玫瑰与黄刺玫自然越冬抗寒性比较  

Comparison of Cold Resistance of Rosa rugosa and R.xanthina During Natural Overwintering

作　　者：王成[1] 庄得凤 杜晓艳[2] 孙晓艳 WANG Cheng;ZHUANG Defeng;DU Xiaoyan;SUN Xiaoyan(College of Life Science and Food Engineering,Inner Mongolia Minzu University,Tongliao,Inner Mongolia 028000;Agricultural College,Inner Mongolia Minzu University,Tongliao,Inner Mongolia 028000)

机构地区：[1]内蒙古民族大学生命科学与食品学院,内蒙古通辽028000 [2]内蒙古民族大学农学院,内蒙古通辽028000

出　　处：《中国农学通报》2024年第1期46-51,共6页Chinese Agricultural Science Bulletin

基　　金：内蒙古民族大学博士启动基金项目“观赏月季自然越冬抗寒及抗抽干生理机制研究”(BS561)。

摘　　要：为比较玫瑰与黄刺玫自然越冬抗寒性响应机制,在植株越冬期间(2020年10月—2021年3月),以玫瑰与黄刺玫的当年生枝条为试材,测定分析7个生理生化指标,对两者进行抗寒性分析比较,研究其抗寒生理机理。结果表明,在整个越冬期间,7个指标在玫瑰与黄刺玫枝条内变化趋势一致;丙二醛(MDA)、可溶性糖含量在玫瑰枝条内高于黄刺玫;玫瑰枝条的电导率变化幅度大于黄刺玫;含水量、可溶性蛋白含量、过氧化物酶(POD)活性3个指标黄刺玫均高于玫瑰;黄刺玫枝条内超氧化物歧化酶(SOD)活性在抗冻阶段高于玫瑰。结合隶属函数综合评价,在自然越冬前期,玫瑰的可溶性糖、可溶性蛋白、SOD起主要抗冷作用,在整个越冬期间,玫瑰可溶性糖含量始终持续较高,起到保护作用;黄刺玫通过可溶性蛋白和SOD适应低温,在自然越冬后期,POD含量升高,SOD含量始终维持较高水平,共同在抗冻阶段起到保护作用。在玫瑰与黄刺玫自然越冬期间,黄刺玫的抗寒性强于玫瑰,黄刺玫通过POD、SOD抵御低温,玫瑰通过可溶性糖抵御低温。To compare the response mechanism of the cold resistance of Rosa rugosa and R.xanthina during natural overwintering,the current year branches of R.rugosa and R.xanthina during overwintering period were selected as materials(October 2020 to March,2021),7 physiological and biochemical indexes were measured and analyzed to explore its cold-resistance physiological mechanism.The results showed that the change of 7 indexes was consistent in the branches of R.rugosa and R.xanthina;MDA and soluble sugar content of R.rugosa was higher than that of R.xanthina;the change range of electrical conductivity in R.rugosa branches was higher than that in R.xanthina;water content,soluble protein content and POD activity of R.xanthina was higher than that of R.rugosa;SOD activity of R.xanthina was higher than that of R.rugosa at antifreeze stage.With comprehensive evaluation results of membership function method,soluble sugar,soluble protein and SOD of R.rugosa played a major role in cold resistance in the early natural overwintering stage;during the whole overwintering period,the content of soluble sugar was always high,played a protective role;R.xanthina adapted to low temperature through soluble protein and SOD,in the late natural overwintering stage,POD content increased and SOD maintained a high content,played a protective role at antifreeze stage.During natural overwintering period of R.rugosa and R.xanthina,cold resistance was higher in R.xanthina than R.rugosa,R.xanthina resisted low temperature through POD and SOD,and R.rugosa resisted low temperature through soluble sugar.

关 键 词：玫瑰 黄刺玫 自然越冬 抗寒生理机制 

分 类 号：S685.12[农业科学—观赏园艺]