Effects of 1-Methylcyclopropene and Controlled Atmosphere on Ethylene Synthesis and Quality Attributes of Avocado cvs. Edranol and Fuerte

Table 2

Ethylene production and respiration rates immediately after 30 and 50 days storage at 5°C in “Fuerte” avocado.

Harvest	Storage time (days)	Treatment	Ethylene production (μLC2H4kg^−1h^−1)	Respiration rates (mLCO2kg^−1h^−1)
			Mean ± s.d	Mean ± s.d
I	0	Control	0.05 ± 0.11	36.7 ± 3.59
	30 d	RA	3.68 ± 3.29^b	72.7 ± 46.9^b
		CA	0.00 ± 0.00^a	34.4 ± 3.49^a
		RA + 1-MCP	0.31 ± 0.59^a	21.0 ± 3.22^a
	50 d	RA	6.34 ± 4.87^b	72.4 ± 4.95^b
		CA	0.00 ± 0.00^a	36.3 ± 2.93^a
		RA + 1-MCP	0.83 ± 1.30^a	27.7 ± 5.18^a
II	0	Control	0.00 ± 0.00	43.9 ± 11.30
	30 d	RA	2.93 ± 2.48^b	43.3 ± 7.07^b
		CA	0.00 ± 0.00^a	37.9 ± 9.59^ab
		RA + 1-MCP	0.00 ± 0.00^a	31.3 ± 7.07^a
	50 d	RA	5.47 ± 4.77^b	53.5 ± 5.01^b
		CA	0.00 ± 0.00^a	55.4 ± 9.98^b
		RA + 1-MCP	1.39 ± 0.89^a	32.1 ± 6.16^a
Interaction
Treatment (A)			<0.0001	<0.0001
Storage time (B)			<0.0001	0.0340
Harvest (C)			0.0102	0.5261
A × B			0.0647	0.6651
A × C			0.6585	<0.0001
B × C			0.7817	0.2353
A × B × C			0.8859	0.2764

RA: regular air (85% Relative humidity); CA: controlled atmosphere (4% O₂ + 6% CO₂); 1-MCP: 1-methylcyclopropene (300ppb); s.d: standard deviation. I: Early maturity stage; II: advanced maturity stage. d: days at 5°C. Each value is the mean of ten fruits that were individually measured. Different letters within each storage time and harvest represents significant differences at as determined by the LSD test. Factor: Treatment: RA, CA, RA + 1-MCP. Storage time: fruits storage for 30 and 50 days at 5°C. Harvest: two harvest, early and advanced maturity stage. Factor significant, p<0.05.