| 濒危植物小花木兰种子初步研究 |
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| 引用本文： | 王立龙,王广林,刘登义.濒危植物小花木兰种子初步研究[J].安徽师范大学学报(自然科学版),2005,28(1):72-75. |
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| 作者姓名： | 王立龙 王广林 刘登义 |
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| 作者单位： | 安徽师范大学,生命科学学院,安徽,芜湖,241000;安徽师范大学,生命科学学院,安徽,芜湖,241000;皖西学院,生物系,安徽,六安,237000 |
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| 基金项目： | 国家自然科学基金
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安徽省自然科学基金
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安徽省重点实验室基金 |
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| 摘 要： | 通过扫描电镜观察小花木兰的种子,发现它的种皮木质化程度较高,种子在自然状态下难于萌发;用四唑染色法检测了保存方法不同的小花木兰(Magnolia sieboldii)种子的生活力,冷湿适宜能使它保持较长时间的活力;对不同处理方法的种子萌发率进行比较分析,沙藏冷湿处理翌年春播萌发率良好;调查了自然条件下的种子库动态后显示:种子在自然状态下散布后损失大;加上种子质量差,自身的结构让它萌发困难,造成了自然条件下小花木兰林下幼苗极其稀少,天然更新不足,使它生存受到严重威胁.
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| 关 键 词： | 小花木兰 种皮特征 萌发率 种子库 |
| 文章编号： | 1001-2443(2005)01-0072-04 |
| 修稿时间： | 2004年7月30日 |
PRELIMINARY STUDIES ON SEED OF ENDANGERED MAGNOLIS SIEBOLDII |
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| WANG Li-long,WANG Guang-lin,LIU Deng-yi.PRELIMINARY STUDIES ON SEED OF ENDANGERED MAGNOLIS SIEBOLDII[J].Journal of Anhui Normal University(Natural Science Edition),2005,28(1):72-75. |
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| Authors: | WANG Li-long WANG Guang-lin LIU Deng-yi |
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| Abstract: | Seeds of Magnolia sieboldii were studied with scanning electronic microscope, its wooden seed coat makes its low germination;Based on the method of TCC,different seed vitality were assessed,the results indicated that cold and mild conditions could keep seed vitality well; In different deposition, seed germination was studied, we found it kept well with mild sand in cold condition;Dynamic of its seed bank were investigated by random sampling methods in natural environment; many seeds lost as dispersal. On the other hand, poor seed quality and its infancy was absent, which made its population development get threatened. Some effect measures were proposed for seed protection. |
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| Keywords: | Magnolia sieboldii seed coat seed germination seed bank |
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