| 川党参传粉效率的研究 |
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| 引用本文： | 李今. 川党参传粉效率的研究[J]. 安徽师范大学学报(自然科学版), 2001, 24(3): 254-255,260 |
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| 作者姓名： | 李今 |
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| 作者单位： | 湖北师范学院生物系, |
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| 基金项目： | 国家自然科学基金;39391500; |
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| 摘 要： | 药用植物川党参Codonopsis tangshen Oliv.在自然授粉下结实率约为7．5％，但其花柱的授粉率高达79％，为结实率的10．5倍。柱头上的平均花娄量为5－16个，但多数为来自自花的花粉，散粉期花粉活力高，从不同处理下结实率实验看，川党参的有性繁殖主要依靠异花授粉，其自花授粉的结实率为1．7％，作者认为，在影响结实率的诸多因素中，异花授粉的效率以及植物对异花授粉的领带程度是重要因素。
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| 关 键 词： | 川党参 传粉效率 结实率 自花授粉 异花授粉 种群生物学 有性生殖 |
| 文章编号： | 1001-2443(2001)03-0254-02 |
POLLINATION EFFICIENCY IN CODONOPSIS TANGSHEN Oliv |
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| LI Jin. POLLINATION EFFICIENCY IN CODONOPSIS TANGSHEN Oliv[J]. Journal of Anhui Normal University(Natural Science Edition), 2001, 24(3): 254-255,260 |
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| Authors: | LI Jin |
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| Abstract: | The pollination biology of Codonopsis tangshen has been studied. Its seed set was 7.5% in natural conditions, while the pollination rates were high to 79%,10.5 times of its seed set. The mean number of pollen grains per stigma ranged from 5 to 16, most of them being from self-pollination. The pollen viability was strong in the pollen period. The breeding system of Codonopsis tangshen was dominantly xenogamous, and autogamy was about 1.7%. We consider that the limitation and dependence of xenogamy are important factors among the factors influencing seed set. |
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| Keywords: | Codonopsis tangshen Oliv pollination rates seed set |
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