不同种源光皮树叶功能性状分异及其对种子特性的影响  

Differentiation of leaf functional traits in Swida wilsoniana from different provenances and their effects on seed characteristics

作　　者：刘敬坤[1,2] 王旭 李兆佳[1,2] 宝音满达 赵厚本[1,2] 周光益 皮志豪 陈景震[4] LIU Jingkun;WANG Xu;LI Zhaojia;Baoyin Manda;ZHAO Houben;ZHOU Guangyi;PI Zhihao;CHEN Jingzhen(Institute of Tropical Forestry,China Academy of Forestry Sciences,Guangzhou 510520,Guangdong,China;Nanling Mountains Beijiangyuan Forest Ecosystem National Observation and Research Station,Guangzhou 510520,Guangdong,China;Hainan University,Haikou 570228,Hainan,China;Hunan Academy of Forestry,Changsha 410004,Hunan,China)

机构地区：[1]中国林业科学研究院热带林业研究所,广东广州510520 [2]南岭北江源森林生态系统国家定位观测研究站,广东广州510520 [3]海南大学,海南海口570228 [4]湖南省林业科学院,湖南长沙410004

出　　处：《经济林研究》2023年第3期124-135,共12页Non-wood Forest Research

基　　金：国家科技基础资源调查专项(2019FY00803_03)。

摘　　要：[目的]了解不同种源光皮树在引种地叶功能性状的差异,探寻不同种源对环境的生存适应策略。[方法]以来自江西和广东韶关的不同种源光皮树为研究对象,通过对叶片形态、营养成分、光合性状及种子品质进行测定,分析其差异性及相关性。[结果]不同种源光皮树之间叶功能性状存在分异,其中:光合性状差异最大,尤其是叶绿素含量,变异系数高达80.09%;叶片相对含水率、叶片厚度和叶片干物质含量的变异系数较小,分别为3.41%、8.71%和9.38%;种子品质的变异系数较小,为6.29%~19.85%。叶功能性状对种子品质具有一定的影响,其中:种子千粒质量与叶片钙含量、叶组织密度显著正相关,与叶片磷含量、钾含量显著负相关;出油率与叶片镁含量、最大净光合速率显著正相关,与叶组织密度显著负相关;油脂的不饱和脂肪酸含量与叶片厚度显著负相关,油脂的脂肪酸含量与叶片厚度显著正相关,与叶片钙含量显著负相关。[结论]不同种源光皮树叶功能性状间存在差异,进而影响到种子特性。钙是光皮树生长结果的关键元素,栽培过程中加强植物钙的管理是优质丰产的关键。【Objective】This study was carried out to reveal the leaf functional traits difference of introduced Swida wilsoniana of different provenances,as well as to analyze its adaptation strategies to natural habitats.【Method】The traits of leaf morphology,nutrient and photosynthesis,seed quality and the relations among them of S.wilsoniana of different provenances from Jiangxi province and Shaoguan,Guangdong were examined and analyzed.【Result】The S.wilsoniana of different provenances varied in leaf function traits.The greatest variation was observed in chlorophyll content(coefficient of variation was up to 80.09%),meanwhile the variation in relative water content,leaf thickness and leaf dry matter were small(3.41%,8.71%and 9.38%).And the variation of seed quality was small to medium ranging from 6.29%to 19.85%.Thousand kernel mass was positively correlated to calcium content and tissue density,and negatively to phosphorus and potassium content of leaf.The oil yield was positively correlated with leaf magnesium content and maximum photosynthetic rate,and negatively with leaf tissue density.The content of unsaturated fatty acids showed a strong negative correlation with leaf thickness.The content of fatty acids was positively correlated to leaf thickness,and negatively to leaf calcium content.Therefore,seed quality was affected by leaf functional traits to some extent.【Conclusion】The leaf functional traits varied between S.wilsoniana of different provenances,which affect the seed quality.And calcium is a key nutrient for the growth and fruiting of S.wilsoniana,which required prior management in cultivation for high quality and yield.

关 键 词：木本油料植物 功能性状 变异系数 种子品质 丰产栽培 

分 类 号：S602[农业科学—园艺学]