Evaluation on Cold Resistance of 24 Pomegranate Cultivars
Wang Qingjun
Luo Hua
Zhao Lina
Chen Ying
Wang Yanqin
Wang Yuhai
Hao Zhaoxiang
Abstract：The cold resistance of 24 pomegranate cultivars was evaluated by the changes of physiological and biochemical indexes under low temperature stress with one-year-old dormant shoots as materials.Adopting simulated low temperature (room temperature,0,-4,-8,-12,-16,-20℃) for low temperature treatment,the relative conductivity (REC),semilethal temperature (LT50) and proline (Pro) and malondialdehyde (MDA) contents were determined and the cold resistance of 24 pomegranate cultivars was evaluated comprehensively by membership function method.The results showed that the REC,Pro and MDA contents of one-year-old shoots of 24 pomegranate cultivars showed an increasing trend with the decreasing of stress temperature.The LT50 of Yicheng Kanghan 1 was the lowest,which was-14.32℃ and showed the best cold resistance;the LT50 of Tunisi soft-seed pomegranate was the highest,which was-7.95 ℃ and showed the worst cold resistance.Through the membership function method for comprehensive evaluation of cold-resistance,we could concluded that 8 cultivars were classified into the grade Ⅱ with cold resistance,15 cultivars were classified into the grade Ⅲ with moderate resistance and 1 cultivar belonged to the grade Ⅳ with low resistance.
Keywords：PomegranateCultivarsCold resistanceEvaluation
Publication Date：2018-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：6( 50-54,59 )