บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Responses of climacteric and suppressed-climacteric plums to treatment with propylene and 1-methylcyclopropene

Nasser Abdi, William B. McGlasson, Paul Holford, Mark Williams and Yosef Mizrahi

Postharvest Biology and Technology, Volume 14, Number 1, September 1998 , pp. 29-39

1998

บทคัดย่อ

Responses of climacteric and suppressed-climacteric plums to treatment with propylene and 1-methylcyclopropene

The aim of this study was to characterise further the ripening behaviour of climacteric (`Gulfruby' and `Beauty') and suppressed-climacteric (`Shiro' and `Rubyred') plums by treating preclimacteric fruit with 1-methylcyclopropene (1-MCP) followed by continuous treatment with propylene. Analyses showed that the development of skin colour was an ethylene-independent phenomenon, whilst aroma production was either ethylene-dependent or ethylene-independent, depending on the cultivar. Typical climacteric patterns of ripening were shown by `Gulfruby' and `Beauty' fruit, as the application of propylene alone advanced the onset of the respiratory and ethylene climacterics whilst 1-MCP delayed these events. `Shiro' and `Rubyred' fruit exhibited suppressed-climacteric patterns or ripening associated with 15¯500-fold less ethylene production than the climacteric cultivars. Since 1-aminocyclopropane-1-carboxylic acid (ACC) concentrations were similar in all four cultivars, it is suggested that the suppressed-climacteric phenotype is the result of an impaired ability of the fruit to convert ACC to ethylene. Fruit of these cultivars treated with 1-MCP did not develop an ethylene or respiratory climacteric unless exogenous propylene was applied. We suggest that the inability of 1-MCP treated, suppressed-climacteric fruit to develop a climacteric results from an impaired ability of the fruit to perceive ethylene and to produce new receptors.