雄全异株植物白牛槭功能性状与碳素含量关联性研究  

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

作　　者：朱燕艳[1] 王娟[1] 赵秀海[1] 邳田辉 张忠辉[3] 赵珊珊[3] 

机构地区：[1]北京林业大学森林资源与生态系统过程北京市重点实验室,北京100083 [2]吉林省蛟河林业试验区管理局,吉林蛟河132517 [3]吉林省林业科学研究院,长春130033

出　　处：《西北植物学报》2015年第10期2089-2095,共7页Acta Botanica Boreali-Occidentalia Sinica

基　　金：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)

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。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 differ-ent 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 LDMCin fruit inflating stage（P0.05）.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（P0.001）,while no difference for males.（2）Strong positive correlation were observed between LDMCand BDMCas for bisexuals（P0.001）.Conversely,weak positive correlation were observed between LDMCand BDMC for males（P0.05）.（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（P0.001）,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,BDMCfor bisexuals（P0.001）,while there was positive correlation only between leaf carbon content and BDMC for males（P0.05）.We can conclude that Acer mandshuricum＇s r

关 键 词：雄全异株 白牛槭 功能性状 碳素含量 

分 类 号：Q949.95[生物学—植物学]