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Enhancement of Drought Resistance of Pomelo Seedlings by Uniconazole

Lei Nie

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Abstract

Pomelo seedlings were foliar sprayed by 100 mg· L-1 uniconazole, and treated with water stress. The results showed that uniconazole treatment could improve leaf ψw and RWC under water stress, and dorought-resistance was enhanced. Uniconazole treatment could also promote leaf SOD, APX activities, AsA, GSH, free proline contents, but had no effect on CAT activity. It suggested that uniconazole treatment increased defensive capacity of membrane lipid peroxidation and stability of membrane, therefore resulted in the enhancement of drought resistance of pomelo seedlings.

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What this paper is about

Pomelo seedlings were foliar sprayed by 100 mg· L-1 uniconazole, and treated with water stress. The results showed that uniconazole treatment could improve leaf ψw and RWC under water stress, and dorought-resistance was enhanced. Uniconazole treatment could also promote leaf SOD, APX activities, AsA, GSH, free proline contents, but had no effect on CAT activity. It suggested that uniconazole treatment increased defensive capacity of membrane lipid peroxidation and stability of membrane, therefore resulted in the enhancement of drought resistance of pomelo seedlings.

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Available abstract

Pomelo seedlings were foliar sprayed by 100 mg· L-1 uniconazole, and treated with water stress. The results showed that uniconazole treatment could improve leaf ψw and RWC under water stress, and dorought-resistance was enhanced. Uniconazole treatment could also promote leaf SOD, APX activities, AsA, GSH, free proline contents, but had no effect on CAT activity. It suggested that uniconazole treatment increased defensive capacity of membrane lipid peroxidation and stability of membrane, therefore resulted in the enhancement of drought resistance of pomelo seedlings.

Key concepts: APX, Proline, Drought resistance, Horticulture, Water stress, Chemistry, Lipid peroxidation, Drought stress

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