Effect of Calcium Chloride, ABA and Fertilizer Concentration on Low Temperature Resistance of Aglaonema and Philodendron

Calcium chloride treeatments reduced chilling injury and cold sensitivity of Aglaonema. The effect of calcium chloride has been evaluated on chilling sensitive Aglaonema. Electrical conductivity was used for asssessing the degree of chilling injury. Exposure of Aglaonema to 5℃ for 2 days resulted in a 40% electrolyte leakage and induced irreversible chilling injury. The plants gained the best protection against chilling injury by pretreatment with 0.1% calcium chloride for 2 days.Calcium chloride helped the plant maintain the intergrity of cell membrane and thus reduced the leakage. The effect of ABA has been evaluated on chilling sensitive Aglaonema and Philodendron. ＂Maria＂ and ＂Golden Pride＂ gained the best protection against chilling injury by treatment with 20mg/l ABA. Aglaonema and Philodendron were treated with different nutrition level of double (2J), full (J), half (1/2J) and quater (1/4J) strength Johnson's solution. The optimum concentration of fertilizer varied depending on cultivars.

並列關鍵字

Aglaonema ； Philodendron ； Chilling Injury ； Calciun ； ABA ； Fertilizer concentration

國際替代計量

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