| 决明种子硬实及萌发特性研究 |
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| 引用本文： | 张春平,何平,杜丹丹,喻泽莉,韦品祥,胡世俊.决明种子硬实及萌发特性研究[J].中草药,2010,41(10):1700-1704. |
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| 作者姓名： | 张春平 何平 杜丹丹 喻泽莉 韦品祥 胡世俊 |
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| 作者单位： | 西南大学生命科学学院 三峡库区生态环境教育部重点实验室，重庆市三峡库区植物生态与资源重点实验室，重庆 400715;西南大学生命科学学院 三峡库区生态环境教育部重点实验室，重庆市三峡库区植物生态与资源重点实验室，重庆 400715;西南大学生命科学学院 三峡库区生态环境教育部重点实验室，重庆市三峡库区植物生态与资源重点实验室，重庆 400715;中国科学院昆明植物研究所，云南 昆明 650204 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 目的通过对决明种子硬实和萌发特性的研究,找到打破种子硬实、提高种子萌发率的适宜条件。方法观察种子外部形态,对决明种子长宽、千粒质量、净度、硬实率、含水量和吸水率进行测定,通过研磨、预先冷冻和热水处理,找到破除种子硬实的方法,考察不同温度、不同质量浓度化学物质对种子萌发率的影响。结果决明种子含水量为10.43%,未经处理的种子吸水率为45.82%,经过研磨处理和浓硫酸处理的种子吸水率分别为154.2%、159.7%。经过98%浓硫酸处理20 min后的种子发芽率为99.8%,变温下(25℃1、4 h/15℃1、0 h)种子萌发率为98.7%,200 mg/L GA3和200 mg/L PEG处理后的萌发率分别为100%和98.9%,较高质量浓度的NNA和6-BA对种子萌发具有明显的抑制效应。结论种皮硬实是限制种子萌发的主要因素,98%的浓硫酸浸泡20 min可以较好地打破决明种子硬实,200 mg/L GA3和200 mg/L PEG能在短时间内显著提高种子的萌发率,最佳萌发温度为25℃,14 h/15℃,10 h。
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| 关 键 词： | 决明 种子硬实 吸水率 萌发率 |
| 收稿时间： | 2010/2/13 0:00:00 |
Study on hardness and germination characteristic of Cassia obtusifolia seeds |
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| ZHANG Chun-ping,HE Ping,DU Dan-dan,YU Ze-li,WEI Pin-xiang and HU Shi-jun.Study on hardness and germination characteristic of Cassia obtusifolia seeds[J].Chinese Traditional and Herbal Drugs,2010,41(10):1700-1704. |
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| Authors: | ZHANG Chun-ping HE Ping DU Dan-dan YU Ze-li WEI Pin-xiang and HU Shi-jun |
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| Affiliation: | Key Laboratory(Ministry of Education) of Eco-environments of Three Gorges Reservoir Region, Chongqing Key Laboratory of Plant Ecology and Resources Research for Three Gorges Reservoir Region, School of Life Sciences, Southwest University, Chongqing 400715, China;Key Laboratory(Ministry of Education) of Eco-environments of Three Gorges Reservoir Region, Chongqing Key Laboratory of Plant Ecology and Resources Research for Three Gorges Reservoir Region, School of Life Sciences, Southwest University, Chongqing 400715, China;Key Laboratory(Ministry of Education) of Eco-environments of Three Gorges Reservoir Region, Chongqing Key Laboratory of Plant Ecology and Resources Research for Three Gorges Reservoir Region, School of Life Sciences, Southwest University, Chongqing 400715, China;Key Laboratory(Ministry of Education) of Eco-environments of Three Gorges Reservoir Region, Chongqing Key Laboratory of Plant Ecology and Resources Research for Three Gorges Reservoir Region, School of Life Sciences, Southwest University, Chongqing 400715, China;Key Laboratory(Ministry of Education) of Eco-environments of Three Gorges Reservoir Region, Chongqing Key Laboratory of Plant Ecology and Resources Research for Three Gorges Reservoir Region, School of Life Sciences, Southwest University, Chongqing 400715, China;Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, China |
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| Abstract: | |
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| Keywords: | Cassia obtusifolia L seed hardness water absorption rate germination rate |
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