中国滨海沼泽湿地芦苇种子功能性状的纬度梯度变异

doi:10.13287/j.1001-9332.202212.001

应用生态学报 ›› 2022, Vol. 33 ›› Issue (12): 3294-3302.doi: 10.13287/j.1001-9332.202212.001

中国滨海沼泽湿地芦苇种子功能性状的纬度梯度变异

王昊羽¹, 仝川^1,2,3*, 黄佳芳^1,2,3, 张俪文⁴, 邱广龙⁵, 布仁仓⁶, 梁嫦娥¹

¹福建师范大学地理科学学院, 福州 350007;
²福建师范大学湿润亚热带生态-地理过程教育部重点实验室, 福州 350007;
³福建闽江河口湿地生态系统国家定位观测研究站, 福州 350215;
⁴天津师范大学生命科学学院, 天津 300382;
⁵广西科学院广西红树林研究中心, 广西北海 536000;
⁶中国科学院沈阳应用生态研究所, 沈阳 110016

收稿日期:2022-06-21 接受日期:2022-09-06 出版日期:2022-12-15 发布日期:2023-07-05
通讯作者: * E-mail: tongch@fjnu.edu.cn
作者简介:王昊羽, 男, 1998年生, 硕士研究生。主要从事湿地植物种子生态学研究。E-mail: wanghaoyu9490@163.com
基金资助:
国家科技部科技基础资源调查项目(2019FY100604)和福建省林业科技项目(2021FKJ30)

Latitudinal variations of seed functional traits of Phragmites australis in Chinese coastal marsh

WANG Hao-yu¹, TONG Chuan^1,2,3*, HUANG Jia-fang^1,2,3, ZHANG Li-wen⁴, QIU Guang-long⁵, BU Ren-cang⁶, LIANG Chang-e¹

¹School of Geographical Sciences, Fujian Normal University, Fuzhou 350007, China;
²Ministry of Education Key Laboratory of Humid Subtropical Eco-geographical Process, Fujian Normal University, Fuzhou 350007, China;
³Fujian Minjiang River Estuary Wetland Ecosystem National Positioning Observation and Research Station, Fuzhou 350215, China;
⁴College of Life Science, Tianjin Normal University, Tianjin 300382, China;
⁵Guangxi Mangrove Research Centre, Guangxi Academy of Sciences, Beihai 536000, Guangxi, China;
⁶Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China

Received:2022-06-21 Accepted:2022-09-06 Online:2022-12-15 Published:2023-07-05

摘要/Abstract

摘要： 种子功能性状反映了植物适应环境变化的繁殖对策,这是植物在自然环境选择和遗传上的一种进化行为,对深入认识植物及种子对环境的长期适应性进化意义重大。本研究对中国滨海6个省市9个地区的滨海沼泽湿地(21°29′—40°57′ N)主要土著植物芦苇种子功能性状(包括种子大小、重量、结实率和产量)进行研究,分析其纬度变异规律。结果表明: 我国滨海湿地芦苇种子各功能性状在不同纬度差异显著,各功能性状间具有显著的相关性。芦苇种子大小(种长、种宽、种形指数、长宽比、种子表面积)和百粒重与纬度呈显著的二次函数关系,随着纬度升高先降后升,而种子结实率呈现先升后降的规律,芦苇种子数量与大小间存在着权衡关系。单位面积种子产量随着纬度升高显著增加。逐步回归分析显示,气候因素是影响不同纬度间芦苇种子功能性状差异的主要因素,土壤孔隙水的pH和盐度次之。

关键词: 芦苇, 种子功能性状, 纬度, 滨海沼泽

Abstract: Functional traits of seeds reflect plant reproductive strategies adapting to environmental changes, which is an evolutionary behavior in natural selection and genetics. Study on seed functional traits is of great significance to deeply understand the long-term adaptive evolution of plants and seeds. We measured seed functional traits of a main indigenous species Phragmites australis, including seed size, seed weight, seed set, and seed production, in nine coastal marshes of the six provinces/cities along the coastal zone of China (21°29′-40°57′ N), and analyzed latitudinal variations of functional traits. The results showed that seed functional traits of P. australis in Chinese coastal marshes varied significantly with latitude and that there were significant correlations among different traits. Seed size (including seed length, seed width, seed shape index, aspect ratio, and seed surface area), and 100-seed weight showed significant quadratic function relation with latitude, which firstly decreased and then increased with the increases of latitude, while seed setting rate firstly increased and then reduced. There was a trade-off between the number and size of P. australis seeds. Seed production per unit area significantly increased with latitude. Results of stepwise regression analysis showed that climatic factors were the main driver resulting in the difference of seed functional traits of P. australis between latitudes, followed by pH and salinity of soil porewater.

Key words: Phragmites australis, seed functional trait, latitude, coastal marsh

王昊羽, 仝川, 黄佳芳, 张俪文, 邱广龙, 布仁仓, 梁嫦娥. 中国滨海沼泽湿地芦苇种子功能性状的纬度梯度变异[J]. 应用生态学报, 2022, 33(12): 3294-3302.

WANG Hao-yu, TONG Chuan, HUANG Jia-fang, ZHANG Li-wen, QIU Guang-long, BU Ren-cang, LIANG Chang-e. Latitudinal variations of seed functional traits of Phragmites australis in Chinese coastal marsh[J]. Chinese Journal of Applied Ecology, 2022, 33(12): 3294-3302.

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中国滨海沼泽湿地芦苇种子功能性状的纬度梯度变异

Latitudinal variations of seed functional traits of Phragmites australis in Chinese coastal marsh

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