低温处理对4个葡萄砧木品种抗寒生理指标的影响

Cryogenic treatment on cold resistance indexes of four grape rootstocks

以1年生贝达、SO4、5BB、抗砧3号葡萄砧木枝条为试材,经不同低温胁迫处理4 h后,测定不同葡萄砧木品种枝条中的相对电导率、丙二醛(MDA)含量、可溶性总糖含量、游离脯氨酸含量、可溶性蛋白含量的变化。试验结果表明,随着处理温度的降低,各品种电解质渗出率、丙二醛含量明显增加;总糖、可溶性蛋白、游离脯氨酸含量总体呈上升趋势。对供试品种的抗寒性进行了综合评价,得出4个供试葡萄砧木品种抗寒性强弱顺序为贝达>5BB>抗砧3号>SO4。

One year old canes from Beta, SO4, 5BB, kangzhen 3# were treated by different low temperature for 4 h, to detect the changes of malondialdehyde （MDA） content, total sugar content, free proline acid content, and soluble protein content from the different canes of rootstock varieties. The results showed that, all varieties of electrolyte leakage, MDA content increased significantly with decreasing temperature; total sugar, soluble protein and free proline overall upward trend. Base on above data, the hardiness order of four varieties were Beta〉5BB〉kangzhen 3#〉SO4.