[1]李 辉,苏家乐,李 畅,等.高温胁迫下杜鹃不同品种的生理响应及其耐热性综合评价[J].江苏林业科技,2018,45(05):1-9.[doi:10.3969/j.issn.1001-7380.2018.05.001]
 Li Hui,Su Jiale,Li Chang,et al.Physiological response and heat tolerance of different Rhododendron cultivars under high temperature stress[J].Journal of Jiangsu Forestry Science &Technology,2018,45(05):1-9.[doi:10.3969/j.issn.1001-7380.2018.05.001]
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高温胁迫下杜鹃不同品种的生理响应及其耐热性综合评价()
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《江苏林业科技》[ISSN:1001-7380/CN:32-1236/S]

卷:
第45卷
期数:
2018年05期
页码:
1-9
栏目:
试验研究
出版日期:
2018-10-15

文章信息/Info

Title:
Physiological response and heat tolerance of different Rhododendron cultivars under high temperature stress
文章编号:
1001-7380(2018)05-0001-09
作者:
李 辉12苏家乐1李 畅1肖 政1何丽斯2*
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):
Li Hui12Su Jiale1Li Chang1Xiao Zheng1He Lisi2*
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:
杜鹃耐热性生理指标隶属函数聚类分析
Keywords:
Rhododendron sp.Heat tolerancePhysiological indexMembership functionCluster analysis
分类号:
Q945.78;S685.21
DOI:
10.3969/j.issn.1001-7380.2018.05.001
文献标志码:
A
摘要:
高温是制约杜鹃园林绿化应用的重要因子。为探讨杜鹃花属植物的高温致伤机理,该试验以杜鹃19个品种2年生扦插苗为材料,通过人工气候箱的盆栽试验,在 40 ℃ 高温胁迫下测定8项生理指标。结果发现:40 ℃ 高温胁迫条件下,19个品种杜鹃的MDA含量、H2O2含量、Pro含量、可溶性糖含量以及CAT活性增加,而可溶性蛋白含量、SOD和POD活性的变化因品种而异,故不能依靠单一的指标评价品种的耐热性。通过模糊隶属函数与聚类分析对19个品种杜鹃耐热能力的综合评价,认为可将其划分为5种类型,即高度耐热型、中度耐热型、弱耐热类型、热敏感类型和高度热敏感类型。
Abstract:
High temperature is an important factor that restricts the application of Rhododendron sp. in landscaping. In order to explore the high temperature injury mechanism of R. sp., 19 kinds of biennial cuttings were studied through pot trial in artificial climate chamber. Eight physiological indexes were determined under 40 ℃ high temperature stress. The results showed that the MDA content, H2O2 content, Pro content, soluble sugar content and CAT activity of these cultivars increased under 40 ℃ high temperature stress while the changes of soluble protein content, SOD and POD activities varied differently. The heat resistance of the cultivars could not be evaluated by a single index. According to comprehensive evaluation of heat resistance by the fuzzy membership function and cluster analysis, 19 cultivars were divided into 5 types, i.e., highly heat tolerant type, moderately heat tolerant type, mildly heat tolerant type, heat sensitive type and highly heat sensitive type.

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备注/Memo

备注/Memo:
收稿日期:2018-09-11;修回日期:2018-09-18
基金项目:江苏省林业科技创新与推广项目“杜鹃花新品种‘蝶舞’‘蝶恋’工厂化育苗技术及应用推广” [LYKJ(2017)48];江苏省农业科技自主创新资金项目“优新树种选育与高效栽培技术方案”[CX(16)1005]
作者简介:李 辉(1992- ),男,江苏兴化人,硕士生。主要从事观赏植物栽培研究。E-mail:644712850@qq.com。
*通信作者:何丽斯(1981-),女,广东中山人,副研究员,博士。主要从事观赏植物生物工程及生理方面的研究。Tel:025-84390223;E-mail:helisi@jaas.ac.cn。
更新日期/Last Update: 2018-11-22