The relationship between chilling requirement and temperature as it affects the rate of deacclimation was examined for dormant cuttings of Vitis vinifera, V. aestivalis, V. amurensis and V. riparia. The results of the study demonstrate that as winter progresses, the sensitivity of grapevine buds to temperature increases, and highlights a link between dormancy state and loss of winter hardiness. The kinetics of this process also describe early bud phenology. With these results, it will be possible to model the response of buds to current and future climate conditions. This work is particularly important in predicting potential losses due to Midwinter warming events that are expected to become more frequent under climate change.
Al Kovaleski graduated with an Agronomic Engineering degree from the Federal University of Rio Grande do Sul, Brazil in 2011 followed by a Master’s degree in Horticultural Sciences from University of Florida, USA in 2014. He obtained his PhD in Horticultural Biology at Cornell University, under the guidance of Dr. Bruce Reisch and Dr. Jason Londo. Al is currently a postdoctoral researcher with Dr. Jason Londo at USDA – Agricultural Research Service – Grape Genetics Research Unit.
Al studies bud development and off-season physiology of woody perennials. He makes use of modelling approaches along with transcriptomics to help unravel the complexity of climate effects on fruit crops and natural forests.