雄全异株植物白牛槭功能性状与碳素含量关联性研究
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

基金项目:

教育部新世纪优秀人才支持计划(NCET-12-0781);国家自然科学基金(31200315);国家林业公益性行业科研专项(201204309)


Correlation of Functional Traits and Carbon Contents in Androdioecy Plant Acer mandshuricum
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    以雄全异株植物白牛槭为研究对象,在3个不同的花果发育期(盛花期、果实膨大期和果实成熟期)将雄全异株繁育系统和植物功能性状相结合,从功能性状与碳元素关联性角度研究植物繁殖和营养生长过程,探讨白牛槭适应环境的策略以及其两性植株在营养与繁殖之间的权衡关系。结果显示:(1)白牛槭枝叶功能性状在同一花果发育期内,除果实膨大期两性植株与雄株的叶干物质含量有显著差异外,其他2个花果发育期两性植株与雄株比叶面积(SLA)、叶干物质含量(LDMC)和枝干物质含量(BDMC)均无显著差异。不同花果发育期(盛花期、果实膨大期和成熟期)之间枝叶功能性状差异极显著,两性植株盛花期与果实膨大期的LDMC差异显著,果实膨大期和成熟期的SLA差异显著,而雄株并不存在这样的差异。(2)两性植株LDMC与BDMC具有极显著正相关关系,而雄株LDMC与BDMC之间呈显著相关关系,较两性植株弱。(3)同一花果发育期内,两性植株与雄株的叶碳含量、枝碳含量差异不显著;枝碳含量在不同花果发育期间差异极显著,大小顺序为:盛花期<果实膨大期<果实成熟期。(4)两性植株的枝叶碳含量与枝叶干物质含量均呈极显著正相关关系,雄树仅叶碳含量与枝干物质含量呈显著正相关关系。研究表明,白牛槭两性植株与雄株的繁殖和营养生长活动具有明显阶段性,两性植株在资源获取及养分保持能力方面显著大于雄株;在叶片与枝条之间联系紧密程度方面亦是如此,说明两性植株的养分制造及传输系统具有高度的一致性,这是两性植株面临着繁殖压力而做出的适应环境的策略之一,并且两性植株并没有因此而降低其营养生长,这可能与两性植株自身存在制造养分的补偿机制有关。

    Abstract:

    Androdioecy (the coexistence of two genders,bisexuals and males,in a single population) is a rare breeding system.The association between plant functional traits and breeding system give us a new insight to determine the strategies how plants adapt to environment.It is considered to be necessary to analyze the correlation of functional traits and carbon contents,especially when studying about the differences between reproductive and vegetative growth process.We analyzed the specific leaf area(SLA),leaf dry matter content(LDMC),branch dry matter content(BDMC),leaf carbon content and branch carbon content in different flower and fruit developmental stages of both genders.The main results can be summarized as follows:(1) no significant difference was found in the same flower and fruit developmental stages for these functional traits except for LDMC in fruit inflating stage(P<0.05).However,these functional traits are significantly different between three flower and fruit developmental stages.As for bisexuals,LDMC,SLA,strong correlation were observed between full-bloom stage and fruit inflating stage,fruit inflating stage and mature stage,respectively(P<0.001),while no difference for males.(2) Strong positive correlation were observed between LDMC and BDMC as for bisexuals (P<0.001).Conversely,weak positive correlation were observed between LDMC and BDMC for males(P<0.05).(3) No significant difference was found in the same flower and fruit developmental stages for both genders’ leaf carbon content and branch carbon content.Obvious difference was found among three stages(P<0.001),and the branch carbon content in the full-bloom stage was the greatest,the second for fruit inflating stage and the least for mature stage (4) Positive correlation was found between leaf carbon content,branch carbon content and LDMC,BDMC for bisexuals(P<0.001),while there was positive correlation only between leaf carbon content and BDMC for males(P<0.05).We can conclude that Acer mandshuricum’s reproductive and vegetative growths vary among phases obviously.Bisexuals showed stronger correlation between leaf and branch than that in males,and this was also found in the ability to obtain and maintain resource.This suggests that bisexuals have a high concordance with obtain resource and transmission system,which is a strategy to adapting to the environment.For bisexuals,reproductive cost seems not to be high enough to affect vegetative growth,and we infer that bisexuals may have compensation mechanism.

    参考文献
    相似文献
    引证文献
引用本文

朱燕艳,王 娟,赵秀海,等.雄全异株植物白牛槭功能性状与碳素含量关联性研究[J].西北植物学报,2015,35(10):2089-2095

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:
  • 最后修改日期:
  • 录用日期:
  • 在线发布日期: 2015-11-02
  • 出版日期:

微信公众号二维码

手机版网站二维码