不同甜椒品种抗寒性研究初报

Preliminary Study on Cold Resistance of Different Sweet Pepper Varieties

摘要: 以12个甜椒品种为材料,对低温胁迫下甜椒叶片的相对电解质渗出率、MDA含量、脯氨酸含量等生理指标的变化情况进行研究,结合相关性分析,采用隶属函数法对各甜椒的抗寒性进行综合评价。结果表明:随着处理温度的降低,甜椒叶片的相对电解质渗出率、MDA含量、脯氨酸含量均有不同幅度的升高,不同品种间的升高幅度有所差异。根据隶属函数法的综合评价结果,‘中椒4号’、‘多福’、‘中椒8号’‘中椒105号’为高抗寒品种,‘金华星’和‘冠军椒王’为低抗寒性品种,其他6个品种为中抗寒品种。

Abstract: Under the low temperature stress,12sweet pepper varieties were comprehensively evaluated using subordinate function method combined with correlation analyses based on the relative electric conductivity,MDA content,and proline content.The results showed that,with the temperature decreasing,the relative electric conductivity,the content of MDA,and the content of proline in sweet pepper leaf were increasing.Different sweet pepper varieties had different responses to continuous cold stress.Among them,'Zhongjiao No.4','Duofu',' Zhongjiao No.8','Zhongjiao No.105'were high cold tolerance,'Jinghuaxing'and'Guanjunjiaowang'were low cold tolerance,the other 6varieties were moderate cold tolerance.