6个薄壳山核桃品种抗寒性研究

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中图分类号：S664.1 文献标志码：A 文章编号：1002-2910（2025）02-0034-04

Study on cold resistance of six Carya illinoinensis cultivars

JIA Botao1， CHEN Wei'， CAO Shun1， ZHANG Jingfa²， WANG Jingbo²， CAO Dayuel* （1.Changfeng NuttyPieAgricultural Co.，Ltd，Hefei，Anhui 230，China;2.Nuttyie Agricultural Co.Hefei， Anhui 230000， China）

Abstract： In order to evaluation of cold resistance in six Carya illinoinensis cultivars，lowtemperature 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（ ）as the cold resistance index. The results showed that REC of allcultivars’ shoots progressively increased with decreasing treatment temperature. values determined by Logistic fitting for the six Carya illinoinensis（Wichita， Pawnee，Shawnee，Mahan，AnnongNo.1， Jinhua） were ， ， 0 and ， respectively. Cold resistance ranking based on was： Pawnee > Mahan > Shawnee > Wichita > Jinhua > Annong No.1.

Key words： Carya illinoensis; cold resistance; logistic equation; semi-lethal temperature

薄壳山核桃（Caryaillinoensis）为胡桃科，原产于北美洲，又称美国山核桃，是集坚果、油料及用材价值于一身的优良树种。（剩余5769字）