【摘要】 为评价不同花椒品种枝条的抗寒性,通过低温胁迫模拟试验,测定6个不同花椒品种枝条导水率,阐明导水性指标在低温胁迫下的变化,探讨不同花椒品种枝条的抗寒能力。结果表明,随着温度降低,各花椒品种枝条导水性能均有不同程度下降。运用Logistic曲线方程计算得到各花椒品种枝条的木质部半栓塞温度LT₅₀为-5.35～-33.47℃,其中‘狮子头’的LT₅₀最低,‘黄盖’的LT₅₀最高。隶属函数评价结果表明,6个花椒品种枝条的抗寒能力为‘狮子头’>‘西农无刺’>‘少刺大红袍’>‘黄盖’>‘无刺椒’>‘仡劳无刺’。因此,花椒种植可根据枝条的抗寒情况合理布局品种。更多还原

【Abstract】 In order to evaluate the cold resistance of branches of different Zanthoxylum bungeanum cultivars, the hydraulic conductivities of branches of six cultivars were measured through low temperature stress simulation test, the change of water conductivity indexes under low temperature stress was expounded, and the cold resistance of different cultivar branches was discussed. The results showed that the water conductivities of different cultivar branches decreased to varying degrees with the decrease of temperature. Through Logistic equation, the half-embolization temperature(LT₅₀) of the branches was obtained as-5.35～-33.47℃, among which, that of ‘Shizitou’ was the lowest, while that of ‘Huanggai’ was the highest. The results of membership function evaluation showed that the cold resistance of the six cultivar was in the order of ‘Shizitou’> ‘Xinong Wuci’>‘Shaoci Dahongpao’> ‘Huanggai’> ‘Wucijiao’>‘Gelao Wuci’. Therefore, in the process of planting Z. bungeanum, cultivars could be rationally arranged according to the cold resistance of branches.更多还原