| 赤霉素对粤西香根草种子发芽动态的影响 |
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| 引用本文： | 刘金祥,张莹,黎晓丹.赤霉素对粤西香根草种子发芽动态的影响[J].热带作物学报,2012,33(7):1272-1275. |
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| 作者姓名： | 刘金祥 张莹 黎晓丹 |
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| 作者单位： | 1. 湛江师范学院热带草业科学研究所,广东湛江,524048
2. 湛江师范学院热带草业科学研究所,广东湛江524048;甘肃农业大学草业学院 草业生态系统教育部重点实验室 中-美草地畜牧业可持续发展研究中心 甘肃兰州 730070 |
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| 基金项目： | 教育部留学回国人员科研启动基金（No. 20091001）；广东高校边缘热带特色植物工程开发中心项目（GCZX-B1002）；湛江市科技攻关项目（No. 2009C3110014）。 |
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| 摘 要： | 采用100、200、300、400 mg/kg浓度的赤霉素（GA3）溶液，分别对7~12月采集的粤西香根草种子浸种处理8 h，研究不同浓度赤霉素处理对不同月份的粤西香根草种子发芽动态的影响。结果表明：7~10月采集的粤西香根草种子的发芽势、发芽率和发芽指数逐渐增加，而后11、12月的香根草种子则呈下降趋势；赤霉素浓度为100~400 mg/kg时均可促进香根草种子的萌发，其中100 mg/kg赤霉素处理10月的粤西香根草种子，其发芽势、发芽率和发芽指数最高，分别为12.00％、14.00％和15.51，但移栽成活率低。旨在为提高香根草种子的发芽率提供依据。
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| 关 键 词： | 粤西香根草 赤霉素 种子 发芽率 |
Effect of GA3 Treatments on Seed Germination Dynamics of Natural Vetiver Grass in Western Guangdong Province |
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| LIU Jinxiang,ZHANG Ying and LI Xiaodan.Effect of GA3 Treatments on Seed Germination Dynamics of Natural Vetiver Grass in Western Guangdong Province[J].Chinese Journal of Tropical Crops,2012,33(7):1272-1275. |
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| Authors: | LIU Jinxiang ZHANG Ying and LI Xiaodan |
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| Institution: | Institute of Tropical Pratacultural Science, Zhanjiang Normal College;College of Pratacultural Science, Gansu Agricultural University; Key Laboratory of Grassland Ecosystem, Ministry of Education; Sino-U. S. Center for Grazing land Ecosystem Sustainability;Institute of Tropical Pratacultural Science, Zhanjiang Normal College |
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| Abstract: | The vetiver seeds of western Guangdong harvested in July-December were immersed in gibberellin (GA3)solution with concentrations of 100, 200, 300 and 400 mg/kg respectively for 8 hours. The results showed that the germination energy, germination rate and germination index gradually increased from July to October, and decreased from November to December. The GA3 might help the germination of vetiver seeds with the concentration of 100 to 400 mg/kg. The highest germination energy, germination rate and germination index of vetiver seeds, 12.00%, 14.00%, 15.51%, respectively, were found for treatment with the concentration of 100 mg/kg of GA3 in October. But the transplanting survival rate for the Treatment was the lowest. |
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| Keywords: | Vetiveria zizanioides Gibberellin(GA3) Seed Germination rate |
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