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Showing 1 to 20 of 20 for “"Apple Cultivars"”.
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Evaluation of rootstock and crop load effects on the performance of `Gibson Golden Delicious' and three scab-resistant apple cultivars
… the 20th century, Iowa ranked sixth in national apple production. Iowa currently provides about 15 percent of the 1.3 million bushels of fresh apples eaten by Iowans annually (Pirog, 1999) and is ranked at 28th in the nation in production. The reduction in rank was mostly due to the Armistice Day …
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THE APPLE SCAB DILEMMA: FROM STRATEGIES TO COPE WITH Venturia inaequalis DAMAGES TO THE RISK OF THE EMERGING PATHOGEN Venturia asperata ON RESISTANT APPLE CULTIVARS
Apple scab, caused by Venturia inaequalis, is the most significant disease affecting apple trees. It can negatively impact both plant growth and fruit quality, both in the orchard and during postharvest storage. Various approaches can be employed to mitigate its effects. The experimental activity …
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Cytokinins tolerance and in vitro selection for dwarfism in apple (Malus x domestica Borkh.)
… system was developed for leaf segments of six apple (Malus Xdomestica Borkh) cultivars ('Wijcik', 'McIntosh', 'Macspur', 'Regal Gala' and 'M 26') grown in vitro using modified Murashige and Skoog (MS) medium supplemented with N-phenyl-N$\sp\prime$ 1,2,3,-Thidiazuron (TDZ). TDZ was found …
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Effects of Hydroxycinnamates and Exogenous Yeast Assimilable Nitrogen on Cider Aroma and Fermentation Performance
Heritage apple cultivars for cider-making are often distinguished by a high concentration of tannins (phenolic compounds), and/or acid. The phenolic content of some cider apples far exceeds that of white wine, however most cider fermentation practices are directly taken from white winemaking, not …
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Differences in lipoxygenase activity as related to cultivar differences in superficial scald of apples
… and superficial scald was studied in the four apple cultivars (Malus domesticus Borkh.), Granny Smith (GS), Red Delicious (RD), Golden Delicious (GD) and York (YK) to determine if LOX is the genetic source of superficial scald or a means of predicting % scalded fruit. For 1993, three harvests …
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The Effect of Fungicide Residues and Yeast Assimilable Nitrogen on Fermentation Kinetics and H2S Production during Cider Fermentation
… relationships between the unique chemistry of apples and production of hydrogen sulfide (H2S) in cider fermentations. Yeast assimilable nitrogen (YAN) concentration and composition and residual fungicides influence H2S production by yeast during fermentation, but these factors have to date only …
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Virginia-grown Cider: How do Cultivar and Fermentation Strategies affect Cider Chemistry, Flavor and Consumer Valuation?
… management. This study investigates how apple cultivar and yeast inoculation affect the chemical and sensory properties of cider. Four ciders were produced in triplicate using combinations of two different apple cultivars - Harrison, a cider cultivar and GoldRush, a dessert cultivar - and …
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Managing Apple Maturity and Storage to Increase the Quality of Virginia Hard Ciders
… storage temperatures and durations in apple cultivars Dabinett, Brown Snout, and York impacted fruit quality as well as the chemistry of the juice and cider. Harvest intervals of two weeks before maturity, at maturity, and 2 weeks after maturity resulted in significant differences in …
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Developing Novel Management Options for Pear Fire Blight and Apple Bitter Rot with Characterization of Apple European Canker in Virginia
… of various diseases affecting pome fruits like apples and pears is crucial for sustaining production. This study amalgamates findings from three distinct disease investigations to propose an integrated approach to their management. Firstly, in pursuit of mitigating shoot blight severity caused …
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Characterization of malus germplasm and QTL mapping of fruit quality traits
… diversity, as well as breed and select future apple cultivars. Germplasm characterization can reveal knowledge of genetic relatedness of accessions and is important towards the goal of increasing this genetic knowledge. This can lead to more efficient germplasm management and efficiency in …
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Management Strategies for Natural Cider Fermentation: Effects of sulfite addition and acidification in high- and low- tannin cultivars
Virginia is the largest apple producing state in the Southeast region of the United States and ranks 10th in most cideries in the US. Natural, or un-inoculated, fermentation methods are of interest to cider producers due to the potential for generating unique and complex aromas and flavors via …
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Exploring the genetic mechanisms underlying superficial scald development and prevention in apple fruit during postharvest storage.
Apple is one of the most valuable fruit consumed worldwide due to its excellent quality features and high degree of acceptation by consumers. However, apples are susceptible to various postharvest disorders, leading to significant economic losses. To slow down food decay and provide constant fresh …
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Development of diagnostic tools to predict incidence of bitter pit during apple storage
… is an important physiological disorder of many apple cultivars where the low uptake and poor distribution of calcium within the cortex of apples pervades. Controlled atmosphere storage and application of 1-MCP (SmartFreshSM) can delay the onset of bitter pit symptoms by delaying maturity and …
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Unraveling Molecular Mechanisms Regulating Dormancy and Bloom Time in Apple (Malus × domestica Borkh)
… of deciduous woody perennials, including apple, to cope with the low temperatures during winter. The release from dormancy and subsequent budburst in apple can only occur after fulfillment of chilling and heat requirements. In the Mid-Atlantic region, dormancy release and bud break of …
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Discovery and dissemination of new knowledge in food science: Analytical methods for quantification of polyphenols and amino acids in fruits and the use of mobile phone-based instructional technology in food science education
… results of these methods. Amino acids in apple (Malus × domestica Borkh.) juice not only influence the quality of fermented cider through fermentation kinetics but also impact the flavor of the cider through yeast metabolism. Due to recent advances in analytical instrumentation, amino …
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Respiratory behaviour and quality attributes of fresh apple slices in modified atmosphere systems
… acid (5%) - treated, peeled, cored and sliced apples in modified atmospheres were studied in a two part investigation. Firstly, respiratory behaviour of slices of New Zealand Granny Smith and British Columbia grown Newtown apples at different temperatures (1, 5, 10 & 15°C) was studied in sealed …
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Sensor based determination of the fruit bearing capacity in Malus x domestica (Borkh.) aimed at precise crop load management
… this purpose, crop load management practices in apples intend to reduce the number of fruit per tree in order to (i) optimise the carbon supply to demand balance and the (ii) fruit quality in the current season, and (iii) ensure flower bud formation for the following season. Currently, crop load …