贮藏温度和含水量对党参种子活力的影响  

Effects of Storage Temperature and Water Content on Seed Vigor of Codonopsis pilosula

作　　者：晋凡生[1] 张彦琴[1] 梁改梅[1] 王君杰 乔月 牛铁泉[4] 常建忠[1] 高秀萍[1,2] JIN Fansheng;ZHANG Yanqin;LIANG Gaimei;WANG Junjie;QIAO Yue;NIU Tiequan;CHANG Jianzhong;GAO Xiuping(Arid Farming Research Center,Shanxi Academy of Agricultural Sciences,Key Laboratory of Organic Dry Farming in Shanxi Province,Taiyuan 030031,China;Key Laboratory of Crop Gene Resources and Germplasm Enhancement on Loess Plateau,Ministry of Agriculture,Taiyuan 030031,China;Institute of Agricultural Resources&Economy,Shanxi Academy of Agricultural Sciences,Taiyuan 030006,China;College of Horticulture,Shanxi Agricultural University,Taigu Shanxi 030801,China)

机构地区：[1]山西省农业科学院旱地农业研究中心,有机旱作山西省重点实验室,太原030031 [2]农业部黄土高原作物基因资源与种质创制重点实验室,太原030031 [3]山西省农业科学院农业资源与经济研究所,太原030006 [4]山西农业大学园艺学院,山西太谷030801

出　　处：《种子》2020年第7期6-11,共6页Seed

基　　金：山西省农业科学院生物育种工程项目(17 yzgc 118-2;17 yzgc 118-1);山西省回国留学人员科研资助项目(2013-147);山西省科技基础条件平台建设项目(2014091017)。

摘　　要：测定了不同含水量(6.17%~1.52%)的党参种子在-4℃、0℃、4℃和常温条件下贮藏24个月后活力指标、抗氧化酶活性与相对电导率的变化,研究温度和含水量对贮藏期间种子活力的影响。结果表明,经过4^-4℃低温和常温贮藏后,党参种子活力呈不同程度降低,含水量低的种子活力下降缓慢。常温贮藏24个月后,含水量在3.36%~1.52%区间的种子仍保持较高的活力,发芽率、发芽势分别维持在90%和60%左右。在4^-4℃低温下贮藏24个月后,含水量6.17%~1.52%的种子活力均维持在较高水平,但以5.13%~1.52%含水量的种子活力更高。贮藏24个月期间,超氧化物歧化酶(SOD)以及过氧化氢酶(CAT)活性与种子活力的变化呈基本一致的趋势,但相对电导率与种子活力并不相关。本试验结果表明,党参种子在超干条件下常温贮藏,至少可在2年内保持良好的活力,最适含水量为3.36%~1.52%。In this paper,the relative vigor index(RVI),antioxidant enzyme activity and relative conductivity of Codonopsis pilosula seeds with different water content(6.17%—1.52%)were measured at-4℃,0℃,4℃and room temperature for 24 months after storage,and the effects of temperature and water content on seed activity during storage were also studied.The results showed that after storage at 4—-4℃and room temperature,the seed vigor of C.pilosula decreased in different degrees,and the vigor of seed with low water content decreased slowly.After stored at room temperature for 24 months,the seeds with water content between 3.36%and 1.52%still maintained high seed vigor,and the germination rate and germination potential remained at about 90%and 60%respectively.After 24 months of storage at 4—-4℃,the vigor of the seeds with 6.17%—1.52%%water content remained at a high level,but that of 5.13%—1.52%water content was much higher.During 24 months of storage,the activity of superoxide dismutase(SOD)and catalase(CAT)was basically consistent with the change of seed vigor,but the relative conductivity was not related to the seed vigor.The results showed that C.pilosula seeds stored at room temperature under ultra-dry conditions could maintain good vitality for at least 2 years,and the optimal water content of the seeds was 3.36%—1.52%.

关 键 词：党参 贮藏温度 种子含水量 种子活力 抗氧化酶 

分 类 号：S567.53[农业科学—中草药栽培]