ISHS Acta Horticulturae 705: V International Walnut Symposium
EVALUATION OF OWN-ROOTED LARA® MULTIPLICATED BY MICROPROPAGATION AND OF NEW JUGLANS REGIA ROOTSTOCKS GRAFTED TO LARA® |
| Authors: | J.P. Prunet, W. Chauvin |
| Keywords: | Juglans regia, micropropagation, rootstocks |
| Abstract:
Lateral-bearing varieties and the new varieties INRA french varieties require the use of vigourous rootstocks. For that reason, Ctifl and the Creysse Research Centre have engaged the selection of such rootstocks within a Juglans regia population obtained by seedlings. So, in order to multiply the identified clones, the conditions of plant production by micropropagation have been investigated and clearly defined. Micropropagation actually well mastered for J. regia allowed the production of the most vigorous Juglans regia. Since 1994, trial at the Creysse Research Centre: comparative trials make possible to verify the agronomical characteristics of these new rootstocks, such as RG 2 (LIBA), RG 15 (CHEREBA) and RG 12 (NOBA) in particular. Own-rooted Lara® have been studied as well, inside the same experimental plot. The conclusion is a good results for RG2 (LIBA), better than the best Juglans regia RA 611 seedlings result. Lara® multiplicated in vitro is more vigorous and a good production in 2003. Still, the total production of Lara® is lower compare Lara® graft the best rootstocks coming from Juglans regia seedlings. | |
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