Effect of Ca<sup>2+</sup> Foliar Application on Tolerance of Kosteletzkya virginica Seedlings to High Temperature

WANG Guang; QIN Pei; ZAI Xue-Ming

WANG Guang, QIN Pei, ZAI Xue-Ming. Effect of Ca2+ Foliar Application on Tolerance of Kosteletzkya virginica Seedlings to High TemperatureJ. Journal of Ecology and Rural Environment, 2006, 22(3): 41-44.

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Effect of Ca²⁺ Foliar Application on Tolerance of Kosteletzkya virginica Seedlings to High Temperature

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After foliar application with 10 mmol·L^-1 CaCl₂ each day for the first week,Kosteletzkya virginica seedlings were moved into an incubator,kept at 40 ℃ and monitored periodically for related physiological indices.Results show that Ca²⁺ could lower contents of proline and soluble sugar,prevent seedlings from withering and decreasing in root activity.Besides,Ca²⁺ could inhibit the increase of membrane permeability,improve the activity of Ca²⁺-ATPase.Thus,Ca²⁺ improves the tolerance of K.virginica seedlings to heat.

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Effect of Ca2+ Foliar Application on Tolerance of Kosteletzkya virginica Seedlings to High Temperature

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Effect of Ca²⁺ Foliar Application on Tolerance of Kosteletzkya virginica Seedlings to High Temperature