绒毛白蜡雌雄株不同器官矿质元素季节动态的比较  

Comparation of Seasonal Dynamics of Mineral Elements Contents in Different Organs of Male and Female Plants of Fraxinus velutina

作　　者：宋爱云[1] 董林水[1] 陈纪香 彭玲 刘京涛[1] 夏江宝[1] 陈印平[1] Song Aiyun;Dong Linshui;Chen Jixiang;Peng Ling;Liu Jingtao;Xia Jiangbao;Chen Yinping(Shandong Key Laboratory of Eco-Environmental Science for Yellow River Delta,Binzhou University,Binzhou 256603;Forestry Bureau of Dongying City,Dongying 257091)

机构地区：[1]滨州学院山东省黄河三角洲生态环境重点实验室,滨州256603 [2]山东省东营市林业局,东营257091

出　　处：《林业科学》2019年第10期162-170,共9页Scientia Silvae Sinicae

基　　金：国家重点研发计划项目(2017YFC0505904);山东省重点研发计划项目(2017GSF17113);山东省重大科技创新工程(2017CXGC0316);山东省林业科技创新项目(LYCX07-2018-38);山东省高等学校科技计划项目(J16LH53);城市与区域生态国家重点实验室开放基金项目(SKLURE2015-2-4)

摘　　要：【目的】研究绒毛白蜡植株不同器官矿质元素含量的季节动态及雌雄株间的性别差异,为进一步阐明雌雄株生长分化的内在生理机制提供理论参考。【方法】以绒毛白蜡雌雄株为研究对象,5—11月每月中旬取叶片、枝条、果实,应用电感耦合离子光谱仪系统分析生长季内雌雄株不同器官矿质元素(K、Ca、Na、Mg)含量的动态变化。【结果】1)绒毛白蜡生长季内不同器官K元素含量的大小顺序为果实>叶片>枝条;而Ca、Mg在生长季各月份则为叶片>枝条>果实;生长季初期Na含量的大小顺序为叶片>果实>枝条,而生长季中后期的大小顺序则为叶片>枝条>果实。生长季内叶片K元素含量呈现逐步降低的趋势,而叶片Ca和Na含量则呈现逐渐增高的趋势,叶片Mg含量则维持相对稳定含量。2)雌雄株对比表明,生长季内雄株叶片K、Ca、Na、Mg元素含量多大于雌株叶片,这种差异在部分月份达到显著水平。3)同一器官不同元素含量的相关分析表明,叶片K含量与Ca、Mg含量多呈现显著负相关,而叶片Ca与Mg含量则呈现显著正相关,叶片Na元素与叶片其余元素含量间均不存在显著相关性;与叶片类似,果实K与Ca含量呈现显著负相关,果实Ca与Mg含量则呈现显著正相关。4)不同器官间元素含量相关分析表明,雌雄株叶片K与枝条K以及叶片Na与枝条Na含量间均存在显著正相关关系;雌株叶片Ca与果实Ca、叶片Mg与果实Mg含量之间分别存在显著和极显著的正相关性;雌雄株叶片Na含量与枝条Na含量均表现为显著正相关性。【结论】不同矿质元素在绒毛白蜡雌雄株器官间的分配规律存在差异性;生长季各阶段,雄株叶片矿质元素含量多数大于雌株,雌株翅果大量结实,参与较大比例的矿质营养分配,可能是影响叶片矿质元素含量的重要因素。叶片、果实中K、Ca、Mg各元素含量之间多存在显著相关性,明确绒毛白蜡植株不�【Objective】In this study,we investigated the distribution regularity of mineral elements in different plant organs and gender differences between male and female plants of Fraxinus velutina,in order to provide a theoretical basis for further elucidating the physiological mechanism of the difference in growth of female and male plants of Fraxinus velutina.【Method】The dynamics of mineral element(K,Ca,Na,Mg)contents in different organs of male and female plants of Fraxinus velutina were compared.【Result】The result presented in the following four aspects:1)The K content in different organs of Fraxinus velutina was in order of fruit>leaf>branch during the growing season from May to November.However,the order of Ca and Mg in different organs of Fraxinus velutina in each months during the growing season was leaf>branch>fruit.From May to June,the order of Na content in different organs was leaf>fruit>branch,while in the middle and late growing season the order of Na content in different organs was leaf>branch>fruit.During the growing season,the K content in the leaves of Fraxinus velutina decreased with time,the contents of Ca and Na in leaves increased with time,and the Mg content of leaves remained stable.2)Comparison of mineral elements contents in leaves of male and female plants of Fraxinus velutina showed that,the K,Ca,Na and Mg contents of male plants were higher than those of female plants in each month during the growing season,but this difference was significant only in some months of the growing season.3)Correlation analysis of mineral elements contents in the same organ of Fraxinus velutina showed that,the leaf K content was significantly negatively correlated with leaf Ca and Mg content respectively,while leaf Ca and leaf Mg contents showed a significantly positive correlation.There was no significant correlation between Na content and other elements contents in leaves.Similar to leaves,there was a significantly negative correlation between fruit K and fruit Ca content,while the fruit Ca and frui

关 键 词：绒毛白蜡 雌雄株 矿质元素 动态变化 植株器官 

分 类 号：S687.1[农业科学—观赏园艺]