ศูนย์นวัตกรรมเทคโนโลยีหลังการเก็บเกี่ยว

Effect of environmental conditions at harvest on the incidence of lenticel damage in mango.

Oosthuyse, S. A.;

Yearbook - South African Mango Growers' Association Year: 1998 Vol: 18 Pages: 15-17 Ref: 11 ref.

1998

บทคัดย่อ

Lenticel damage is a common problem whose incidence is thought to be affected by many of the conditions to which mango fruits are exposed prior to, during and after harvest. The effects on the postharvest incidence of lenticel damage of air temperature, relative humidity, hours of direct solar radiation, amount of wind, and amount of rain on the day of harvest were assessed. Fruits of the cultivars Heidi, Sensation, Kent, Keitt, Tommy Atkins and Zill were harvested weekly from the same trees in an orchard in the Hoedspruit area of South Africa over a period of 4 or 5 weeks. Conditions on the day of harvest were obtained from a weather station situated in the vicinity of the trees used. Lenticel damage incidence was estimated on fruits ripening following commercial packline treatment, cool-storage at 9.5 deg C for 4 weeks, and post-storage ripening at 20 deg C. Strong negative correlations were generally found with maximum temperature, minimum temperature, and Class A Pan evaporation. Strong posi

tive correlations were generally found with maximum humidity. Rain at harvest only occurred with Tommy Atkins. A correlation coefficient of almost 1 was found with the amount of rain. The results clearly indicate that cool, humid or wet conditions on the date of harvest strongly favour the postharvest occurrence of lenticel damage. Conversely, dry, hot conditions discouraged the postharvest occurrence of lenticel damage.