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Drought Resistace in Relation to Free Proline in the Major Tree Species in Dry and Hot River Valley of Jinsha

  • Received Date: 1998-05-24
  • The accumulation of free proline in some major tree species growing in dry and hot river valley of Jinsha during both dry and rainy seasons has respectively been determined.The result shows that the free proline content in Acacia manguim,Tephrosia candida,A.podalyriifolia,A.auriliformia,A.confusa,A.holosericea and Dodonaea viscosa increased significantly than in any other species in dry season.No observable changes have been found as for the content of free proline in Eucalyptus camaldulensia,E.camaldlensia from Thailand, E.citriodora,E.urophylla,E.robusta,Leucaena leucocephala,Acacia glauca,Zizyphus mauritiana in both seasons.There is not obvious interrelation between the accumulation of free proline and drought resistance in the plants whether among different species,or among the same tree species from different area,or from different ecological forms.It seems that there is certain limitation to utilize the content of free proline as the indices as plant drought resistance.However,using the free proline as indices or parameter to determine the physiological change in some plants under water stress is suggested.
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Drought Resistace in Relation to Free Proline in the Major Tree Species in Dry and Hot River Valley of Jinsha

  • 1. The Research Institute of Economic Insects, CAF, 650216, Kunming, China
  • 2. South west Forestry College, 650224, Kunming, China

Abstract: The accumulation of free proline in some major tree species growing in dry and hot river valley of Jinsha during both dry and rainy seasons has respectively been determined.The result shows that the free proline content in Acacia manguim,Tephrosia candida,A.podalyriifolia,A.auriliformia,A.confusa,A.holosericea and Dodonaea viscosa increased significantly than in any other species in dry season.No observable changes have been found as for the content of free proline in Eucalyptus camaldulensia,E.camaldlensia from Thailand, E.citriodora,E.urophylla,E.robusta,Leucaena leucocephala,Acacia glauca,Zizyphus mauritiana in both seasons.There is not obvious interrelation between the accumulation of free proline and drought resistance in the plants whether among different species,or among the same tree species from different area,or from different ecological forms.It seems that there is certain limitation to utilize the content of free proline as the indices as plant drought resistance.However,using the free proline as indices or parameter to determine the physiological change in some plants under water stress is suggested.

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