Projects in the pipeline



Having its own laboratory and experimental greenhouse, Guillaume Nurseries has been working for more than twenty years along with research institutes, universities and private companies that all take part in research programmes aimed at improving the vine.

  Greenwood grafting :

Guillaume Nurseries took part in the very beginning of the vine greenwood-grafting programme led at that time by the INRA of Dijon. This interesting but costly technique did not have the commercial development expected but has nevertheless become an essential tool for the propagation of the basic plant material used in experimentation .


Premunition :

This biocontrol technique against the virus causing serious vine deformation has been developed by Guillaume Nurseries for more than 15 years with exclusive rights. Premunition consists in screening and isolating hypovirulent strains of the virus that will then be inoculated into healthy plants so as to make them become resistant to the hypervirulent strains found in contaminated soils. This work has been followed by the INRA of Colmar and is now producing very interesting results; it makes it possible for wine-growers to carry out successful replacements in areas infected by the virus .


Mycorrhization :

Like most cultivated plant species, the vine forms an association with soil fungi, thus creating endomycorrhizae too small for the eye to see. The fungus first develops inside the root and then outside, thus enabling it to explore a larger volume of soil than a non-mycorrhized root. This fungus-root association is a perfect and long-lasting symbiosis that benefits both partners. The plant supplies the fungus with carbohydrates essential for its development and in return the fungus takes up rather immobile elements (phosphorus, trace elements) for the plant to use. Guillaume Nurseries has been offering for many years potted mycorrhized plants for replacements and planting .