SOD_M、DTA-6及Cc对马铃薯叶片碳代谢相关生理指标的影响

Effects of SOD_M, DTA-6, and Cc on carbon metabolism of potato leaves

大田栽培条件下，以马铃薯（Solanum tuberosum L.）荷兰212为材料，叶面喷施不同植物生长调节剂，测定叶片中蔗糖、蔗糖转化酶活性、淀粉、淀粉酶活性变化以及可溶性糖、还原糖等含量的变化，研究喷施植物生长调节剂对马铃薯叶片碳代谢生理指标的影响。结果表明：喷施SOD模拟物（简称SODM）后16天叶片中可溶性糖、蔗糖以及淀粉的含量显著提高，24天和32天后还原糖含量明显增加；氯化胆碱（Choline chloride, 简称Cc）能够极显著降低处理后32天时叶片的转化酶活性，也可以显著提高处理后24天和32天时还原糖的含量；2-N，N-二乙氨基乙基己酸酯（Diethyl aminoethyl hexanoate，简称DTA-6）能够极显著提高使用后16天时淀粉的含量，同时其对处理后24～32天淀粉酶活性有极显著降低的作用。

A field experiment with one potato （Solanum tuberosum L.）cultivar Holand-212 were used to investigate the differences in activities of invertase and amylase, and the contents of sucrose, starch, reduced sugar, and soluble sugar in potato leaves among three treatments of spraying SOD simulation material （SODM）, choline chloride （Cc） and diethyl aminoethyl hexanoate （DTA-6）. The results showed that, compared with CK, the content of soluble sugar, sucrose, and starch were increased for SODM treatment 16 d after spraying, which also significantly improved the reduced sugar content from the 24 th to the 32nd day after spraying. Further, the effect of Cc treatment showed significantly reduced activities of invertase 32 d after spraying. On the other hand, Cc treatment exhibited similar effect on reduced sugar as SODM treatment from the 24 th to the 32nd day after spraying. In addition, DTA-6 increased starch content on the 16th day after spraying, and decreased the activities of amylase from the 24 th to the 32 th day after spraying.