110190) （182102110190）
