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以不结球白菜‘新矮青’品种为材料,研究了不同时间(1、3、5、7d)和不同程度(根淹、半淹、全淹)淹水处理及解除淹水恢复生长后叶片内渗透调节物质含量的变化规律。结果表明:(1)在根淹和半淹胁迫处理下,不结球白菜叶片中可溶性糖、可溶性蛋白和游离脯氨酸含量随处理时间的延长呈先上升后下降的趋势;全淹胁迫下,这3种渗透调节物质的含量随处理时间的延长出现不同程度的下降。(2)解除淹水恢复生长7d后,各处理组的不结球白菜叶片中渗透调节物质的含量在短期(1d)淹水下基本恢复正常,在长期淹水条件下未完全恢复;全淹处理组恢复能力较弱,而根淹处理组恢复能力相对较强;可溶性糖的恢复幅度高于可溶性蛋白和游离脯氨酸。
The new short green Chinese cabbage varieties were used as materials to study the effects of flooding treatment at different times (1, 3, 5, 7d) and different degrees (root flooding, semi-flooding and total flooding) Variation of Osmotic Adjustment Substances in Leaves. The results showed that: (1) Soluble sugar, soluble protein and free proline content in leaves of non-heading Chinese cabbage at first submerged and semi-submerged stress increased first and then decreased with the prolongation of treatment time; , The content of these three kinds of osmotic adjusting substances decreased with different extents of treatment time. (2) After 7d, the content of osmolytes in non-heading Chinese cabbage leaves in each treatment group returned to normal under the condition of short-term (1d) submergence, but not fully recovered under long-term submergence conditions The recovery ability of treatment group was weak, while that of root flooding treatment group was relatively stronger. The recovery of soluble sugar was higher than that of soluble protein and free proline.