Allometric Relationships between Morphological and Reproductive Traits of Chenopodium glaucum

doi:10.11733/j.issn.1007-0435.2015.05.002

Acta Agrestia Sinica ›› 2015, Vol. 23 ›› Issue (5): 905-913.DOI: 10.11733/j.issn.1007-0435.2015.05.002

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Allometric Relationships between Morphological and Reproductive Traits of Chenopodium glaucum

HUANG Ying-xin¹, SONG Yan-tao², FAN Gao-hua¹, ZHOU Dao-wei¹

1. Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, Jilin Province 130102, China;
2. College of Environment and Resource, Dalian Nationalities University, Dalian, Liaoning Province 116600, China

Received:2014-07-14 Revised:2014-12-12 Online:2015-10-15 Published:2015-12-01

灰绿藜形态性状与繁殖性状的异速关系

黄迎新¹, 宋彦涛², 范高华¹, 周道玮¹

1. 中国科学院东北地理与农业生态研究所, 吉林长春, 130102;
2. 大连民族学院环境与资源学院, 辽宁大连, 116600

通讯作者: 周道玮
作者简介:黄迎新(1980-),男,吉林长春人,博士,副研究员,主要从事植物生态学研究,E-mail:huangyx@iga.ac.cn
基金资助:
科技基础性工作专项(2014FY210300);自然科学基金(31000216)资助

Abstract

Abstract:

The allometric relationship between morphological and reproductive traits and their response to environmental variations were analyzed by measuring the morphological and reproductive traits of Chenopodium glaucum under different light, nutrient and germination timing conditions. The results showed that there were allometric relationships between morphological and reproductive traits. The branch of big size had faster growth rate than the plant of small size, meanwhile, C. glaucum allocated more resource to reproductive growth. However, there were trade-off between inflorescence density and plant size. The smaller plant size of C. glaucum had the higher inflorescence density. The treatment of light intensity caused the varying reproductive traits of C. glaucum, while these changes resulted from the varying plant size under different light gradients. The reproductive strategy(allometry) did keep in constant. Nutrient and germination timing treatments affected the allometric relationships. There were inconstant allometric relationships between morphological and reproductive traits in nutrient treatments. However, the treatment of germination time had significant effect on the allometry, the plants of later germination allocated more resource to reproductive growth.

Key words: Allometry, Chenopodium glaucum, Total branch volume, Total branch length

摘要：

通过对不同光照强度、营养和萌发时间处理条件下灰绿藜的形态指标和繁殖指标的测定,本研究探讨了灰绿藜形态性状和繁殖性状之间的异速关系及其异速生长对环境变化的响应。结果表明:灰绿藜形态性状与繁殖性状之间存在显著的异速生长关系,随着灰绿藜个体大小的增大,单个枝条的大小增速更快,并且将更多的资源分配到灰绿藜的繁殖生长。但灰绿藜的花序密度与个体大小之间具有显著的权衡关系:灰绿藜越小,花序密度越高。光照处理引起植物的繁殖性状发生了变化,但是这些变化主要是由在光照梯度下的个体大小不同造成的,繁殖策略(异速生长)未发生改变。而营养及萌发时间处理对灰绿藜的形态性状与繁殖性状间的异速关系产生了影响。营养变化对不同性状间的异速关系无一致影响,而萌发时间则具有显著的影响,晚萌发的灰绿藜将更多的资源投入到繁殖生长。

关键词: 异速生长, 灰绿藜, 总枝条体积, 枝条长度

CLC Number:

Q944

HUANG Ying-xin, SONG Yan-tao, FAN Gao-hua, ZHOU Dao-wei. Allometric Relationships between Morphological and Reproductive Traits of Chenopodium glaucum[J]. Acta Agrestia Sinica, 2015, 23(5): 905-913.

黄迎新, 宋彦涛, 范高华, 周道玮. 灰绿藜形态性状与繁殖性状的异速关系[J]. 草地学报, 2015, 23(5): 905-913.

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Allometric Relationships between Morphological and Reproductive Traits of Chenopodium glaucum

灰绿藜形态性状与繁殖性状的异速关系

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