The levels of free, perchloric acid-soluble conjugated and perchloric acid-insoluble bound polyamines were determined in pericarp and seeds of `Muscat Bailey A' grapes (Vitis labrusca L. Vitis vinifera L.) during development and ripening. In both, the pericarp and seeds, putrescine was the predominant polyamine in the three fractions, and the bound polyamine level was the highest of the fractio...

Olive fruits and oils contain an array of compounds that contribute to their sensory and nutritional properties. Phenolic compounds in virgin oil and olive-derived products have been proven to be highly beneficial for human health, eliciting increasing attention from the food industry and consumers. Although phenolic compounds in olive fruit and oil have been extensively investigated, allowing ...

Apple is one of the most important fruits in temperate zones with a long post-harvest life during cold storage. A factorial experiment, in a randomized completely block design was used to investigate the preharvest application of Iron (0, 500 and 1000 mg Fe-EDDHA per tree) and nitrogen (0, 48 and 96 g ammonium nitrate per tree( on some postharvest qualitative characteristics in "Red spur" and "...

By Zahi Kanaan-Atallah, Ph.D. Washington State University May 2003 Chair: Dennis A. Johnson Sclerotinia sclerotiorum (Lib.) de Bary is a cosmopolitan, homothallic and necrotrophic ascomycetous fungus dispersed by airborne ascospores and soilborne sclerotia. It causes disease in over 400 host species. A significant correlation between potato yield losses and stem rot incidence has not been obser...

Bloom thinning is an important practice that influences the profitability of orchard. Hence, we assessed effect chemical bloom on efficiency and fruit quality ‘RubyS’ apples. Lime sulfur was applied as a agent at 1, 1 + 3, 2 4 days after full (DAFB), non-bloom trees were used controls. Compared to control treatments DAFB DAFB, application 3 greatly decreased number fruits per cluster in both te...

growth in plants is defined as irreversible increase in volume and size. these changes are varied depending on stage of growth and physiological activity of the fruit tree. this research was conducted to determine the duration period of fruit growth and development and to come up with a mathematical model representing the relationship between fruit diameter, volume, and fruit fresh and dry weig...

Humic acids are the most active components of soil organic matter and have been shown to have an hormone-like activity thus stimulating plant growth. The objective of this work was to verify the quantitative and qualitative yield responses of the table grape cv. Italia after the application of a humic acid at various phenological stages. The humic acid used in this study has been extracted from...