6533b873fe1ef96bd12d5eb4

RESEARCH PRODUCT

Différences de capacités d’induction de la germination de deux pathovars d’orobanche rameuse sur une gamme d’hôtes des familles des brassicacées et fabacées

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Branched broomrape (Phelipanche ramosa (L.) Pomel) is a holoparasite weed causing significant yield losses on several crops, especially in France on winter oilseed rape fields. The ability to induce germination of seeds of branched broomrape, variable between host species, represent an important information to identify the status of weed species present in the crop (host or non-host). In this study, conducted in in vitro conditions, we focused on two botanical families and two dominant pathovars of branched broomrape in France. We show that the host species is the only important explanatory factor of seed germination rate, the latter being not affected by the pathovar. Among the species studied, the birdsfoot trefoil (Lotus corniculatus L.) induce a mean germination rate of almost 90% and could be an interesting candidate as intercrop species in infested plots.