LI Chang-long,LI De-lu,GUO Shu-jiang,et al.Effect of Individual Growth Differences of Limonium aureum on Size-dependent Reproductive Allocation[J].Northern Horticulture,2015,39(06):139-143.[doi:10.11937/bfyy.201506039]
黄花补血草个体差异对生殖分配的影响
- Title:
- Effect of Individual Growth Differences of Limonium aureum on Size-dependent Reproductive Allocation
- 关键词:
- 黄花补血草（Limonium aureum）; 个体差异; 生殖分配
- 文献标志码:
- A
- 摘要:
- 以平沙地黄花补血草种群为研究对象，以生殖枝冠幅和高度为依据标定植株大小，研究了其个体生长差异对各生殖构件的生物量、生殖配置的影响以及其相关性。结果表明：各生殖构件生物量分别与生殖枝冠幅和高度之间存在显著或极显著的线性相关，其中生殖枝生物量增加最为显著，花生物量次之，二者占绝对优势，种子生物量增加较小，其增加比值约为6.7∶5.3∶1。其各生殖构件的生殖分配与生殖枝冠幅和高度之间存在显著的对数相关，其中与生殖枝分配呈负的对数相关，而与花和种子分配呈正的对数相关，生殖枝与花和种子在生殖资源分配方面存在相互制约的关系。其生殖生长（冠幅、株高）、各生殖构件（生殖枝、花、种子）生物量以及其生殖分配各要素之间均呈显著或极显著相关（除生殖枝高与各生殖构件分配之间相关性不显著），其中生殖枝分配与其它各要素之间呈显著或极显著的负相关，说明生殖枝配置与其它各要素之间存在相互制约关系。
- Abstract:
- With population of Limonium aureum in flat sandy land as research object,the influences and dependencies of individual growth differences on reproductive biomass and reproductive allocation of reproductive shoots，flowers and seeds in Limonium aureum were studied by standardizating its size according to canopy and height in this paper.The results showed that,there were significant or very significant linear correlations between the biomass of the reproductive modules and the change of the canopy and height.Among them，the productive shoots increased significantly and the flowers took second place，which took up the absolute advantage，but the seeds increased slightly，and the biomass ratio of the reproductive modules were 6.7∶5.3∶1.There were significant logarithmic correlations between the allocation of the reproductive modules and the change of the canopy and height，the allocation of the reproductive shoots was negative logarithmic relationship，and the allocations of the flowers and seeds were positive logarithmic correlation.It also showed that the reproductive shoots had mutual restriction with the flowers and seeds in the reproductive resource allocation.there were many significant or very significant correlations among the reproductive growth including the canopy and height，the reproductive biomass including the reproductive shoots，flowers and seeds and the reproductive allocation including the reproductive shoots，flowers and seeds，but the reproductive shoots allocation had not significant correlation with its height.And the reproductive shoots allocation had a negative correlation with other elements，which showed that the reproductive shoots allocation had mutual restriction with other elements.
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备注/Memo
第一作者简介：李昌龙（1974-），男，甘肃永靖人，硕士，副研究员，现主要从事生物多样性与退化系统植被恢复等研究工作。E-mail:lichlong1998@163.com. 基金项目：甘肃省技术研究与开发专项资助项目（1207TCYA048）；甘肃省创新群体资助项目（145RJIA335）；甘肃省创新团队资助项目（1207TTCA002）；甘肃省青年科技基金资助项目（1308RJYA081）。