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Study on physiological adaptation of drought stress on up-rice at filling stage

Fenglou Ling

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Abstract

The flag leaves stress physiological index of four breeds of upland rice were studied on filling stage.The result showed that the activity of superoxide dismutase(SOD),peroxidase(POD),Catalase(CAT) and the content of Proline in drought stronger varieties(Handao15 and Handao 2)were observably higher than drought resistance of the weaker varieties(Handao 3 and Handao 1),and the content of Malondialdehyde(MDA) and the electrical conductivity in drought stronger varieties(Handao 15 and Handao 2) were significantly lower than drought resistance of the weaker varieties(Handao 1 and Handao 3).So the activity of SOD,POD,CAT and the content of MDA,Proline,the electrical conductance reveal the difference of physiological adaptation in different varieties.

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What this paper is about

The flag leaves stress physiological index of four breeds of upland rice were studied on filling stage.The result showed that the activity of superoxide dismutase(SOD),peroxidase(POD),Catalase(CAT) and the content of Proline in drought stronger varieties(Handao15 and Handao 2)were observably higher than drought resistance of the weaker varieties(Handao 3 and Handao 1),and the content of Malondialdehyde(MDA) and the electrical conductivity in drought stronger varieties(Handao 15 and Handao 2) were significantly lower than drought resistance of the weaker varieties(Handao 1 and Handao 3).So the activity of SOD,POD,CAT and the content of MDA,Proline,the electrical conductance reveal the difference of physiological adaptation in different varieties.

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Available abstract

The flag leaves stress physiological index of four breeds of upland rice were studied on filling stage.The result showed that the activity of superoxide dismutase(SOD),peroxidase(POD),Catalase(CAT) and the content of Proline in drought stronger varieties(Handao15 and Handao 2)were observably higher than drought resistance of the weaker varieties(Handao 3 and Handao 1),and the content of Malondialdehyde(MDA) and the electrical conductivity in drought stronger varieties(Handao 15 and Handao 2) were significantly lower than drought resistance of the weaker varieties(Handao 1 and Handao 3).So the activity of SOD,POD,CAT and the content of MDA,Proline,the electrical conductance reveal the difference of physiological adaptation in different varieties.

Key concepts: Proline, Point of delivery, Malondialdehyde, Catalase, Superoxide dismutase, Drought resistance, Drought stress, Peroxidase

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