Appellation Cornell
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Appellation Cornell is a quarterly newsletter produced by Cornell College of Ag and Life Sciences, School of Integrative Plant Science (SIPS), Horticulture, Viticulture and Enology. The newsletter features in-depth news about research, teaching, and extension, and profiles of faculty, students, and industry.
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Item A Novel Grape Downy Mildew Resistance Locus from Vitis rupestrisPodolec, Michelle (Cornell University, 2021-03)USDA Scientist Jason Londo, based at Cornell AgriTech identified a new genetic DNA marker associated with downy mildew resistance. This new locus can be incorporated into grape breeding programs.Item It’s all in your head(space). Researchers invent automatable method to measure free S02 in winePodolec, Michelle (Cornell University, 2021-05)The Sacks lab presents a new and easily automated method of measuring "truly" free S02 using headspace gas chromatography (HS-GC).Item Determining which vegetative index is best for your vineyardPodolec, Michelle (Cornell University, 2021-08)Tractor-mounted sensors use optical sensing to measure canopy fill. This study compared different combinations of wavelengths that comprise different "vegetative indexes".Item Using cell phones to obtain accurate prebloom cluster countsPodolec, Michelle (Cornell University, 2021-08)Viticulturist Justine Vanden Heuvel and engineering professor Kirstin Peterson devise low-cost procedure to count clusters for crop estimation.Item Elimination of the Crown Gall Pathogen, Agrobacterium vitis, from Systematically Infected Grapevines by Tissue CultureWiepz, Rebecca (Cornell University, 2020-05)Recently-retired scientist Tom Burr's program successfully eliminates crown gall through tissue culture and use of the sensitive 'magnetic capture hybridization' test developed by the Burr laboratory.Item X-ray imaging allows nondestructive investigation of grape bud morphology and freezingWiepz, Rebecca (Cornell University, 2020-03)The use of microtomography (3D X-ray imaging) allowed Grad student Al Kovaleski and USDA scientist Jason Londo to track changes in bud structure during deacclimation and freezing events.Item A New, Satellite NDVI-Based Sampling Protocol for Grape Maturation MonitoringWiepz, Rebecca (Cornell University, 2020-05)Cornell Extension Educator Jim Meyers, working with Justine Vanden Heuvel's program and E. J. Gallo scientists, developed an image analysis-based method for using Landsat satellite images to select single, representative location for grape maturity sampling in Central Valley vineyards - greatly reducing the its cost, while improving accuracy.Item Economic Studies Reinforce Efforts to Safeguard Specialty Crops in the United StatesPodolec, Michelle (Cornell University, 2021-03)Cornell virologist Marc Fuchs and collaborators documented significant economic impact of 'clean plant' programs in grapes and other specialty crops.Item Grape mapping populations reveal genetic variation in bloom and fruit developmentMartinson, Timothy A.; Kovaleski, Al; Reisch, Bruce (Cornell University, 2020-08)Bruce Reisch's three related mapping populations are helping discover genetic markers for a variety of traits such as timing of bloom and fruit development.Item Construction of a high-density linkage map and QTL detection of downy mildew resistance in Vitis aestivalis-derived ‘Norton’van Zoeren, Janet (Cornell University, 2019-05)By combining single nucleotide polymorphisms (SNP) and simple sequence repeats (SSR)markers, a genetic locus was found that contributes 34% of the phenotypic variance in Norton-derived grapevines’ resistance to downy mildew.Item Modeling the Impacts of Weather and Cultural Factors on Rotundone Concentration in Cool-climate Noiret Wine GrapesWiepz, Rebecca (Cornell University, 2019-11)Justine Vanden Heuvel, professor of viticulture at Cornell, collaborated with Penn State colleagues to model the viticultural, soil, and weather variables that influence accumulation of rotundone, the compound responsible for the 'black pepper' aroma associated with the Cornell wine grape cultivar "Noiret".Item The Influences of Music on Perception of Oaked Wines - a Tasting Room Case Study in the U.S. Finger Lakes RegionWiepz, Rebecca (Cornell University, 2019-11)Kathy Latour, associate professor of services marketing in the Cornell School of Hotel Administration, investigated how complementary music affected the tasting room experience and wine sensory characteristics at a Finger Lakes winery.Item Considerations on Spatial Crop Load Mappingvan Zoeren, Janet (Cornell University, 2019-08)James Taylor, of the Efficient Vineyard Program, discussing how cost- and time-effective methods to spatially map crop load across the vineyard could provide a decision support system to help managers apply the best shoot and crop thinning practices.Item Deconstructing cold hardiness: variation in supercooling ability and chilling requirements in the wild grapevine Vitis ripariavan Zoeren, Janet (Cornell University, 2019-08)Jason Londo, Geneva-based USDA-ARS scientist, examined 43 Vitis riparia accessions to examine cold-hardiness traits that decrease the likelihood of winter injury, including low mid-winter bud freezing temperatures, high chilling requirements, and reduced deacclimation rates.Item Palissage Reduces Cluster Zone Lateral Shoots Compared to Hedgingvan Zoeren, Janet (Cornell University, 2018-11)Cornell Masters' recipient Justin France, Ph.D. student Ming-Yi Chou and viticulture professor Justine Vanden Heuvel assessed the value of palissage techniques of wrapping and tucking vine shoots as an alternative to hedging.Item Single and multiple phenotype QTL analyses of downy mildew resistance in interspecific grapevinesvan Zoeren, Janet (Cornell University, 2019-03)Konstantin Divilov, who graduated from Cornell with a PhD in '17, Paola Barba, and Cornell professors Lance Cadle-Davidson and Bruce Reisch evaluated genetic markers to look for durable downy mildew resistance in grapes.Item Control of Sour Rot via Chemical and Canopy Management TechniquesKallas, Raquel (Cornell University, 2018-08)Recent PhD recipient Megan Hall, plant pathologist Wayne Wilcox and entomologist Greg Loeb collaborated in evaluating integrated insect and pathogen control practices to manage sour rot and Drosophila.Item A rapid, sensitive and inexpensive method for detection of grapevine red blotch virusMartinson, Timothy E. (Cornell University, 2019-05)Detecting red blotch virus in a vineyard is now possible using a new technique called “Loop-mediated isothermal amplification” (LAMP), a simplified testing method that doesn’t require DNA extraction, costs less than a dollar per sample, and can be completed within an hour.Item Yeast Assimilable Nitrogen (YAN) Optimization for Cool-Climate Rieslingvan Zoeren, Janet (Cornell University, 2019-03)Cornell graduate (MS '16) Camila Tahim and enology professor Anna Katharine Mansfield assessed the value of nitrogen supplementation in wines made from Riesling grapes grown in the finger lakes region.Item Impact of Fruit-Zone Leaf Removal on Rotundone Concentration in NoiretKallas, Raquel (Cornell University, 2018-03)Impact of Fruit-Zone Leaf Removal on Rotundone Concentration in Noiret