Characterisation of resistance to branched broomrape, Phelipanche ramosa, in winter oilseed rape

Autor: M. Leflon, Christophe Véronési, Y. El-Halmouch, Mathieu Gauthier, C. Jestin, R. Delourme, Philippe Simier, F. Labalette, Philippe Delavault
Přispěvatelé: Lab Biol & Pathol Vegetales, SFR QUASAV 4207, PRES Université Nantes Angers Le Mans (UNAM), Fac Sci, Dept Bot, Damanhour University [Egypte], Centre Technique Interprofessionnel des Oléagineux, des Protéagineux et du Chanvre (CETIOM), Org Natl Interprofess Graines & Fruits Oleagnieux, Institut de Génétique, Environnement et Protection des Plantes (IGEPP), Institut National de la Recherche Agronomique (INRA)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-AGROCAMPUS OUEST, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), CETIOM, ONIDOL, PROMOSOL (a federation of INRA), PROMOSOL (a federation of CETIOM), PROMOSOL (a federation of ONIDOL), French Ministry of Education and Research, Terres Inovia, Institut National de la Recherche Agronomique (INRA)-Université de Rennes (UR)-AGROCAMPUS OUEST
Jazyk: angličtina
Rok vydání: 2012
Předmět:
Zdroj: Crop Protection
Crop Protection, Elsevier, 2012, 42, pp.56-63. ⟨10.1016/j.cropro.2012.07.002⟩
Crop Protection, 2012, 42, pp.56-63. ⟨10.1016/j.cropro.2012.07.002⟩
ISSN: 0261-2194
1873-6904
DOI: 10.1016/j.cropro.2012.07.002⟩
Popis: International audience; Over the past decade, Phelipanche ramosa, a weedy parasitic plant (broomrape), has been increasingly infesting winter oilseed rape (WOSR) fields in France. Elite WOSR lines have shown different responses in P. ramosa infested fields, suggesting that genetic variability might be available for breeding programmes targeting broomrape resistance. Ten WOSR genotypes selected for their contrasting response in field experiments were analysed using mini-rhizotron and greenhouse co-culture experiments to determine the components of resistance to broomrape. Partial resistance was revealed at three developmental stages of the parasitic plant. First, at the germination stage, parasite attachment to the roots of some WOSR lines was limited and associated with a low rate of parasite seed germination. This mechanism of parasite avoidance could nevertheless be suppressed under high infestation in mini-rhizotron and greenhouse conditions. Second, at the root attachment stage, limited parasite attachment was observed in mini-rhizotron conditions under low and high infestation, and in greenhouse conditions. Third, after successful parasite attachment, some WOSR genotypes retarded and even disturbed the growth of tubercles, minimising and delaying parasite emergence from the soil. Although the exact mechanisms limiting parasite attachment and tubercle development require further investigation, our findings suggest that, by cumulating various resistance traits in new genotypes to enhance effectiveness and potential durability of resistance, breeding could be a promising control strategy in WOSR. (C) 2012 Elsevier Ltd. All rights reserved.
Databáze: OpenAIRE
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