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.