5年抗寒驯化对4个山楂品种低温半致死温度的影响  

Effects of 5 Years of Cold Resistance Acclimatiotion on LT_(50) of 4 Hawthorn Cultivars

作　　者：杜人杰 曲跃军 张翼 DU Ren-jie(Mudanjiang Branch of Heilongjiang Academy of Forestry,Mudanjiang,Heilongjiang 157009)

机构地区：[1]黑龙江省林业科学院牡丹江分院,黑龙江牡丹江157009

出　　处：《园艺与种苗》2021年第5期30-32,共3页Horticulture & Seed

基　　金：黑龙江省森林工业总局应用研究项目(sgzjY2014015)。

摘　　要：[目的]考察5年抗寒驯化对4个山楂品种低温半致死温度的影响。[方法]运用Logistic方程建立山楂抗寒性预测模型。[结果]经过5年寒地低温驯化,4个山楂品种甜红、磨盘、本溪2号、绛县798201的LT_(50)分别降低了4.33、5.59、3.98、4.48℃;运用Logistic方程拟合山楂枝条相对电导率随温度变化规律的拟合优度(R^(2))介于0.8636~0.91215之间。[结论]结果为黑龙江省高纬度的高寒地区山楂抗寒性鉴定、杂交育种的资源筛选及引种栽培提供理论基础和实践依据。[Objective]To investigate the effect of 5 years of cold acclimatization on the low temperature half lethal temperature of 4 hawthorn cultivars.[Method]The prediction model of hawthorn cold resistance was established by logistic equation.[Result]The LT_(50) of 4 hawthorn cultivars(Tianhong,Mopanshanzha,Benxi-2,Jiangxian-798201)decreased by 4.33、5.59、3.98、4.48℃respectively with 5 years of low temperature acclimation.The goodness of fit(R^(2))of Logistic equation fitting Hawthorn branches relative conductivity with temperature variation from 0.8636 to 0.91215.[Conclusion]The results provide theoretical basis and practical basis for identification of hawthorn cold resistance,the resource selection of cross breeding and the introduction and cultivation of hawthorn in the higher latitude regions of Heilongjiang Province.

关 键 词：山楂 相对电导率 低温半致死温度 LOGISTIC方程 

分 类 号：S661.5[农业科学—果树学]