[1]何丽斯,李 辉,刘晓青,等.基于光合特性评价10个杜鹃花品种的耐热能力[J].江苏林业科技,2019,46(04):21-26.[doi:10.3969/j.issn.1001-7380.2019.04.005]
 He Lisi,Li Hui,Liu Xiaoqing,et al.Evaluation of heat resistance of azalea based on photosynthetic characteristics[J].Journal of Jiangsu Forestry Science &Technology,2019,46(04):21-26.[doi:10.3969/j.issn.1001-7380.2019.04.005]
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基于光合特性评价10个杜鹃花品种的耐热能力()
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《江苏林业科技》[ISSN:1001-7380/CN:32-1236/S]

卷:
第46卷
期数:
2019年04期
页码:
21-26
栏目:
试验研究
出版日期:
2019-08-31

文章信息/Info

Title:
Evaluation of heat resistance of azalea based on photosynthetic characteristics
文章编号:
1001-7380(2019)04-0021-06
作者:
何丽斯1李 辉1刘晓青1李 畅1陈尚平1肖 政1周惠民1孙晓波1苏家乐1*
1.江苏省农业科学院休闲农业研究所/江苏省高效园艺作物遗传改良重点实验室,江苏 南京210014;
2.扬州大学园艺与植物保护学院,江苏 扬州 225009
Author(s):
He Lisi1Li Hui2Liu Xiaoqing1Li Chang1 Cheng Shangping1Xiao Zheng1Zhou Huimin1Sun Xiaobo1Su Jiale1*
1.Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement, Institute of Leisure Agriculture,Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China;2.College of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225009, China
关键词:
杜鹃花耐热性光合特性主成分分析隶属函数法
Keywords:
AzaleaHeat tolerancePhotosynthetic characteristicsPrincipal component analysisMembership function method
分类号:
Q945.11;Q945.78;S685.21
DOI:
10.3969/j.issn.1001-7380.2019.04.005
文献标志码:
A
摘要:
为了探讨不同杜鹃花品种的耐热性差异,以10个杜鹃花品种2年生扦插苗为材料,对其在人工模拟高温胁迫下叶片的光合特效进行测定,并运用主成分分析法和隶属函数法进行综合评价。结果表明,在高温胁迫下,10个杜鹃花品种的净光合速率、蒸腾速率、气孔导度等共6个光合指标均呈下降趋势,且不同品种的下降幅度不同;利用主成分分析将原来的 Pn Tr Gs Ci WUE LUE CUE Ls 共8个相互关联的光合指标转化为4个独立的主成分,其累计贡献率达94.5937%,由这4个主成分的特征向量表达式可知,在第1个主成分中, LUE CUE 占主导作用,在第2个主成分中 Tr Gs 占主导作用,在第2,4个主成分中占主导作用的分别是 WUE Gs 。并通过隶属函数及其权重,计算得到综合评价值( D 值),将10个杜鹃花品种按照耐热性的强弱划分为3类:‘炮仗红’‘石岩杜鹃’‘胭脂蜜’属于强耐热类型,‘晓霞’‘丰美1号’‘媱妃’‘春樱’属于中等耐热类型,‘紫金粉玉’‘小莺’‘粉红泡泡’属于不耐热类型。
Abstract:
In order to explore the differences in heat resistance of different azaleas, the photosynthetic characteristics of 2-year cuttings of 10 azalea cultivars under artificial high temperature stress were measured, and the principal component analysis and membership function method were used for comprehensive evaluation. The results showed that under high temperature stress,the net photosynthetic rate, transpiration rate, stomatal conductance and the other there photosynthetic indexes of 10 azalea cultivars all decreased, and the decrease rates were different among different cultivars. Such eight original correlative photosynthetic indicators as the net photosynthetic rate (Pn), transpiration rate (Tr), stomatal conductance (Gs), intercellular CO2 concentration (Ci), water use efficiency (WUE), light use efficiency (LUE),CO2 use efficiency (CUE) and limiting value of stomata (Ls) could be transformed into four independent principal components by using principal component analysis, with the cumulative contribution rate up to 94.593%. According to the eigenvector expressions of these four principal components, LUE and CUE played a dominant role in the first principal component, Tr and Gs played a dominant role in the second principal component while WUE and Gs played a dominant role in the third and fourth principal components respectively. Moreover, the comprehensive evaluation value (D value) was calculated by membership function and its weight. According to the above results of the heat resistance, these 10 azalea cultivars were divided into three categories: ‘Paozhanghong’, ‘Shiyandujuan’ and ‘Yanzhimi’ belonged to high heat-tolerance type; ‘Xiaoxia’, ‘Fengmeiyihao’, ‘Yaofei’ and ‘Chunying’ belonged to medium heat-tolerance type; ‘Zijinfenyu’, ‘Xiaoying’ and ‘Fenhongpaopao’ belonged to poor heat-tolerance type.

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备注/Memo

备注/Memo:
收稿日期:2019-06-02;修回日期:2019-06-21
基金项目:中央财政林业科技推广示范资金项目“杜鹃花良种繁育及其经济林木高效间种技术示范与推广”(苏[2018]TG02);国家青年科学基金项目“生物质炭修复园林退化土壤及促进杜鹃花生长的机理研究”(41807110);江苏省省级林业发展资金“江苏省农科院杜鹃花林木种质资源库”(苏财农[2019]22号)
作者简介:何丽斯(1981-),女,广东中山人,副研究员,博士。主要从事观赏植物栽培及抗逆性研究。E-mail:alicehelisi@foxmail.com。
*通信作者:苏家乐(1965-),男,江苏江都人,研究员,硕士。主要从事花卉苗木品种选育及栽培技术研究。Tel:025-84391218;E-mail:sujl66@aliyun.com。
更新日期/Last Update: 2019-09-27