| 呼伦贝尔草原异质生境羊草有性生殖及其生物量分配的研究 |
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| 引用本文： | 周婵,张卓,郭平,白丹,杨允菲,李建东.呼伦贝尔草原异质生境羊草有性生殖及其生物量分配的研究[J].草原与草坪,2011(5):16-20. |
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| 作者姓名： | 周婵 张卓 郭平 白丹 杨允菲 李建东 |
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| 作者单位： | 呼伦贝尔草原生态系统国家野外科学观测研究站;辽宁大学生命科学院;沈阳大学生物与环境工程学院;东北师范大学草地研究所/植被生态科学教育部重点实验室 |
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| 基金项目： | 国家自然科学基金项目(30900117,30770397);呼伦贝尔草原生态系统国家野外科学观测研究站开放课题(2010-09);辽宁省教育厅科研项目(L2010149);沈阳市人才资源开发专项资金;辽宁大学“211工程”三期建设项目-现代生物技术与东北种质资源开发利用项目资助 |
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| 摘 要： | 在呼伦贝尔草原典型草原的栗钙土围栏草地、草甸草原暗栗钙土围栏草地和草甸草原暗栗钙土割草地等3个异质生境对羊草的有性生殖特征和生物量分配进行研究。结果表明,各个生境羊草生殖分蘖株的有性生殖和生物量分配的指标在一定范围变化,变异系数为8.234%～84.237%。典型草原栗钙土围栏场羊草生殖分配Ⅰ小于草甸草原暗栗钙土围栏场...
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| 关 键 词： | 呼伦贝尔草原 羊草 有性生殖 生物量分配 |
Sexual reproduction and biomass allocation of Leymus chinensis in Hulunber Steppe |
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| ZHOU Chan,ZHANG Zhuo,GUO Ping,BAI Dan,YANG Yun-fei,LI Jian-dong.Sexual reproduction and biomass allocation of Leymus chinensis in Hulunber Steppe[J].Grassland and Turf,2011(5):16-20. |
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| Authors: | ZHOU Chan ZHANG Zhuo GUO Ping BAI Dan YANG Yun-fei LI Jian-dong |
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| Institution: | 1.Hulunber Grassland Ecosystem Observation and Research Station;Beijing 100081; 2.College of Life Science,Liaoning University,Shenyang 110036,China;3.College of Biology and Environment Engineering,Shenyang University,Shenyang,110044,China;4.Institute of Grassland Science,Northeast Normal University,Key Laboratory for Vegetation Ecology,Ministry of Education, P.R.China,Changchun 130024,China) |
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| Abstract: | Sexual reproduction and biomass allocation of Leymus chinensis were studied under chestnut soil of typical steppe with fence,dark chestnut soil of meadow steppe with fence and dark chestnut soil of cutting meadow steppe in Hulunber Steppe.The results showed that indices of sexual reproduction and biomass allocation were changed at a certain range.Differentiation coefficients of these indices were 8.234~84.237%.Reproductive allocationⅠof L.chinensis under chestnut soil of typical steppe with fence was less than that under dark chestnut soil of meadow steppe with fence,but reproductive allocationⅡ and reproductive allocation Ⅲ were more than those under dark chestnut soil of meadow steppe with stockyard.Reproductive allocationⅠ,Ⅱ and Ⅲ of L.chinensis under dark chestnut soil habitat of meadow steppe with fence were more than those under dark chestnut soil of cutting meadow steppe.Multiple comparison analysis indicated that characteristics of sexual reproduction and ratio of biomass allocation among three habitats were significant difference.Relationship analysis indicated that ratio of biomass allocation between spike and stem,sheath were significantly negatively correlative.Sexual reproduction and biomass allocation of L.chinensis in difference soil habitats had plasticity.At the same time,reproductive tiller of L.chinensis restricted resource allocation between nutrition and reproduction apparatuses when resource was limited. |
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| Keywords: | Hulunber Steppe Leymus chinensis sexual reproduction biomass allocation |
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