盐胁迫下不同耐盐性葡萄砧木丙二醛和脯氨酸含量的变化

采用水培法,对5种不同耐盐性葡萄砧木品种的一年生苗进行不同浓度的氯化钠胁迫处理,测定叶片中MDA和Pro含量的变化。结果表明,在NaCl胁迫下,不同耐盐性葡萄砧木品种的MDA和Pro含量变化不同。NaCl胁迫对高抗品种ZM01-1的MDA含量影响较小,MDA含量处于一个比较稳定的水平,而其他品种的MDA变化幅度大。因此,可以把MDA含量的相对稳定作为葡萄耐盐性鉴定的辅助指标。NaCl胁迫下Pro含量呈波动式变化,在0.1%NaCl条件下,高抗品种ZM01-1的Pro积累少,在0.3%NaCl条件下ZM01-1的Pro积累多,所以Pro不宜作为葡萄耐盐性鉴定指标。

Changes of MDA and Proline Contents in Grape Rootstocks under NaCl Stress

Five kinds of grape rootstocks with different salt tolerance were treated with different NaCl contents under solution culture in order to investigate the changes of MDA and proline(Pro) contents in the leafs.The results showed as follows: there were differences in the changes of MDA and Pro among the tested varieties,MDA content maintained a relatively stable level in the high salt-tolerant ZM01-1 but changed significantly in the other stocks under different salt contents,so the stability of MDA content under NaCl stress could be considered as an indicator for salt tolerance of grapevine;the Pro content waved obviously among the tested materials under different salt contents and was not suitable to be an index of salt tolerance.