title: Influence of 1-methylcyclopropene on ripening, storage life, and volatile production by d'Anjou cv. pear fruit.
abstract: d'Anjou cv. pear fruit (Pyrus communis L.) exposed at harvest to 0, 0.42, 4.2, or 42 micromol m(-)(3) 1-methylcyclopropene (1-MCP) for 12 h at 20 degrees C were stored at 1 degrees C for up to 8 months. After storage, half of the fruit was continuously exposed to ethylene (0.45 or 4-18 mmol m(-)(3)) for 7 days at 20 degrees C. All fruit treated with 1-MCP had lower respiration and ethylene production compared to untreated controls. Fruit quality changes were delayed following 1-MCP treatment, as was development of superficial scald and peel yellowing. The duration of 1-MCP-induced responses was dependent on 1-MCP treatment concentration. When 1-MCP-treated fruit began to ripen, softening and production of volatile compounds proceeded similar to that of untreated fruit. Post-storage ethylene exposure did not consistently stimulate ripening of fruit previously treated with 1-MCP. Efficacy of ethylene treatment depended on 1-MCP concentration and storage duration.
authors.affiliation: USDA, ARS Tree Fruit Research Laboratory, 1104 N. Western Avenue, Wenatchee, Washington 98801, USA.
authors.forename: Luiz C
authors.initials: LC
authors.lastname: Argenta
authors.forename: Xuetong
authors.initials: X
authors.lastname: Fan
authors.forename: James P
authors.initials: JP
authors.lastname: Mattheis
mesh_terms: D003521:Cyclopropanes / Q000008:administration & dosage / Q000494:pharmacology*; D004305:Dose-Response Relationship, Drug; D005030:Ethylenes / Q000494:pharmacology; D005519:Food Preservation; D005638:Fruit / Q000187:drug effects / Q000254:growth & development* / Q000378:metabolism*; D031989:Pyrus / Q000187:drug effects / Q000254:growth & development* / Q000378:metabolism*; D011786:Quality Control; D013997:Time Factors; D014835:Volatilization
chemical_list: D003521:Cyclopropanes; D005030:Ethylenes; C036216:ethylene; C412563:1-methylcyclopropene