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[目的]评价4个樱桃主栽品种在不同低温胁迫下的抗寒特性。[方法]以早大果、红灯、拉宾斯、喀什壶汗4个樱桃主栽品种为实验材料,研究了其休眠枝在不同低温胁迫下的相对电导率(REC),脯氨酸(PRO)含量,丙二醛(MDA)含量,超氧化物歧化酶(SOD)活性和过氧化物酶(POD)活性的变化。[结果]14个樱桃品种相对电导率大小顺序为喀什壶汗>红灯>早大果>拉宾斯,丙二醛含量的大小顺序为喀什壶汗>早大果>红灯>拉宾斯,均随着处理温度的降低呈上升趋势。24个樱桃品种脯氨酸含量、过氧化物酶活性和超氧化物歧化酶活性的变化与其相对电导率和丙二醛含量的变化相反,大小顺序均为拉宾斯>红灯>早大果>喀什壶汗,随着低温胁迫的加剧均呈现先上升后下降的趋势。[结论]4个樱桃品种的抗寒性由强到弱的顺序为拉宾斯>红灯>早大果>喀什壶汗。
[Objective] The research aimed to evaluate the cold resistance of four main cultivars of cherry under different low temperature stress. [Method] With four cherry cultivars as early as big fruit, red light, Labins and Kashgar as experiment materials, the relative conductivity (REC), proline ( PRO content, malondialdehyde (MDA) content, superoxide dismutase (SOD) activity and peroxidase (POD) activity. [Result] The order of relative conductivity of 14 cherry varieties was Kashi Khan> red light> big fruit> Labs, the order of the content of MDA was Kashi Khan> big fruit> red light> , All increased with the decrease of treatment temperature. The changes of proline content, peroxidase activity and superoxide dismutase activity of 24 cherry cultivars were opposite to those of relative conductivity and malondialdehyde content, with the order of the order of Labs> red light> > Kashi Khan Khan, with the intensification of low temperature stress showed a upward trend first and then downward trend. [Conclusion] The order of cold resistance of four cherry varieties from strong to weak was Labs> red light> big fruit> Kashi Khan.