低温胁迫对杏电解质外渗率的影响

采用电导法测定15个杏品种花器官在低温胁迫下电解质外渗率,探讨了杏品种抗寒性与电解质外渗率变化的相关关系。结果表明:经一元线性回归,用回归系数b值和常数项a值来对比分析抗寒性大小发现:沙金红、山黄杏、串枝红、苹果杏和兰州杏等品种的这两个数值相对较小。因此得出结论,沙金红、山黄杏等品种在受低温影响时,膜透性变化幅度小,电解质外渗缓慢,抗寒性强。15个杏品种的抗寒性由强到弱依次为:沙金红>山黄杏>串枝红>苹果杏>兰州杏>红荷包>鸡蛋杏>麻真核>华县大接杏>猪皮水杏>银香白>软条京>大杏梅>意大利Ⅱ>金荷包。

Effects of Low Temperature Stress on Electrolyte Leakage Rate of Apricot

Using the method of electric conductance,15 varieties of apricot were selected to determine the electrolyte leakage rate of flowers in low temperature stress,so as to explore the relationship between cold resistance and electrolyte leakage rate in apricot.The unitary linear regression analysis showed that the b value of regression coefficient and the a value of constant term were relatively small in Shajinhong,Shanhuang apricot,Chuanzhihong,Apple apricot,and Lanzhou apricot by comparing them with the degree of cold resistance.It could be concluded that these varieties had strong cold resistance because they had small variation scope of membrane permeability and slow rate of electrolyte leakage in low temperature condition.The order of cold resistance for the 15 apricot varieties was:Shajinhong﹥Shanhuang apricot﹥Chuanzhihong﹥Apple apricot﹥Lanzhou apricot﹥Honghebao﹥Jidan apricot﹥Mazhenhe﹥Huaxi and ajieapricot﹥ Zhupishui apricot﹥Yinxiangbai﹥Ruantiaojing﹥Daxing plum﹥ItalyⅡ﹥Jinhebao.