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2013•Acta Agriculturae Boreali-SinicaRequires access

Physiological Responses of Winter Wheat′s Leaves to Low Temperature Stress

Hou Li-bai

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Abstract

Different cool-resistance varieties were used to experimental material to test relative conductivity,malondialdehyde,soluble protein,proline,soluble sugar content and the activities of superoxide dismutase after 2 hours treatment with 13,7,4,-18,-21 ℃.As the temperature was reduced,MDA and soluble sugar content of wheat leaf increase gradually,the activities of SOD trend is N-shaped wave.After low temperature stress,the soluble protein content of wheat leaves no significant change.The results indicated that M808 and Dongyin0801 have the minimum relative electric conductivity in 21 ℃.MDA content of M808 and Dongyin0801 increased considerably from-18 ℃ to-21 ℃.M808′s activities of SOD has the lowest rate of change in-18 ℃ and-21 ℃.Proline and soluble sugar content of Dongyin0801 has the largest rate of change in-21 ℃.

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What this paper is about

Different cool-resistance varieties were used to experimental material to test relative conductivity,malondialdehyde,soluble protein,proline,soluble sugar content and the activities of superoxide dismutase after 2 hours treatment with 13,7,4,-18,-21 ℃.As the temperature was reduced,MDA and soluble sugar content of wheat leaf increase gradually,the activities of SOD trend is N-shaped wave.After low temperature stress,the soluble protein content of wheat leaves no significant change.The results indicated that M808 and Dongyin0801 have the minimum relative electric conductivity in 21 ℃.MDA content of M808 and Dongyin0801 increased considerably from-18 ℃ to-21 ℃.M808′s activities of SOD has the lowest rate of change in-18 ℃ and-21 ℃.Proline and soluble sugar content of Dongyin0801 has the largest rate of change in-21 ℃.

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Available abstract

Different cool-resistance varieties were used to experimental material to test relative conductivity,malondialdehyde,soluble protein,proline,soluble sugar content and the activities of superoxide dismutase after 2 hours treatment with 13,7,4,-18,-21 ℃.As the temperature was reduced,MDA and soluble sugar content of wheat leaf increase gradually,the activities of SOD trend is N-shaped wave.After low temperature stress,the soluble protein content of wheat leaves no significant change.The results indicated that M808 and Dongyin0801 have the minimum relative electric conductivity in 21 ℃.MDA content of M808 and Dongyin0801 increased considerably from-18 ℃ to-21 ℃.M808′s activities of SOD has the lowest rate of change in-18 ℃ and-21 ℃.Proline and soluble sugar content of Dongyin0801 has the largest rate of change in-21 ℃.

Key concepts: Proline, Malondialdehyde, Sugar, Superoxide dismutase, Chemistry, Winter wheat, Horticulture, Food science

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