| 野古草(Arundinella hirta) 对水淹逆境的生殖响应 |
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| 引用本文： | 付天飞,曾波,叶小齐,孟金柳,张艳红,吴国平,卢立霞.野古草(Arundinella hirta) 对水淹逆境的生殖响应[J].西南师范大学学报(自然科学版),2005,30(2):325-328. |
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| 作者姓名： | 付天飞 曾波 叶小齐 孟金柳 张艳红 吴国平 卢立霞 |
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| 作者单位： | 西南师范大学,生命科学学院,重庆,400715;西南师范大学,三峡库区生态环境教育部重点实验室,重庆,400715;重庆市三峡库区植物生态与资源重点实验室,重庆,400715 |
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| 基金项目： | 国家自然科学基金资助项目(30440035). |
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| 摘 要： | 分析了嘉陵江边不同强度水淹后的1年生野古草个体的有性生殖和无性生殖数量特征，结果表明：野古草有性生殖植株的单株种子质量、粒数和生殖分配等随水淹强度增大而逐渐降低，高强度水淹后野古草没有进行有性生殖．在一定水淹范围内，表征野古草无性生殖的单株质量、分枝数随水淹强度的增大而呈增大的趋势，说明野古草无性生殖随水淹强度的增加呈增强的趋势．在周期性的自然水淹下，无性生殖是野古草适应自然的生殖方式．
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| 关 键 词： | 野古草 水淹 无性生殖 有性生殖 生殖分配 |
| 文章编号： | 1000-5471(2005)02-0325-04 |
| 修稿时间： | 2004年11月5日 |
The Reproductive Responses of Arundinella hirta Individual to Flooding |
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| FU Tian-fei,ZENG Bo,YE Xiao-qi,MENG Jin-liu,ZHANG Yan-hong,WU Guo-ping,LU Li-xia.The Reproductive Responses of Arundinella hirta Individual to Flooding[J].Journal of Southwest China Normal University(Natural Science),2005,30(2):325-328. |
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| Authors: | FU Tian-fei ZENG Bo YE Xiao-qi MENG Jin-liu ZHANG Yan-hong WU Guo-ping LU Li-xia |
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| Abstract: | The sexual and asexual reproductive features of graminoid species Arundinella hirta growing at riversides of Jialing River were analyzed. It was found that the seed weight and seed number per tiller and reproductive allocations of A. hirta were decreased with the intensity of flooding, and the plants growing at lowest elevations of banks subjected to intense flooding did not show sexual reproduction. The biomass, number of branches per tiller were increased with the flooding intensity, which implies that, contrary to sexual reproduction, asexual reproduction of A. hirta was enhanced by flooding. |
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| Keywords: | Arundinella hirta flooding asexual reproduction sexual reproduction reproductive allocation |
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