S–腺苷甲硫氨酸对黄瓜断根扦插苗生长及生理代谢的影响  

Effect of S-adenosylmethionine on Growth and Physiological Metabolism of Cucumber Cutting Seedlings

作　　者：刘鑫[1] 李晓彤 荆鑫[1] 王硕硕[1] 巩彪[1] 魏珉[1] 史庆华[1] LIU Xin;LI Xiaotong;JING Xin;WANG Shuoshuo;GONG Biao;WEI Min;SHI Qinghua(College of Horticulture Science and Engineering,Shandong Agricultural Universit;State Key Laboratory of Crop Biolog;Scientific Observation and Experimental Station of Environment-Controlled Agricultural Engineering in Huang-Huai-Hai Region,Ministry of Agriculture,Tai＇ an,Shandong 271018,China)

机构地区：[1]山东农业大学园艺科学与工程学院作物生物学国家重点实验室农业部黄淮海设施农业工程科学观测实验站,山东泰安271018

出　　处：《园艺学报》2018年第8期1513-1522,共10页Acta Horticulturae Sinica

基　　金："十三五"国家重点研发项目(2017YFD0201600);山东省现代农业产业技术体系项目(SDAIT-05-05);山东省农业科学院农业科技创新工程项目(CXGC2016B06)

摘　　要：以‘津研4号’黄瓜为试验材料,研究了S–腺苷甲硫氨酸(SAM)对断根扦插后黄瓜苗期根系生长、植株生长和生理代谢的影响。结果表明,断根幼苗基部用50μmol·L-1 SAM溶液浸泡5 min,能显著促进扦插苗根系的生长发育、叶绿素的积累、光合速率的增强以及提高植株对N、P、K的吸收能力,促进幼苗的生长。进一步分析表明,SAM处理增加了黄瓜下胚轴内多胺和生长素的积累及其相关基因的表达,可能是SAM促进黄瓜根系再生和幼苗生长发育的机理。＇Jinyan 4＇cucumber was used as experimental material to study the effect of exogenous S-adenosylmethionine（SAM）on root generation,seedling growth and physiological metabolism. The results showed that the root growth,chlorophyll accumulation,photosynthetic rate were significantly improved in cucumber cutting seedlings treated with 50 μmol·L^（-1） SAM solution for 5 min,and N,P,K contents and cucumber seedlings growth were promoted. Further investigations indicated that SAM treatment up-regulated the expression of polyamines and auxin-related genes as well as polyamine and auxin accumulation in cucumber hypocotyls,which was the possible mechanism of SAM promoting root regeneration and plant growth of cucumber cutting seedlings.

关 键 词：黄瓜 S–腺苷甲硫氨酸 扦插 根系发生 生理代谢 

分 类 号：S642.2[农业科学—蔬菜学]