秋季连阴雨对油茶PSⅡ的影响研究  

Influence of Continuous Autumn Rain on PSⅡof Camellia oleifera

作　　者：李涵茂 卿晨雨 宋忠华 陈梦醒 罗永 许翔 陈健翔 Li Hanmao;Qing Chenyu;Song Zhonghua;Chen Mengxing;Luo Yong;Xu Xiang;Chen Jianxiang(Hunan provincial Hengyang Agro-meteorological Experiment Station,Hengyang 421000;Meteorological Disaster Prevention and Mitigation Key Laboratory of Hunan Province,Changsha 410118;Changning Meteorological Bureau,Changning 421500;Hunan Provincial Changsha Agro-meteorological Station,Changsha 410125;Hengyang Meteorological Bureau,Hengyang 421000)

机构地区：[1]湖南省衡阳市农业气象试验站,衡阳421000 [2]气象防灾减灾湖南省重点实验室,长沙410118 [3]常宁市气象局,常宁421500 [4]湖南省长沙农业气象试验站,长沙410125 [5]衡阳市气象局,衡阳421000

出　　处：《湖北林业科技》2024年第3期24-27,81,共5页Hubei Forestry Science and Technology

基　　金：国家重点研发计划专题“热带与特色林果气象灾害监测预警技术与业务平台”(2019YFD1002203);湖南省2022年科研课题“干旱胁迫对油茶叶绿素荧光特性的影响”(XQKJ22B041);中国气象局创新发展专项“油茶产量形成关键期主要气象因子研究”(CXFZ2022J055)。

摘　　要：利用OS30P+叶绿素荧光仪测定油茶不同月份和秋季连阴雨期间快速叶绿素荧光诱导动力学曲线,开展秋季连阴雨对油茶叶片PSⅡ的影响研究。结果表明:2020年5—8月,油茶新叶叶绿素荧光参数存在一定的波动,但各月份的叶绿素荧光参数之间无显著差异。油茶新叶前期PSⅡ中Q_(A)向Q_(B)的电子传递效率低于后期,新叶前期电子传递速率可能受到抑制。2020年9月17—28日,发生了中度秋季连阴雨天气,该时期快速叶绿素荧光诱导动力学参数无显著变化,阴雨寡照天气对油茶光合系统没有造成显著的不利影响。可以认为,秋季中度连阴雨天气对油茶的光合系统没有造成显著的不利影响。In order to investigate the influence of continuous autumn rain on the PSⅡof Camellia oleifera,an OS30P+modulated chlorophyll fluorometer was used to monitor the dynamic curves of rapid chlorophyll fluorescence induction of C.oleifera under continuous autumn rain.The results showed that the chlorophyll fluorescence parameters of C.oleifera’s new leaves fluctuated May to August 2020,along with no significant variation between the chlorophyll fluorescence parameters of each month.The electron transfer efficiency from Q_(A) to Q_(B) was lower in the early stage of new leaves than that in the later stage,suggesting that the electron transfer rate is inhibited in the early stage of new leaves.There was a moderate continuous rain in autumn from September 17 to 28,2020,with no significant change in the kinetic parameters of rapid chlorophyll fluorescence induction.The cloudy and rainy weather had no significantly adverse effects on the photosynthetic apparatus of C.oleifera.It can be considered that the moderate continuous rainy weather in autumn did not cause substantial negative effects on the photosynthetic organs of C.oleifera.

关 键 词：秋季连阴雨 油茶 PSⅡ 

分 类 号：S794.4[农业科学—林木遗传育种]