摘要
以单叶刺槐母本(A1-1)及5个叶形产生明显变异的半同胞子代无性系(A21-1、B24-3、A15-1、A16-1和C23-1)的当年生休眠枝条为材料,测定各无性系样本在不同低温处理下的相对电导率和电阻抗参数。以母本的相对电导率为标准,通过相关性分析,优选最适电阻抗参数,进而与相对电导率联合分析,对单叶刺槐各样本的抗寒性进行综合评价。结果表明:弛豫时间τ和弛豫时间分布系数ψ是评价单叶刺槐抗寒性的最适电阻抗参数,各样本抗寒性的强弱与叶形变异无显著相关,各样本按抗寒强弱可分为3类:第I类,C23-1,抗寒性较强;第Ⅱ类包括A1-1、A16-1、A15-1,抗寒性中等;第Ⅲ类包括A21-1、B24-3,抗寒性相对较弱。
Based on the Robinia pseudoacacia f.unifolia and the dormant branches of five half sib-progenies with obvious leaf shape variation,the relative conductivity and electrical impedance parameters of each clone sample under different low temperature treatment were measured,and the relative conductivity of the female parent was taken as the standard.Through correlation analysis,the optimal electrical impedance parameters were optimized,and then combined with the relative conductivity analysis,the cold resistance of each sample was analyzed comprehensive evaluation.The results showed that the distribution coefficient of relaxation timeτand relaxation time distribution coefficientψwere the most suitable electrical impedance parameter to evaluate the cold resistance of Robinia pseudoacacia f.unifolia.There was no significant correlation between the cold resistance of each sample and the variation of leaf shapes.According to the cold resistance,all samples could be divided into three categories:Class I、C23-1,with strong cold resistance;Class II,including A1-1、A16-1、A15-1,with medium cold resistance;Class III,including A21-1、B24-3,with weak cold resistance.
作者
徐立人
曹丽娜
杨敏生
柳俊明
王立成
李清泉
张军
李彦慧
XU Li-ren;CAO Li-na;YANG Min-sheng;LIU Jun-ming;WANG Li-cheng;LI Qing-quan;ZHANG Jun;LI Yan-hui(College of Landscape Architecture and Tourism,Hebei Agricultural University,Baoding Hebei 071000,P.R.China;College of Forestry,Hebei Agricultural University,Baoding Hebei 071000,P.R.China;Baoding Mancheng Nursery Farm,Baoding Hebei 071000,P.R.China)
出处
《西部林业科学》
CAS
北大核心
2020年第5期12-17,共6页
Journal of West China Forestry Science
基金
国家重点研发计划课题(2017YFD0600503)
河北省重点研发计划项目(19226330D)。
关键词
单叶刺槐
低温胁迫
相对电导率
电阻抗参数
抗寒性评价
Robinia pseudoacacia f.unifolia
low temperature stress
relative conductivity
electrical impedance parameters
cold resistance evaluation
