The appearance of fresh fruits and vegetables is a primary criterion in making purchasing decisions. Product appearance is characterized by size, shape, form, color, condition and absence of defects. A wide range of preharvest factors can modulate the appearance of the harvested product. These include: (1) biological factors (pathological, entomological, animal); (2) physiological factors (phys...

HORN. B. W. 1985, Association of Candida gllillier/llolldii with amylolytic filamentous fungi on preharvest corn, Can, J, MicrobioL 31: 19-23, Candida gllillier/nondii var. gllillier/llondii was the dominant yeast isolated from preharvest Georgia corn and comprised 3,6-47.0% of the total fungi as measured by dilution plating. The yeast was confined mainly to kernels visibly molded by filamentou...

Mapping population of recombinant inbred lines (RILs) representing 541 × Ot1-3 cross exhibited wide variations of benzoxazinoid (BX) content in leaves and roots, brown rust resistance, α-amylase activity in the grain, and resistance to preharvest sprouting. QTL mapping of major BX species using a DArT-based map revealed a complex genetic architecture underlying the production of these main seco...

Climate/environment Rootstock/scion Planting design Pruning practices Pest management Irrigation Plant growth regulators Plant nutrition The goal for postharvest physiologists, whether they are working in basic or applied research, is to maximize the postharvest quality of horticultural commodities. Quality relates to several factors that can be commodity specific and mean different things to d...

The objective of this study was to evaluate the effect preharvest application 1-methylcyclopropene (1-MCP) on postharvest dissipation stress watercore incidence and severity rating over 30 d at 20 °C. ‘Jonagold’ trees were untreated or sprayed with 1-MCP one week before harvest. Harvest indices quality factors °C, assessed days 2, 5, 9,15, 20, 30. Fruit treated treatment had lower internal ethy...

The epidemiology of sclerotinia rot of carrot was investigated on carrot ‘Cellobunch’ during 1999 and 2000 in Ontario. Apothecia were first detected in the crop in early August to mid-September, after the carrot canopy closed and after 7–11 days with soil matric potentials between –0.1 and –0.4 bars and soil temperatures between 14 and 23 °C. Ascospores were first detected in mid-July to mid-Au...