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Chinese Journal of Applied Ecology ›› 2000, Vol. ›› Issue (1): 54-57.

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Comparison of physiological characteristics of different ecotype plants

TAI Peidong1, GUO Shuhai1, SONG Yufang1, SUN Tieheng1, LI Peijun1, JIANG Shu 2   

  1. 1. Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110015;
    2. Institute of Botany, Chinese Academy of Sciences, Beijing 110093
  • Received:1999-02-03 Revised:1999-05-18 Online:2000-01-25

Abstract: Studies on the responses of photosynthesis,leaf water content and stoma resistance of 4 different ecotype plants to water stresses showed that their mechanism of drought-resistance was different.Mesic plants limited water loss from transpiration by increasing their stoma resistance,while xeric plants decreased water loss by keeping the high concentration of cell protoplasm.The latter had a higher efficiency of keeping water than the former.The leaf water content and stoma resistance was decreased from mesic to xeric plants,while the net photosynthetic rate per unit leaf was increased, indicating the difference of physiological characteristics among different ecotype plants.