38个榛种质资源叶功能性状与光合特征变异及其相关性  

Variation and correlation of leaf functional traits and photosynthetic characteristics of 38 hazelnut germplasm resources

作　　者：罗达[1] 史彦江[1] 宋锋惠[1] 李嘉诚 LUO Da;SHI Yan-jiang;SONG Feng-hui;LI Jia-cheng(Institute of Economic Forests,Xinjiang Academy of Forestry Science,Urumqi 830063,China)

机构地区：[1]新疆林业科学院经济林研究所,乌鲁木齐830063

出　　处：《生态学杂志》2021年第1期11-22,共12页Chinese Journal of Ecology

基　　金：新疆“天池博士计划”项目(TCBSJH2017-8);国家自然科学基金项目(31960324);新疆公益性科研院所基本科研业务费专项(ky2018047和ky2019037)资助。

摘　　要：研究了38个榛种质资源叶功能性状与光合特征参数的变异特征及其相关关系,为优良种质资源的选择以及进一步理解叶功能性状对光合特征的影响机制提供科学依据。结果表明:38个种质资源的叶面积(LA)、叶形指数(LI)、叶干重(LDW)、比叶面积(SLA)和叶干物质含量(LDMC)平均值分别为78.39 cm^(2)、1.24、0.73 g、109.95 cm^(2)·g^(-1)和38.31%,LDW变异最大,其次为LA和SLA,LI和LDMC变异最小;净光合速率(Pn)、蒸腾速率(Tr)、气孔导度(gs)、胞间CO2浓度(Ci)、气孔限制值(Ls)和水分利用效率(WUE)平均值分别为9.92μmol·m^(-2)·s^(-1)、3.88 mmol·m^(-2)·s^(-1)、153.04μmol·m^(-2)·s^(-1)、238.73μmol·mol^(-1)、0.41和2.54μmol·mmol-1,gs变异最大(27.89%),Pn、Ci、Ls和WUE次之(10.37%~15.14%),Tr最小(9.99%)。不同种质资源叶功能性状与光合特征参数之间均存在极显著差异。Pearson相关分析表明:Pn与LA、LDW、LDMC均呈显著正相关,与SLA则呈显著负相关;Tr与LA呈显著正相关;gs和Ci与LDMC分别呈显著负相关和正相关;WUE与LDW、LDMC均呈显著正相关,与SLA则呈显著负相关。冗余分析表明:第1、2排序轴共同解释了叶片光合特征总变异的88.6%,其中,对光合特征产生显著影响的叶功能性状因子为SLA和LDMC。平欧210号、F-03、平欧11号、平欧88号、平欧119号、85-162、平欧48号、玉坠、平欧110号表现出较高的水分和光能利用效率。The variation and correlation of leaf functional traits and photosynthetic characteristic parameters among 38 hazelnut germplasm resources were examined,aiming to provide scientific basis for the selection of excellent germplasm resources and further understanding the mechanisms underlying the influence of leaf functional traits on photosynthetic characteristics.The results showed that the average values of leaf area (LA),leaf shape index (LI),leaf dry weight(LDW),specific leaf area (SLA) and leaf dry matter content (LDMC) of 38 germplasm resources were 78.39 cm^(2),1.24,0.73 g,109.95 cm^(2)·g^(-1)and 38.31%,respectively.The largest variation was found for LDW,followed by LA and SLA,and the smallest for LI and LDMC.The mean values of net photosynthetic rate (Pn),transpiration rate (Tr),stomatal conductance(gs),intercellular CO2concentration (Ci),stomatal limitation (Ls) and water use efficiency(WUE) were 9.92μmol·m^(-2)·s^(-1),3.88 mmol·m^(-2)·s^(-1),153.04μmol·m^(-2)·s^(-1),238.73μmol·mol^(-1),0.41 and 2.54μmol·mmol-1,respectively.gshad the highest variation coefficients (27.89%),followed by Pn,Ci,Lsand WUE (10.37%-15.14%),and Trwas the smallest (9.99%).Results of Pearson correlation analysis showed that Pnwas positively correlated with LA,LDW and LDMC,while negatively correlated with SLA.Trwas positively correlated with LA.gsand Ciwere negatively correlated with LDMC.WUE was positively correlated with LDW and LDMC,but negatively correlated with SLA.Results of the redundancy analysis showed that the first and second order axes together accounted for 88.6%of the total variation of leaf photosynthetic characteristics,with SLA and LDMC being the factors that significantly affected the photosynthetic characteristics.Ping’ou 210,F-03,Ping’ou 11,Ping’ou 88,Ping’ou 119,85-162,Ping’ou 48,Yuzhui and Ping’ou 110 showed higher water and light use efficiency.

关 键 词：榛种质资源 比叶面积 叶干物质含量 水分利用效率 相关分析 主成分分析 

分 类 号：S664.4[农业科学—果树学]