บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Crop load effects on the cold storage of peaches. II. Effect on biochemical characteristics of the fruits.

Saini, R. S.; Gurcharan Singh; Chanana, Y. R.;

Haryana Journal of Horticultural Sciences

2001

บทคัดย่อ

Crop load effects on the cold storage of peaches. II. Effect on biochemical characteristics of the fruits.

The effects of chemical and hand thinning on the subsequent postharvest storage behaviour of peach (cultivars Shan-i-Punjab and Partap) were studied at Ludhiana, Punjab, India [date not given]. All chemical (spraying of 4, 8, and 12% urea or ammonium thiosulfate at full bloom or after fruit set) and hand thinning (thinning of flowers at full bloom and fruits before pit hardening to maintain a 10-12 cm spacing between flowers/fruits) treatments increased the total soluble solids and total sugar contents of fruits; however, hand thinning at full bloom was most effective. There was a progressive increase in total soluble solid and sugar contents with storage (0.3-3.0 deg C and 85-90% RH) period of up to 12 days. There was a significant increase in acidity under chemical thinning treatments. Hand thinning at both the stages reduced acidity. The acidity of fruits decreased with storage of up to 12 days. Total soluble solids (TSS)/acid ratio was reduced by all chemical thinning treatments particularly when applied at higher rates. However, hand thinning at both stages significantly increased TSS/acid ratio. There was a progressive increase in TSS/acid ratio with enhanced storage period of up to 12 days. The overall quality of Shan-i-Punjab was superior over that of Partap.