4种北美海棠叶片结构与抗旱性的关系  

Relationship between Leaf Structure and Drought Resistance of Four Species of North American Begonia

作　　者：史滟滪 武春霞 张莹 牟坤 

机构地区：[1]天津农学院园艺园林学院,天津 [2]天津市远大园林工程有限公司,天津

出　　处：《植物学研究》2020年第3期196-204,共9页Botanical Research

基　　金：天津市科委种业科技重大专项,北美海棠引种、选育、繁殖的研究(17ZXZYNC00070);天津市林果现代农业产业技术体系创新团队项目(ITTFPRS2018002);油用牡丹优质种源的规模化繁育与种植项目(17ZXBFNC00310)。

摘　　要：本试验以品种即冬红、红宝石、舞美、绚丽4个北美海棠的品种的叶片为试材,采用徒手切片法,旨在筛选适宜于北方绿化的抗旱性品种。通过测量气孔大小、气孔密度、表皮厚度、角质膜厚度、栅栏组织厚度等指标,分析叶片结构与抗旱性的关系。结果显示各项指标从大到小依次是:上表皮厚度为绚丽 】舞美 】冬红 】红宝石;角质膜厚度为绚丽 】舞美 】红宝石 】冬红;气孔密度和气孔大小为红宝石 】冬红 】舞美 】绚丽;栅栏组织结构紧密性为冬红 】舞美 】绚丽 】红宝石。经隶属函数的综合分析4种北美海棠品种的抗旱能力依次为:绚丽 】舞美 】冬红 】红宝石。The method of narmed slice is adopted, with namely Winter Red, Ruby, Dancing and Gorgeous as the test materials, through measuring the thickness of epidermis mesophyll thickness, stomata density, stomata size, such as index, analysis of four kinds of the Chinese flowering crabapple blade structure and the relationship between the drought resistance of North America. The results showed that: according to the analysis of the thickness of the upper epidermis, the drought resis-tance was Gorgeous >Dancing >Winter Red >Ruby. The drought resistance can be obtained from the thickness of the cutin film was Gorgeous >Dancing >Ruby >Winter Red. From stomatal density and stomatal size, it is concluded that Ruby >Winter Red >Dancing >Gorgeous. The conclusion from the compactness of blade structure is as follows: Winter Red >Dancing >Gorgeous >Ruby. Based on the comprehensive analysis of the subordinate function, it is concluded that the drought resistance of four kinds of begonia in North America is: Gorgeous >Dancing >Winter Red >Ruby.

关 键 词：北美海棠 徒手切片 解剖结构 抗旱性 

分 类 号：J81[艺术—戏剧戏曲]