0000000000138801
AUTHOR
Michel Pitrat
The control of soil borne vascular diseases: Limits of genetic resistance of cultivars and rootstocks for controlling Fusarium oxysporum f. sp. melonis (melon) and Verticillium sp. (eggplant)
After using resistant cultivars or resistant rootstocks for many years to control soil-borne pathogenic fungi causing wilt disease, growers observe more and more frequently wilt like symptoms in their melon and eggplant cultures. Ctifl, in close collaboration with INRA, regional extension services, and seed companies, set up a study designed to investigate the causative pathological agents. The results show the prevalence of Fusarium oxysporum f. sp. melonis race 1-2 yellowing on melon and of Verticillium dahlia on eggplant. Both pathogens are often found together with other pathogenic soil fungi, which act as aggravating factors. The isolates of F. oxysporum f. sp. melonis collected from i…
Fusarium oxysporum f. sp. melonis chez le melon, enseignements issus du projet VASCUlég
Fusarium wilt of melon, caused by Fusariumoxysporum f.sp. melonis (F.o.melonis),is still a major problem for growers. Aresearch programme was therefore developpedincluding 23 partners (VASCUlég).Analysing the situation revealed that thebioagressors are adapting, particularlyF.o.melonis race 1.2 whether it be on its ownor associated with other pathogens. Molecularcharacterisation of the F.o.melonisstrains shows strong genetic diversity.However, new sources of resistance to therace 1.2 of F.o.melonis were identified. Thisresult must be used in combination with acertain number of other complementarytechniques tested within the framework ofthe project, such as the cropping system,biofumigation,…