Author Archives: tem2@cornell.edu

Grape mapping populations reveal genetic variation in bloom and fruit development

by Tim Martinson, Al Kovaleski, and Bruce Reisch On June 29, I photographed clusters from Bruce Reisch’s three Vitisgen mapping populations. Parents are Cornell hybrid cultivar Horizon (with perfect flowers), Illinois 547-1 (a male vine),  Vitis cinerea (late blooming male … Continue reading

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Getting the Perfect Cluster Shape: Defining Table & Wine Grape Traits with DNA Markers

Getting the Perfect Cluster Shape: Defining Table & Wine Grape Traits with DNA Markers USDA Scientist Rachel Naegele,  UM professor Matt Clark, and Cornell Extension Associate Tim Martinson describe how image analysis is being used in the VitisGen2 project on mapping … Continue reading

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Quantitative Trait Loci Linked to Downy Mildew Resistance

VitisGen2 researchers Konstantin Divilov, Paola Barba, Lance Cadle-Davidson, and Bruce Reisch found multiple quantitative trait loci associated with downy mildew sporulation and hypersensitive response in hybrid grape families using a single phenotype model. Read full article here    

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