‘树上干’杏抗寒性研究与评价  

Research and Evaluation in Freezing Resistance of ‘Shushanggan' Apricot

作　　者：王瑾 卢磊 尚振江 林德胜 赵兵 何东 

机构地区：[1]新疆伊犁州林业科学研究院,新疆伊宁835000

出　　处：《北方园艺》2016年第21期16-19,共4页Northern Horticulture

基　　金：新疆维吾尔自治区自然科学基金资助项目(20144213725)

摘　　要：‘树上干’杏是伊犁河谷特有的杏树资源,为了研究‘树上干’杏抵御冻害的能力及其在伊犁河谷的栽培适宜区,该试验以3个类型‘树上干’杏1年生休眠枝条为试材,利用电导法对‘树上干’杏3个类型的枝条在不同低温处理下的电解质渗透率进行测定,通过Logistic方程计算‘树上干’杏枝条的低温半致死温度。结果表明:随着处理温度的降低,‘树上干’杏枝条组织的电解质渗透率变化表现出慢-快-慢的‘S’形曲线;同时结合低温处理后的冻害分级及恢复生长,确定‘树上干’杏的半致死温度(LT50)在-26^-28℃,3个‘树上干’杏类型的抗寒性强弱依次为大果‘树上干’杏>小果‘树上干’杏>早熟‘树上干’杏;‘树上干’杏在伊犁河谷沿山逆温带可安全越冬,平原区不宜栽植。‘Shushanggan＇is an unique apricot resource in Ili river valley.In order to study the cold hardiness on low temperature stress of‘Shushanggan＇apricot,and the fitting cultivating region in Ili river valley.Conductivity method was used to observe the changes of leakage ratio of electrolyte（REC）after low-temperature treatment for investigating three varieties of apricot annual branch semilethal temperature（LT50）.The results showed that,electrolyte leakage rate increased like‘S＇curve when the temperature was reducing.At the same time combined with cold injury classification and recovery growth after low-temperature treatment,the semilethal temperature of‘Shushanggan＇apricot was from-26℃to-28℃.The order of cold tolerance was the big fruit‘Shushanggan＇apricots〉mall fruit‘Shushanggan＇apricotprecocious‘Shushanggan＇apricot.According to the freezing injury classification,‘Shushanggan＇apricot was safe in the Ili temperature inversion area in winter.It should not be planted in flat area.

关 键 词：'树上干’杏 电解质渗透率 半致死温度 抗寒性 

分 类 号：S662.203.4[农业科学—果树学]