Ethylene, 1-MCP and the Antitranspirant Effect of Active Compound-Film Forming Blend
DOI:
https://doi.org/10.18034/mjmbr.v4i2.433Keywords:
Leaf Shine, Abscisic Acid, Salicylic Acid, Sodium nitroprusside, Stomatal conductanceAbstract
Pot plant production in greenhouse is most of the time under high relative humidity and frequent irrigation, whereas during shipment and retailing plants may be exposed to high temperature and infrequent irrigation. These unfavorable conditions often cause water loss, desiccation of plants and short shelf life. To reduce the deteriorating effect of water loss, application of antitranspirants is one of the integral measures to take. In the first experiment, we evaluated the antitranspirant effect of two physiologically active gaseous compounds Ethylene and 1-MCP (1-methylcyclopropane) and their interaction with the successful active compound ABA (Abscisic acid). In the second experiment, with the aim of discovering a more potent antitranspirant, we evaluated the efficacy of an active compound-film forming blend. Excised leaves of Spathiphyllum sweet checo were sprayed with different preparations. Weight loss (transpiration) as gram of water per gram of initial leaf weight and stomatal conductance were measured. In the first experiment, 10 ppm Ethylene and 500 ppb 1-MCP found to reduce water loss conspicuously and negatively interacted with 1.5 mM ABA. In the second experiment, a potent mixture of active compound-film forming antitranspirants: ABA 1.5 mM + Leaf Shine 1:20 followed by SA (Salicylic acid) 5 mM + Leaf Shine 1:20 and SNP (Sodium nitroprusside) 200 µM + Leaf Shine 1:20 were discovered. In both experiments, significant positive correlations were found between weight loss and stomatal conductance (R= 0.975, 0.987, P<0.05).
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