Effects of harvest dates and post-harvest calcium chloride treatments on physico-chemical characteristics of pear cv. Bartlett.
Farooq Ahmad; Khajawall, M. H.;
Applied Biological Research Year: 1999 Vol: 1 Issue: 1 Pages: 43-46 Ref: 15 ref.
1999
บทคัดย่อ
A study was conducted to assess the effects of harvest dates and post-harvest CaCl2 treatments on physico-chemical characteristics of pear cv. Bartlett [Williams' Bon Chretien]. During 1998-89, fruits grown at Sorope, Jammu and Kashmir, India, were harvested at 105, 107, 110, 113 and 115 days after full bloom (DAFB). Four CaCl2 treatments (0, 4, 8 or 12%) were tested. Fruits were held at ambient temperature (29 plus or minus 2 deg C) for 24 days. Rapid colour development, decline in firmness, less physiological loss in weight, a higher organoleptic rating and more fruit spoilage were observed with a delay in harvesting, especially at 113 and 115 DAFB. Comparatively, low acid content, and higher TSS, total and reducing sugars, and calcium contents were observed in late-harvested fruits. CaCl2 treatment delayed colouration, improved fruit firmness, organoleptic rating, TSS, sugar content, and peel and flesh calcium content, and reduced physiological weight loss, spoilage and acidity in fruits. Har
vesting the fruits at 105 or 107 DAFB and dipping them in 8-12% CaCl2 proved best for enhancing the keeping quality of the fruit.