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林业科学 ›› 2019, Vol. 55 ›› Issue (10): 162-170.doi: 10.11707/j.1001-7488.20191016

• 研究简报 • 上一篇    下一篇

绒毛白蜡雌雄株不同器官矿质元素季节动态的比较

宋爱云1,董林水1,*,陈纪香2,彭玲1,刘京涛1,夏江宝1,陈印平1   

  1. 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
  • 收稿日期:2019-03-21 出版日期:2019-10-25 发布日期:2019-11-26
  • 通讯作者: 董林水
  • 基金资助:
    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)

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

Aiyun Song1,Linshui Dong1,*,Jixiang Chen2,Ling Peng1,Jingtao Liu1,Jiangbao Xia1,Yinping Chen1   

  1. 1. Shandong Key Laboratory of Eco-Environmental Science for Yellow River Delta, Binzhou University Binzhou 256603
    2. Forestry Bureau of Dongying City Dongying 257091
  • Received:2019-03-21 Online:2019-10-25 Published:2019-11-26
  • Contact: Linshui Dong
  • Supported by:
    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同器官间的矿质元素含量比例分配及相互关系,是阐明雌雄株生长分化生理机制的前提。

关键词: 绒毛白蜡, 雌雄株, 矿质元素, 动态变化, 植株器官

Abstract:

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 fruit Mg content showed a significantly positive correlation. 4) Correlation analysis of mineral elements in different organs of Fraxinus velutina showed that, there were significant positive correlations between leaf K content and branch K content, leaf Na content and branch Na content of both male and female plants. There were significantly and extremely significant positive correlations between leaf Ca content and fruit Ca content, leaf Mg content and fruit Mg content of female plants respectively. There was a significant positive correlation between Na content in leaves and Na content in branches of both male and female plants. Objective: The result showed that there were differences in the distribution of mineral elements between male and female organs of Fraxinus velutina. In the growing season, the mineral element content in leaves of male plants was mostly higher than that of female plants.The female plants bore a large number of fruits and participated in a large proportion of mineral nutrition distribution, which might be the important factor affecting the mineral element content in leaves. The correlation analysis of different element contents in the same organ showed that there was a significant correlation between K, Ca and Mg contents in either leaves or fruits. The knowledge of the proportion distribution of mineral elements among different organs and the relationship is the premise to clarify the physiological mechanism of gender growth difference, and is also the focus of future research.

Key words: Fraxinus velutina, male and female plants, mineral elements, dynamic changes, plant organs

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