Pre-harvest effect of AVG on quality of nectarine Misky cv. fruit at harvest and Post harvest
Abstract
Nectarines are one of the stone fruit which is fruit ripen and deteriorate rapidity at ambient temperature. thus to slow these processes cold storage is used. Beside that apply Products to slow the ripening process such as aminoethoxyvinylglycine (AVG) in term ReTain® (15% AVG) used for prevention of pre-harvest fruit drop and for improving fruit quality in most fruit. This study was carried out in Complete Randomized Block Design with two factors and three replication to determine the effects of preharvest aminoethoxyvinylglycine (AVG) applications in different doses on the fruit quality of local nectarine Misky cv. during cold storage. Trees (leaves and fruits) were sprayed with AVG at four levels (0, 75, 150 and 300 mg.l-1) three weeks before the estimated harvest date. Fruit quality parameters were measured at harvest (fruit width, fruit length and respiration rate) and fruit firmness, TSS, total sugars, titratable acidity(TA), vitamin C, fruit weight loss and decay% parameters were determined after harvest at 4 and 8weeks storage at 0 ±1° C and 85% - 90% RH. Applications of AVG at all doses improved fruit width and length and decreased rate of respiration at harvest, besides significant maintenance of fruit firmness, titratable acidity and vitamin C. However, TSS, total sugars, fruit weight loss and decay significantly decreased compared to untreated fruit during storage AT storage duration the firmness, titratable acidity and vitamin C was reduced,Downloads
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