| 羊草种群各类地下芽的发生、输出与地上植株的形成、维持动态 |
| |
| 引用本文： | 张继涛,徐安凯,穆春生,王俊峰.羊草种群各类地下芽的发生、输出与地上植株的形成、维持动态[J].草业学报,2009,18(4):54-60. |
| |
| 作者姓名： | 张继涛 徐安凯 穆春生 王俊峰 |
| |
| 作者单位： | 1. 东北师范大学草地科学研究所,吉林省生态恢复与生态系统管理重点实验室,植被生态教育部重点实验室,吉林,长春130024
2. 吉林省农业科学院,吉林,长春,130124 |
| |
| 基金项目： | 教育部重点项目(106063);;吉林省科技发展计划项目(20080563);;国家科技支撑项目(2008BADB3B09);;国家自然科学基金(30471231)资助 |
| |
| 摘 要： | 羊草地下芽库中各类型芽及所形成子株和母株的季节动态变化研究结果表明，当年返青母株是由上一年母株形成的８０％的分蘖芽与分蘖芽子株，１５％的根茎顶芽与根茎顶芽子株，以及５％ 根茎节芽和根茎节芽子株组成的，分蘖芽与分蘖芽子株是返青母株的主体。随着返青母株的生长，根茎顶芽是在５月２０日早于分蘖芽和根茎节芽１个月发生，并首先呈水平生长方式远离母株，占据生态位；在６月２０日水平根茎顶芽开始向地面弯曲，输出子株的同时，分蘖芽和根茎节芽开始形成，并输出子株。羊草母株以产生低比例根茎芽和高比例分蘖芽的扩展和丛生联合生长方式，以年内和年间的芽、子株、母株之间的不断循环，年复一年地维持着种群的无性繁殖机制。高降水年份可显著地增加地下芽库各类型芽数量，从而使地上子株和母株密度增加。
|
| 关 键 词： | 羊草 芽类型 母株和子株类型 密度和比例 季节动态 种群维持 |
| 收稿时间： | 1900-01-01; |
Occurrence and output of all types of belowground buds of Leymus chinensis and the dynamics of formation and maintenance of aboveground shoots |
| |
| ZHANG Ji-tao,XU An-kai,MU Chun-sheng,WANG Jun-feng.Occurrence and output of all types of belowground buds of Leymus chinensis and the dynamics of formation and maintenance of aboveground shoots[J].Acta Prataculturae Sinica,2009,18(4):54-60. |
| |
| Authors: | ZHANG Ji-tao XU An-kai MU Chun-sheng WANG Jun-feng |
| |
| Affiliation: | 1.Key Laboratory of Ecological Restoration and Ecosystem Management of Jilin Province;Key Laboratory for Vegetation Ecology;Ministry of Education;P.R.;Institute of Grassland Science;Northeast Normal University;Changchun 130024;China;2.The Jilin Province Academy of Agricultural Science;Changchun 130124;China |
| |
| Abstract: | Seasonal variations of densities of all types of buds,parent and daughter shoots of Leymus chinensis were investigated.The origin of current year parent shoots was 80% from shoot buds and daughter axillary shoots,15% from apical rhizome buds and daughter apical rhizome shoots,and 5% from axillary rhizome buds and daughter axillary rhizome shoots,from total buds and shoots formed during previous years.When parent shoots were growing,apical rhizome buds began to generate and spread horizontally to occupy nich... |
| |
| Keywords: | Leymus chinensis bud types parent and daughter shoot types density and proportion seasonal variations maintenance of population |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《草业学报》浏览原始摘要信息 |
|
点击此处可从《草业学报》下载全文 |
