Effects of different calcium levels in the fruits on the postharvest physiology of ‘Prunus domestica L.’
Rato A.E., Marreiros H.I., Santos A.C.
5th International Postharvest Symposium . Volume of Abstract . Verona, Italy 6-11 June 2004. page 12
2004
บทคัดย่อ
Effects of different calcium levels in the fruits on the postharvest physiology of ‘Prunus domestica L.’
Plum fruits (
Prunusdomestica L.) were grown in a calcareous soil (more fertile) and in a xiste soil (less fertile) with two different type of rootstocks, a more vigorous and a less vigorous one.It is studied the influence of different rootstocks in the calcium concentration of plum fruits.More vigorous rootstocks produced fruits with lower calcium content than less vigorous rootstocks.This effect is more evident in more fertile soils.It was studied the postharvest behaviour of fruits with higher and lower calcium content.Changes in texture and chemical composition of pulp fruits (%acidity, sugars, organic acid and production of ethylene) during cold storage (0-2
°C) were investigated.Ethylene production rate was studied in the fruits after cold storage (10, 17, 24, 31, 38 days)
Fruits with a higher calcium content showed a higher firmness as compared with fruits with a lower calcium content.After cold storage fruits exhibited a lower ethylene production rate which decreases for longer storage periods.After 38 days of cold storage the ethylene production rate decreased about 1/3.