松嫩平原不同生育期虎尾草无性系构件生长与生物量分配

doi:10.13287/j.1001-9332.201803.001

应用生态学报 ›› 2018, Vol. 29 ›› Issue (3): 805-810.doi: 10.13287/j.1001-9332.201803.001

松嫩平原不同生育期虎尾草无性系构件生长与生物量分配

田雪, 李海燕, 杨允菲^*

东北师范大学草地科学研究所、植被生态科学教育部重点实验室, 长春 130024

收稿日期:2017-07-21 出版日期:2018-03-18 发布日期:2018-03-18
通讯作者: * E-mail: yangyf@nenu.edu.cn
作者简介:田雪, 女, 1993年生, 硕士研究生. 主要从事种群生态学研究. E-mail: tianx136@nenu.edu.cn
基金资助:
本文由国家自然科学基金项目(31472134,31670427,31672471)、国家重点研发计划项目(2016YFC0500602)和吉林省科技厅自然科学基金项目(20170101150JC)资助

Module growth and biomass allocation of Chloris virgate clone at different growth stages in Songnen Plain, China.

TIAN Xue, LI Hai-yan, YANG Yun-fei^*

Ministry of Education Key Laboratory for Vegetation Ecology, Institute of Grassland Science, Northeast Normal University, Changchun 130024, China

Received:2017-07-21 Online:2018-03-18 Published:2018-03-18
Contact: * E-mail: yangyf@nenu.edu.cn
Supported by:
This work was supported by the National Natural Science Foundation of China (31472134, 31670427, 31672471), the National Key Research & Development Program of China (2016YFC0500602), and the Natural Science Foundation of Science and Technology Department of Jilin Province (20170101150JC)

摘要/Abstract

摘要： 以松嫩平原不同生育期的虎尾草无性系为研究对象,分别在虎尾草无性系拔节期和完熟期进行大样本取样,并对其地上、地下各构件的数量性状及生物量分配进行统计分析,研究虎尾草在不同生育期的生长特性及生长策略.结果表明: 虎尾草株高、总根长、总根表面积、根体积、地上生物量、地下生物量、总生物量在两个生育期之间均存在显著差异.在两个生育期,地上、地下生物量分配与总生物量呈显著幂函数异速生长关系.在拔节期,总生物量与分株数、总根长、总根表面积和根体积呈显著线性同速生长关系;而在完熟期,均呈显著幂函数异速生长关系.虎尾草无性系在不同生育期存在着不同的生长策略,在拔节期主要采取的是无性系外部空间的优先扩展策略,而在完熟期主要采取的是无性系内、外部空间兼顾的补充和扩展策略.

关键词: 同速生长, 生物量分配, 拔节期, 虎尾草, 构件, 异速生长, 完熟期

Abstract: The growth characteristic and strategies of Chloris virgate at different growth stages were examined in Songnen Plain by analyzing the quantitative characters and biomass allocation of aboveground and belowground parts at shooting and ripening stages in C. virgate population, with a large amount of sampling. The results showed that height, total root length, total root surface area, root volume, aboveground biomass, belowground biomass, and total biomass were significantly different between the two growth stages. There was power allometric relationship between total biomass and biomass allocation of aboveground and belowground, respectively. At shooting stage, there was a significant linear isometric growth between the total biomass and the number of ramets, total root length, total root surface area and root volume, but there was a power allometric growth at ripening stage. C. virgate clone showed different growth strategies under different growth stages, with a priority expansion strategy of clonal outer space at shooting stage and a complementary and expansive strategy in the inner and outer space of the clones at ripening stage.

Key words: shooting stage, Chloris virgate, isogony growth, biomass allocation, module, ripening stage, allometry growth

田雪, 李海燕, 杨允菲. 松嫩平原不同生育期虎尾草无性系构件生长与生物量分配[J]. 应用生态学报, 2018, 29(3): 805-810.

TIAN Xue, LI Hai-yan, YANG Yun-fei. Module growth and biomass allocation of Chloris virgate clone at different growth stages in Songnen Plain, China.[J]. Chinese Journal of Applied Ecology, 2018, 29(3): 805-810.

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松嫩平原不同生育期虎尾草无性系构件生长与生物量分配

Module growth and biomass allocation of Chloris virgate clone at different growth stages in Songnen Plain, China.

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