Analysis of Sexual Reproduction of Leymus chinensis with Different Leaf Colors under Heterogeneous Habitat

doi:10.11733/j.issn.1007-0435.2012.02.004

›› 2012, Vol. 20 ›› Issue (2): 213-220.DOI: 10.11733/j.issn.1007-0435.2012.02.004

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Analysis of Sexual Reproduction of Leymus chinensis with Different Leaf Colors under Heterogeneous Habitat

ZHOU Chan¹, BAI Dan¹, ZHANG Zhuo², YANG Yun-fei³, LI Jian-dong³

1. College of Life Science, Liaoning University, Shenyang, Liaoning Province 110036, China;
2. College of Biological and Environmental Engineering, Shenyang University, Shenyang, Liaoning Province 110044, China;
3. Institute of Grassland Science, Key laboratory of Vegetation Ecology of Education Ministry, Northeast Normal University, Changchun, Jilin Province 130024, China

Received:2011-10-11 Revised:2012-03-03 Online:2012-04-15 Published:2012-07-05

异质生境不同叶色羊草有性生殖特征的研究

周婵¹, 白丹¹, 张卓², 杨允菲³, 李建东³

1. 辽宁大学生命科学院, 辽宁沈阳 110036;
2. 沈阳大学生物与环境工程学院, 辽宁沈阳 110044;
3. 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, 吉林长春 130024

通讯作者: 张卓,E-mail:zhangzhuonet@yahoo.com.cn
作者简介:周婵(1975- ),女,山东掖县人,博士,副教授,主要从事草原生态学研究,E-mail:zhouchan75@yahoo.com.cn
基金资助:
国家自然科学基金项目(30900117)(30770397);辽宁省教育厅科研项目计划(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

Abstract

Abstract: Quantitative properties and reproductive allocation of Leymus chinensis with different leaf colors under different soil types were studied in natural steppes of Changling, Tumuji and Guyuan. Results showed that sexual reproductive characteristics and biomass allocation of Leymus chinensis with different leaf colors had flexibility changes under heterogeneous habitat. Leymus chinensis with different leaf colors under different soil type in Guyuan area had maximum spike length, spike weight, spikelet numbers, grain numbers and weights per spike, seeds-setting percentage, reproductive allocationⅠ, Ⅱand Ⅲ. Thousand-seed weights of Leymus chinensis with different leaf colors had smaller changes. There were significant or extremely significant changes between the maximum and the minimum weights of stem, sheath, leaf and total tillers of Leymus chinensis either with different leaf colors in the same soil type or with the same leaf color under different soil types. Stem weight of Leymus chinensis with different leaf colors had the most changes compared with sheath weight and leaf weight under heterogeneous habitats. Therefore Leymus chinensis with different leaf colors showed an adjustment strategy based on sexual reproduction and resource allocation under heterogeneous habitats.

Key words: Leymus chinensis, Reproductive allocation, Plasticity

摘要： 采用无样方采样法,对长岭、图牧吉和沽源自然草原不同土壤类型5种叶色羊草(Leymus chinensis)的数量特征和生殖分配进行研究,以期揭示羊草叶色渐变群有性生殖的内在规律。结果表明:异质生境不同叶色羊草有性生殖特性和生物量分配具有可塑性变化。不同土壤类型5种叶色羊草的穗长、穗重、小穗数、单穗籽粒数、结实率、单穗籽粒重及生殖分配Ⅰ, Ⅱ和Ⅲ最大值多数出现在沽源地区;羊草籽粒千粒重的变化幅度较小;相同土壤类型不同叶色羊草、相同叶色不同土壤类型羊草其茎重、鞘重、叶总重、植株总重等指标的最大值与最小值差异显著或极显著,但与中间过渡叶色之间差异多数不显著;异质生境不同叶色羊草的茎重最大,其次为鞘重和叶重。因此异质生境不同叶色羊草采取有性生殖调节策略和资源分配策略,具有较强的可塑性。

关键词: 羊草, 有性生殖, 可塑性

CLC Number:

ZHOU Chan, BAI Dan, ZHANG Zhuo, YANG Yun-fei, LI Jian-dong. Analysis of Sexual Reproduction of Leymus chinensis with Different Leaf Colors under Heterogeneous Habitat[J]. , 2012, 20(2): 213-220.

周婵, 白丹, 张卓, 杨允菲, 李建东. 异质生境不同叶色羊草有性生殖特征的研究[J]. , 2012, 20(2): 213-220.

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Analysis of Sexual Reproduction of Leymus chinensis with Different Leaf Colors under Heterogeneous Habitat

异质生境不同叶色羊草有性生殖特征的研究

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