| Effects of drought on trigonelline content and osmotic adjustment in leaves of three alfalfa (Medicago sativa L.) varieties |
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| DOI：10.7606/j.issn.1000-7601.2009.04.23 |
| Key Words: drought osmotic adjustment trigonelline alfalfa(Medicago satvia L.) |
| Author Name | Affiliation | | LIU Xiaodong | Lab of Plant Physiology, Northeast Forestry University, Harbin, Heilongjiang 150040, China | | SUN Guangyu | Lab of Plant Physiology, Northeast Forestry University, Harbin, Heilongjiang 150040, China | | Li Wei | Lab of Plant Physiology, Northeast Forestry University, Harbin, Heilongjiang 150040, China |
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| Abstract: |
| Taking three alfalfa varieties Zhunger, Zhaodong and CW200 as test materials, this paper studied the changes of trigonelline content and osmotic adjustment under drought stress. The results showed that leaf water potential(Ψw) decreased. Proline in leaves of three varieties was accumulated, and osmotic adjustment (OA) increased for 16 days. Trigonelline content in leaves of Zhunger and Zhaodong increased significantly within 8-day drought, but not significantly in leaves of CW200, trigonelline content in leaves of Zhaodong and CW200 after 4-day drought and Zhunger after 8-day drought declined. It was suggested that trigonelline increasing as the osmolyte could achieve osmotic adjustment significantly under moderate drought, but not significantly under severe drought. |
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