บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

1-Methylcyclopropene treatment efficacy in preventing ethylene perception in banana fruit and grevillea and waxflower flowers.

Macnish, A. J., Joyce, D. C., Hofman, P. J., Simons, D. H. and Reid, M. S.

Australian Journal of Experimental Agriculture Year: 2000 Vol: 40 Issue: 3 Pages: 471-481 Ref: 35 ref.

2000

บทคัดย่อ

1-Methylcyclopropene treatment efficacy in preventing ethylene perception in banana fruit and grevillea and waxflower flowers.

Premature ripening and/or senescence and abscission induced by exposure to ethylene are significant postharvest problems. Banana fruits and Grevillea cv. Sylvia and Chamelaucium uncinatum (cultivars Lollypop, Alba and Mid Pink) cut flowers are among affected commodities. Treatment with 1-methylcyclopropene gas or silver thiosulfate liquid can be used to prevent ethylene perception and response. Treatment of banana fruits with 10 nL 1-methylcyclopropene/L for 12 h at 20 deg C afforded protection against subsequent serial treatments over 13 days of subsets with 100 micro L ethylene/L for 24 h at 20 deg C. Protection of Grevillea inflorescences was effective only for 2 days. Thereafter, inflorescences regained sensitivity to ethylene. In contrast, neither banana fruits nor Grevillea inflorescences treated with 10 nL 1-methylcyclopropene/L for 12 h at 2 deg C were protected against ethylene. 1-Methylcyclopropene binding to ethylene receptors was apparently not achieved at the lower temperature. Incr

easing the 1-methylcyclopropene concentration to 100 nL/L, applied at 2.5 deg C to banana fruits, achieved protection against ethylene. C. uncinatum treated with 10 nL 1-methylcyclopropene/L for 12 h at 2 or 20 deg C regained full sensitivity to ethylene after about 2 and 4 days, respectively. In contrast, pulsing these flowers with 0.5 mmol Ag+/L as silver thiosulfate for 12 h at 2 or 20 deg C afforded protection against ethylene for the 10 days duration of the experiment.