江汉平原楸树组培苗生长量对极度干旱的响应  

Growth of Catalpa bungei Tissue Culture Seedlings in Jianghan Plain under Extreme Natural Drought

作　　者：张亚东[1] 宋慧丽 张锐 赵虎[1] Zhang Yadong;Song Huili;Zhang Rui;Zhao Hu(Hubei Academy of Forestry, Wuhan 430075;Wuhan Baihe Landscape Design Co.,Ltd.,Wuhan 430079;Forest Seedling Management Station of Hubei Forestry Bureau, Wuhan 430079)

机构地区：[1]湖北省林业科学研究院,武汉430075 [2]武汉百禾景观设计有限责任公司,武汉430079 [3]湖北省林业局林木种苗管理总站,武汉430079

出　　处：《湖北林业科技》2020年第4期22-24,28,共4页Hubei Forestry Science and Technology

基　　金：中央财政林业科学推广示范资金项目(鄂[2018]TG12号)。

摘　　要：2019年湖北气候出现夏季高温、伏秋连旱现象,本研究对江汉平原地区的楸树组培苗在极度自然干旱下的生长情况进行调查分析,结果表明楸树自根苗具有较强的耐旱性,但极度干旱对楸树苗木生长造成了较大影响,不同无性系对干旱的响应不同,不同无性系在不同干旱时段的地径和株高性状均表现差异显著,为进一步选择耐干旱的优良无性系提供了依据。the climate in Hubei province experienced high temperature in summer and sustained drought in summer and autumn in 2019.The growth of Catalpa bungei tissue culture seedlings in Jianghan Plain under extreme natural drought was investigated and analyzed.The results showed that Catalpa bungei self-rooted seedlings had strong drought tolerance,but extreme drought had a great impact on the growth of Catalpa bungei seedlings.Different clones had different responses to drought,and different clones showed significant differences in ground diameter and plant height in different drought periods,which provided a basis for further selection of drought-resistant superior clones.

关 键 词：楸树 组培苗 极度干旱 生长表现 

分 类 号：S791.254[农业科学—林木遗传育种]