Elisa Marguerit is an associate professor in Viticulture at Bordeaux Sciences Agro. Her lectures deal with viticulture practices such as fertilization and vigor management, experimental design and quantitative genetics. Her research activities aim to study the rootstoks responses to water deficit and to identify the genetic architecture for some adaptative traits. She get her PhD in 2010, dealing with the genetic architecture of water deficit responses induced by grapevine rootstock. One particular genetic region was detected as involved in the water extraction capacity.
She coordinates an original experimental vineyard: the GreffAdapt plot, created to get and actualize the agronomical characteristics of 55 rootstocks. These rootstocks were grafted with 5 scions. Overall, Greffadapt is a very unique experimental facility to speed up the selection of rootstocks and to analyze the relationship between confered vigour and drought tolerance, two major selection criteria for rootstocks. The aim is to characterize existing rootstocks already used in foreign countries or available in germplasm collections, to allow a faster enlargement of the rootstock range available for vinegrowers. This work is complementary to the selection of new bred genotypes. In the frame of this second approach, she coordinates crosses to get more drought tolerant rootstocks and she studies particularly the Vitis berlandieri genetic background.
Elisa Marguerit has evaluated the vegetative development, yield component and the maturity related traits of 88 clones of Petit Verdot in a repository at Château Luchey Halde.
Rootstock, water deficit tolerance, rootstock-scion interactions, limestone chlorosis tolerance, genetic architecture, plasticity of responses to environment variations