树状牡丹耐热性评价及耐热指标筛选  

Evaluation of heat resistance in different tree shaped peony varieties

作　　者：黄则月 高家俊 郭锦慧 孟家松 HUANG Zeyue;GAO Jiajun;GUO Jinhui;MENG Jiasong(Yangzhou Forestry Management Station,Yangzhou 225009,China;College of Horticulture and Landscape Architecture,Yangzhou University,Yangzhou 225009,China)

机构地区：[1]扬州市林业管理站,江苏扬州225009 [2]扬州大学园艺园林学院,江苏扬州225009

出　　处：《安徽农学通报》2024年第13期35-41,共7页Anhui Agricultural Science Bulletin

基　　金：江苏省农业科技自主创新资金项目[CX(22)3186]。

摘　　要：为综合评价树状牡丹品种耐热性,本研究以24个引种树状牡丹品种为材料,在夏季高温胁迫下对其热害指数、相对电导率等19个指标进行测定,发现不同指标间的变异系数差异较大(8.25%~69.32%)。进一步运用相关性分析、主成分分析和聚类分析等多元统计方法对树状牡丹的耐热性进行评价,将24个树状牡丹耐热性分为4个等级,其中耐热性优秀品种2个(天鹅娇子、乌云集盛),耐热性良好品种4个(气壮山河、新世纪、黑妞和黑夫人),这些品种可在长江中下游以南地区种植;筛选出热害指数、SPAD值和相对含水量等9个指标作为树状牡丹耐热性评价指标。研究结果为树状牡丹品种选育及引种提供参考。In order to comprehensively evaluate the heat tolerance of tree shaped peony varieties,this study took 24 introduced tree shaped peony varieties as materials and measured 19 indexes such as heat damage index and relative conductivity under high temperature stress in summer,and found that the coefficients of variation among different indexes varied greatly(8.25%-69.32%).The heat tolerance of tree peonies was further evaluated using multivariate statistical methods such as correlation analysis,principal component analysis and cluster analysis,and 24 tree shaped peonies were classified into 4 grades of heat tolerance,including 2 varieties with excellent heat tolerance(Tian E Jiao Zi and Wu Yun Ji Sheng)and 4 varieties with good heat tolerance(Qi Zhuang Shan He,Xin Shi Ji,Hei Niu and Hei Fu Ren),which could be planted in the south of the middle and lower reaches of the Yangtze River;the heat damage index,SPAD index,and relative conductivity were selected.9 indicators such as heat damage index,SPAD value and relative water content were selected as indicators for evaluating the heat tolerance of tree shaped peony.The results of this study provided references for the selection and introduction of tree shaped peony varieties.

关 键 词：树状牡丹 主成分分析 耐热性 综合评价 热害指数 

分 类 号：S685.11[农业科学—观赏园艺]