落叶果树2025，Vol.57Issue(2)：34-37,4.DOI:10.13855/j.cnki.lygs.2025.02.007
6个薄壳山核桃品种抗寒性研究
Study on cold resistance of six Carya illinoinensis cultivars
摘要
Abstract
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Key words
Carya illinoensis/cold resistance/logistic equation/semi-lethal temperature分类
农业科技引用本文复制引用
贾波涛,陈伟,曹顺,张经发,王敬波,曹大跃..6个薄壳山核桃品种抗寒性研究[J].落叶果树,2025,57(2):34-37,4.基金项目
长丰县2024年薄壳山核桃+金融+科技项目. （）
