
TY  - JOUR
A1  - Macnish, A. J. 
A1  - Hofman, P. J. 
A1  - Joyce, D. C. 
A1  - Simons, D. H. 
A1  - Reid, M. S. 
T1  - 1-Methylcyclopropene treatment efficacy in preventing ethylene perception in banana fruit and grevillea and waxflower flowers
JF  - Australian Journal of Experimental Agriculture
JO  - Aust. J. Exp. Agric.
Y1  - 2000
VL  - 40
IS  - 3
SP  - 471
EP  - 481
KW  - 
UR  - https://doi.org/10.1071/EA99120 
N2  - Premature ripening and/or senescence and abscission induced by exposure to ethylene are significant postharvest problems. Banana fruit and grevillea and Geraldton waxflower 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 fruit with 10 nL 1-methylcyclopropene/L for 12 h at 20&#x02DA;C afforded protection against subsequent serial treatments over 13 days of subsets with 100 L ethylene/L for 24 h at 20&#x02DA;C. Protection of Grevillea &#8216;Sylvia&#8217; inflorescences was effective only for 2 days. Thereafter, fruit and inflorescences regained sensitivity to ethylene. In contrast, neither banana fruit nor grevillea inflorescences treated with 10 nL 1-methylcyclopropene/L for 12 h at 2&#x02DA;C were protected against ethylene. 1-Methylcyclopropene binding to ethylene receptors was apparently not achieved at the lower temperature. Increasing the 1-methylcyclopropene concentration to 100 nL/L, applied at 2.5&#x02DA;C to banana fruit, achieved protection against ethylene. Waxflower sprigs treated with 10 nL 1-methylcyclopropene/L for 12 h at 2 or 20&#x02DA;C regained full sensitivity to ethylene after about 2 and 4 days, respectively. In contrast, pulsing waxflower with 0.5 mmol Ag+/L as silver thiosulfate for 12 h at 2 or 20&#x02DA;C afforded protection against ethylene for the 10 days duration of the experiment. 
ER  -

