草果种子萌发特性研究

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英文篇名：The Germination Characteristics of Amomumtsao-ko Seed 作者：宋美芳 ; 唐德英 ; 李宜航 ; 李光 ; 李学兰 ; 马小军 英文作者：Song Meifang;Tang Deying;Li Yihang;Li Guang;Li Xuelan;Ma Xiaojun;Key Laboratory of Dai and Southern Medicine of Xishuangbanna Dai Autonomous Prefecture, Institute of Medicinal Plant Development Yunnan Branch, Chinese Academy of Medical Sciences & Peking Union Medical College;Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education,Institute of Medical Plant, Chinese Academy of Medical Sciences, Peking Union Medical College; 关键词：草果种子 ; 萌发特性 ; 发芽抑制物 ; 萌发条件 ; 发芽率 英文关键词：Amomumtsao-ko seed;;germination characteristic;;germination inhibitor;;germination condition;;germination rate 中文刊名：ZNTB 英文刊名：Chinese Agricultural Science Bulletin 机构：中国医学科学院北京协和医学院药用植物研究所云南分所西双版纳州傣药南药重点实验室;中国医学科学院北京协和医学院药用植物研究所中草药物质基础与资源利用教育部重点实验室; 出版日期：2019-02-15 出版单位：中国农学通报 年：2019 期：v.35;No.512 基金：国家科技重大专项“中药材种子种苗和种植(养殖)标准平台项目子课题——云木香、桑寄生、草果种子质量标准研究”(2012ZX09304006) 语种：中文; 页：ZNTB201905012 页数：5 CN：05 ISSN：11-1984/S 分类号：76-80

摘要

探讨草果种子休眠的原因及其萌发的最佳条件,为草果种子的质量检验方法及提高播种育苗成功率提供参考。浸种称重法测定种皮透水性;生物鉴定法检测发芽抑制物;设置不同前处理、不同光照和温度、不同发芽床以及不同贮藏方法等对草果种子进行发芽试验,测定发芽率。结果表明:草果种子吸水率较低,吸水67 h仅达40%左右;种子水浸提液对白菜种子萌发具有明显的抑制作用;经湿沙层积处理30天后的种子,其发芽率和发芽整齐度明显提高,较未处理种子发芽率提高近50%;以纱布作发芽床,30/20℃变温、12 h光照条件下种子发芽率最高,达54.75%。草果种子中存在发芽抑制物可能是导致其休眠的主要原因之一;湿沙层积处理可有效降解发芽抑制物,是草果种子最佳前处理方法;以纱布作发芽床,12 h光照、30/20℃变温条件是草果种子萌发的最适宜条件;草果种子以湿沙进行贮藏为好。
        To provide a reference for quality test and improving the success rate of sowing and seedling of Amomumtsao-ko seed, we investigated its dormancy causes and optimum germination condition. The water permeability was measured by weighing method after soaking seeds; the germination inhibitor was detected by biological assay; the germination test was conducted under the following conditions: different preliminary treatments, different light and temperature, different germinating beds as well as different storage methods, to measure the germination rate. The results showed that Amomumtsao-ko seed had low water absorption, only40% after 67 h; the aqueous extracts of Amomumtsao-ko seed inhibited the germination of cabbage seeds obviously; the germination rate and uniformity of the seeds treated by wet sand lamination for 30 d were improved significantly and the germination rate increased by 50% comparing with the untreated seeds; using gauze as the germination bed, Amomumtsao-ko seed had the highest germination rate under 12 h light and 30/20℃ alternating condition, up to 54.75%. The germination inhibitors in the seed might be one of the main causes of dormancy; wet sand lamination treatment could effectively degrade the germination inhibitors,therefore, it was the optimum pretreatment method. 12 h light, 30/20℃ alternating condition and gauze as the germination bed is the optimum germination condition; wet sand storage is the optimum storage method.

引文

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