6个薄壳山核桃品种抗寒性研究  

Study on cold resistance of six Carya illinoinensis cultivars

作　　者：贾波涛 陈伟 曹顺 张经发 王敬波 曹大跃 JIA Botao;CHEN Wei;CAO Shun;ZHANG Jingfa;WANG Jingbo;CAO Dayue(Changfeng Nutty Pie Agricultural Co.,Ltd,Hefei,Anhui 230000,China;Nutty Pie Agricultural Co.,Hefei,Anhui 230000,China)

机构地区：[1]长丰坚果派农业有限公司,安徽合肥230000 [2]坚果派农业有限公司,安徽合肥230000

出　　处：《落叶果树》2025年第2期34-37,共4页Deciduous Fruits

基　　金：长丰县2024年薄壳山核桃+金融+科技项目。

摘　　要：为了评价6个薄壳山核桃品种的抗寒性能。在实验室模拟低温环境,测定低温胁迫下一年生枝条的相对电导率变化,结合Logistic方程进行回归分析,求出各品种的半致死温度LT50作为抗寒性能的指标。结果表明,随着处理温度的降低,各品种枝条的相对电导率呈现逐渐增大趋势,根据Logistic方程计算得到威奇塔、波尼、肖尼、马汉、安农1号、金华6个薄壳山核桃品种的半致死温度分别为-21.02℃、-23.54℃、-21.12℃、-21.89℃、-18.37℃、-20.35℃,据此评价其抗寒性能强弱为波尼>马汉>肖尼>威奇塔>金华>安农1号。In order to evaluation of cold resistance in six Carya illinoinensis cultivars,low-temperature environments were simulated in the laboratory to measure relative electrical conductivity(REC)changes in annual shoots under cold stress.Logistic equation regression analysis was applied to calculate lethal temperature(LT50)as the cold resistance index.The results showed that REC of all cultivars’shoots progressively increased with decreasing treatment temperature.LT50 values determined by Logistic fitting for the six Carya illinoinensis(Wichita,Pawnee,Shawnee,Mahan,Annong No.1,Jinhua)were-21.02℃,-23.54℃,-21.12℃,-21.89℃,-18.37℃,and-20.35℃,respectively.Cold resistance ranking based on LT50 was:Pawnee>Mahan>Shawnee>Wichita>Jinhua>Annong No.1.

关 键 词：薄壳山核桃 抗寒性 LOGISTIC方程 半致死温度 

分 类 号：S664.1[农业科学—果树学]