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Botanical Research 2024
干旱胁迫下甘蓝型油菜叶片碳酸酐酶活性的变化
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Abstract:
本文研究了盆栽条件下叶面喷锌对抽薹期甘蓝型油菜叶片的碳酸酐酶活性和抗旱性的影响。用不同浓度的ZnSO4？7H2O喷洒抽薹期油菜叶片1周后，进行干旱处理及复水处理。结果显示：在干旱渐进以及复水过程中喷锌组油菜叶片碳酸酐酶活性、净光合速率和脯氨酸含量均高于未喷锌组，而丙二醛含量则低于未喷锌组。说明叶面喷锌可以使甘蓝型油菜碳酸酐酶活性增加，进而可增加甘蓝型油菜的抗旱性。
This paper studied the effects of foliar zinc spraying on the carbonic anhydrase activity and drought resistance of Brassica napus leaves during the bolting stage under potted conditions. The rapeseed leaves at the bolting stage were sprayed with different concentrations of ZnSO4？7H2O for 1 week, followed by drought treatment and rehydration treatment. The results showed that the carbonic anhydrase activity, net photosynthetic rate and proline content of rapeseed leaves in the zinc-sprayed group were higher than those in the non-zinc-sprayed group, while the malondialde-hyde content was lower than that in the non-zinc-sprayed group during the gradual drought and rewatering process. This shows that foliar zinc spraying can increase carbonic anhydrase activities in Brassica napus, which in turn can increase the drought resistance of Brassica napus.
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