บทคัดย่องานวิจัย

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Reduction of ethylene-induced physiological disorders of carrots and iceberg lettuce by 1-methylcyclopropene.

Fan, X. and Mattheis, J. P.

HortScience. Volume 35, Number 7. Dec 2000. Pages 1312-1314.

2000

บทคัดย่อ

Reduction of ethylene-induced physiological disorders of carrots and iceberg lettuce by 1-methylcyclopropene.

Whole carrots (Daucus carota L.) and midrib tissues of iceberg lettuce (Lactuca sativa L.) were treated with 42 micromol(.)m-3 MCP, then exposed to ethylene. Exposure to 42 micromol(.)m-3 ethylene at 10 degrees C increased isocoumarin content approximately equal to 40-fold in both peel and pulp of nontreated carrots within 4 days, but treatment with MCP for 4 hours at 20 degrees C before exposure to ethylene prevented isocoumarin accumulation. Ethylene-induced acidity loss and respiration rate increase in carrots were also prevented by MCP treatment. Ethylene treatment (126 micromol(.)m-3) of lettuce at 6 degrees C had induced russet spotting >5% to 10% of the midrib tissue by day 3 and 30% to 35% by day 9, while pretreatment with MCP for 4 hours at 6 degrees C prevented development of russet spotting. The results indicate that ethylene-induced physiological disorders and quality loss in carrots and iceberg lettuce can be prevented by MCP treatment prior to exposure to ethylene.