| Effects of DTA-6, SODM and Cc on growth and assimilite metabolism in underground stems of potato |
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| DOI：10.7606/j.issn.1000-7601.2013.06.024 |
| Key Words: plant growth substance potato underground stem assimilite metabolism physiological parameter |
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| Abstract: |
| Using the potato (Solanum tuberosum L.) cultivar ‘Helan-212’ as test material, three treatments of plant growth substances, including diethyl aminoethyl hexanoate (DTA-6), choline chloride (Cc) and SOD simulation material (SODM), were employed for foliar spray, and the
fresh weight and dry weight of underground stems, the contents of sucrose, starch and soluble sugar, and the activities of invertase and amylase were measured, so as to compare the differences of growth of underground stems and physiological parameters of carbon metabolism in potato under different treatments. The results showed that, compared with CK, the content of sucrose was significantly inc
reased by the treatments of Cc and SODM from the 16th day after spraying, with a rate of 36.68% and 30.36%, respectively. What's more, the activity of amylase was also significantly increased by the treatment of Cc at the 40th and 48th day after spraying, with a rate of 35.11% on average. The activity of invertase was increased by the treatment of Cc and DTA-6 from the 32nd day after spraying, but the analysis of variance showed that the difference was not significant. Furthermore, the treatment of SODM could reduce the starch content significantly, while the treatment of Cc could increase the content of soluble sugar significantly at tuber expansion period. |
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