บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Ripening of Red Rosa plums: effect of ethylene and 1-methylcyclopropene.

Dong, L., Zhou, H-W., Sonego, L., Lers, A. and Lurie, S.

Australian Journal of Plant Physiology, Volume 28, Number 10, 2001. pp. 1039-1045.

2001

บทคัดย่อ

Ripening of 'Red Rosa' plums: effect of ethylene and 1-methylcyclopropene.

Red Rosa, a Japanese type plum, was treated with 0.1 ppm 1-methylcyclopropene (1-MCP) for 20 h at 20 deg C at harvest and then held at 20 deg C for ripening together with untreated fruits, or placed at 0 deg C storage for 5 weeks. Another batch of plums were exposed to 15 ppm ethylene during storage at 0 deg C. Fruits ripening directly after 1-MCP treatment had lower ethylene production and softened more slowly than untreated fruits. Following storage, both the ethylene-treated and 1-MCP-treated fruits were low in ethylene production and softened more slowly than untreated fruits. They also showed lower exo-polygalacturonase (exo-PG) and endo-glucanase (EGase) activities. Respiration rates, pectin esterase (PE) and endo-PG activities were similar in 1-MCP-treated and control fruits. Cell wall enzyme activities were different amongst the treatments, but did not correlate with the differences in fruit softening. 1-aminocyclopropane-1-carboxylic acid (ACC) oxidase (ACO) activity was highest in ethylene treated fruit during ripening after storage, while the messenger RNA abundance was highest in control fruits during removal from storage. ACC synthase (ACS) activity was higher in control and 1-MCP-treated fruits than in ethylene-treated fruits during ripening after storage, and message abundance was highest at removal from storage in control fruits. ACC content was highest in fruits at removal from storage. The results are discussed in terms of the role of ethylene in ripening of Red Rosa plums.