香木莲开花过程中叶片碳水化合物及营养元素的变化  

Research on Changes of Leaf Carbohydrates and Nutrients During the Flowering Process of Manglietia aromatica

作　　者：韦虹日 阳乾程 覃永华 刘世男[2] WEI Hongri;YANG Qiancheng;QIN Yonghua;LIU Shinan(State-own Yachang Forest Farm of Guangxi Autonomous Region,Baise,Guangxi 533000;Guangxi Colleges Key Laboratory for Cultivation and Utilization of Subtropical Forest Plantation/College of Forestry,Guangxi University,Nanning 530004;Guangxi Forest Inventory and Planning Institute,Nanning 530011)

机构地区：[1]广西壮族自治区国有雅长林场,广西百色533000 [2]广西大学林学院/广西高校亚热带人工林培育与利用重点实验室,南宁530004 [3]广西壮族自治区林业勘测设计院,南宁530011

出　　处：《中国农学通报》2024年第1期52-59,共8页Chinese Agricultural Science Bulletin

基　　金：广西教育厅科研项目“广西不同地理种群香木莲的亲缘关系研究”(2020ky01015)。

摘　　要：通过前期野外调查发现广西香木莲开花结实率较低,且2个不同地区的香木莲在开花结实上存在差异,鉴于碳水化合物与营养元素对开花坐果的作用,对香木莲展开研究。以广西都安和乐业2个地区的香木莲为材料,分析开花过程中2个地区的香木莲在各开花坐果时期叶片碳水化合物和营养元素含量的变化及差异。结果表明:(1)在整个研究期内,乐业香木莲的可溶性糖和淀粉含量高于都安香木莲;随着时间变化,2个地区香木莲叶片碳水化合物含量呈现一致的变化趋势,可溶性糖含量先升高后下降,而淀粉含量持续上升。(2)都安和乐业香木莲叶片中大量元素N、P、K含量均表现为N>K>P,且在花蕾期至果实形成初期,2个地区的香木莲N、K含量变化趋势相同,盛花期至幼果期2个地区的香木莲P、K含量变化趋势一致;在盛花期至幼果期2个地区的香木莲叶片中Ca含量均呈先下降后上升趋势,而Mg含量在整个开花期间含量变化均不显著;微量元素含量的顺序表现为Fe>B>Mn>Zn>Cu,不同的发育时期不同地点的香木莲各微量元素的变化规律存在差异。(3)都安香木莲叶片中的K、Mg、Mn、Cu、Zn含量在花蕾期至盛花期显著低于乐业香木莲,而P、B、Zn含量在果实形成初期和幼果期显著高于乐业香木莲,Ca含量在花蕾期和初花期均显著高于乐业香木莲。Through the preliminary field survey,it was found that the flowering and fruiting rate of Guangxi Manglietia aromatica was low,and there were differences in flowering and fruiting of M.aromatica in two different regions.In view of the role of carbohydrates and nutrient elements on flowering and fruiting,a study was conducted on M.aromatica.In this research,we analyzed the changes and differences in leaf carbohydrates and nutrient contents during flowering and fruiting in two regions of Guangxi Du’an and Leye,with a view to providing theoretical guidance for its high-quality and efficient cultivation.The results showed that:(1)during the whole study period,the soluble sugar and starch contents of Leye M.aromatica were higher than those of Du’an M.aromatica;with the change of time,the carbohydrate contents of the leaves of M.aromatica in the two regions showed the same trend of change,with the soluble sugar content increasing first and then decreasing,while the starch content continued to increase.(2)The N,P,and K contents of the massive elements in the leaves of the M.aromatica of Du’an and Leye showed N>K>P,and the N and K contents of the M.aromatica of both places showed the same trend from the bud stage to the early stage of fruit formation,and the P and K contents of the M.aromatica of both places showed the same trend from the flowering stage to the young fruit stage;from the flowering stage to the young fruit stage,the Ca contents of the leaves of the balsam lilies of both places showed a decreasing trend and then an increasing trend,while the Mg contents did not change significantly throughout the flowering period.The order of trace elements was Fe>B>Mn>Zn>Cu,and there were differences in the pattern of changes of trace elements in different locations during different developmental periods.(3)The contents of K,Mg,Mn,Cu and Zn in the leaves of Du’an M.aromatica were significantly lower than those of Leye M.aromatica from the bud stage to the flowering stage,while the contents of P,B and Zn were signi

关 键 词：香木莲 开花 碳水化合物 营养元素 

分 类 号：S792.99[农业科学—林木遗传育种]