干旱胁迫下冠菌素对花生幼苗叶片光合特性及内源激素含量的影响  

Effects of Coronatine on Photosynthetic Characteristics and Endogenous Hormones Contents of Peanut Seedlings under Drought Stress

作　　者：张甜 戴常青 王铭伦 王月福 张晓军 邹晓霞 ZHANG Tian;DAI Changqing;WANG Minglun;WANG Yuefu;ZHANG Xiaojun;ZOU Xiaoxia(Shandong Provincial Key Laboratory of Dryland Farming Technology,College of Agriculture,Qingdao Agricultural University,Qingdao 266109,China;Rongcheng City West Street office Agriculture Office,Rongcheng 264300,China)

机构地区：[1]青岛农业大学农学院/山东省旱作农业技术重点实验室,山东青岛266109 [2]荣成市城西街道办事处农业办公室,山东荣成264300

出　　处：《青岛农业大学学报（自然科学版）》2018年第3期207-212,共6页Journal of Qingdao Agricultural University(Natural Science)

基　　金：科技部"十二五"国家科技支撑计划项目(2014BAD11B04);国家花生产业技术体系建设专项(CARS-13-生态与土壤管理);山东省高校优秀科研创新团队建设项目(6212n2);山东省现代农业产业技术体系花生产业创新团队建设项目(SDAIT-05-04-05);青岛农业大学高层次人才启动基金(631409)资助

摘　　要：在日光温室条件下,以‘鲁花11号’花生品种为材料,通过浸种处理,系统研究了PEG模拟干旱胁迫下冠菌素(COR)对花生幼苗叶片光合特性和内源激素含量的影响。研究结果表明:干旱胁迫明显影响花生幼苗叶片叶绿素合成,降低叶绿素含量;降低叶片净光合速率(Pn)、蒸腾速率(Tr)和气孔导度(Gs),提高胞间CO2浓度(Ci);降低叶片生长素(IAA)、赤霉素(GA)和玉米素核苷(ZR)含量,提高脱落酸(ABA)含量。COR浸种可明显缓解干旱胁迫对花生幼苗生理功能的不良影响,提高干旱胁迫条件下叶片叶绿素含量、Pn、Tr和Gs,降低Ci,提高叶片IAA、GA和ZR含量,降低ABA含量。在正常水分条件下,COR也可明显改善花生幼苗叶片光合特性和内源激素水平。The effects of coronatine（COR）on photosynthetic performance and endogenous hormones contents of peanut seedling leaves under drought stress simulated by PEG were systematically studied.This research was conducted in solar greenhouse and‘Lu Hua 11＇was taken as experimental material.The results showed that drought stress significantly affected chlorophyll synthesis and reduced chlorophyll contents,reduced Pn,Tr and Gs,increased Ci,and reduced the contents of IAA,GA and ZR,increased ABA in leaves of peanut seedlings.COR soaking obviously alleviated the poor physiological function of peanut seedlings under drought stress,improved chlorophyll contents,Pn,Tr and Gs,reduced Ci,and improved the contents of IAA,GA and ZR,reduced ABA.Under normal water condition,COR also significantly improved photosynthetic charicteristics and endogenous hormone levels of peanut seedlings.

关 键 词：花生 干旱胁迫 冠菌素 叶片 光合性能 内源激素 

分 类 号：S565.2[农业科学—作物学]