caa a22 4500 475795865 CHVBK 20180406123724.0 cr unu---uuuuu 170329e20000401xx s 000 0 eng 10.1007/s001220051379 doi (NATIONALLICENCE)springer-10.1007/s001220051379 Identification of QTLs involved in the resistance to South American leaf blight (Microcyclus ulei) in the rubber tree [Elektronische Daten] [D. Lespinasse, L. Grivet, V. Troispoux, M. Rodier-Goud, F. Pinard, M. Seguin] Abstract : South American leaf blight (SALB) is a disease of the rubber tree caused by the fungus Microcyclus ulei. Quantitative trait loci (QTLs) for resistance were mapped using 195 F1 progeny individuals derived from the cross between a susceptible cultivated clone, PB260, and a resistant clone, RO38, derived from interspecific hybridization. The resistance level of the progeny individuals was evaluated in controlled conditions. The reaction type (RT) and the lesion diameter (LD) were measured on immature leaves after artificial inoculation of the fungus. Five different strains of the fungus were used, all highly sporulating on PB260. Among those, four did not sporulate and one sporulated partially on RO38. Both pseudo-testcross parental genetic maps and the consensus map were constructed. The search for QTLs was performed using the Kruskal-Wallis marker-by-marker test and the Interval-Mapping method for the three maps. Eight QTLs for resistance were identified on the RO38 map. Only one QTL was detected on the PB260 map. The analysis of the F1 consensus map confirmed results obtained with the parental maps. A common QTL was detected for resistance to the five strains for both RT and LD. Two QTLs were common for complete resistance to four strains, for RT and LD respectively. Resistance determinism for complete and partial resistance, and perspectives for breeding for durable resistance to SALB are discussed. Springer-Verlag Berlin Heidelberg, 2000 Key words Microcyclus ulei nationallicence South American leaf blight nationallicence Hevea nationallicence QTL mapping nationallicence Lespinasse D. CIRAD, Centre de Coopération Internationale en Recherche Agronomique pour le Développement, avenue Agropolis, BP5035, 34032 Montpellier cedex 1, France, FR aut Grivet L. CIRAD, Centre de Coopération Internationale en Recherche Agronomique pour le Développement, avenue Agropolis, BP5035, 34032 Montpellier cedex 1, France, FR aut Troispoux V. CIRAD, campus agronomique, BP701, 97387 Kourou cedex, Guyane Française, XX aut Rodier-Goud M. CIRAD, Centre de Coopération Internationale en Recherche Agronomique pour le Développement, avenue Agropolis, BP5035, 34032 Montpellier cedex 1, France, FR aut Pinard F. CIRAD, campus agronomique, BP701, 97387 Kourou cedex, Guyane Française, XX aut Seguin M. CIRAD, Centre de Coopération Internationale en Recherche Agronomique pour le Développement, avenue Agropolis, BP5035, 34032 Montpellier cedex 1, France, FR aut https://doi.org/10.1007/s001220051379 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s001220051379 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lespinasse D. CIRAD, Centre de Coopération Internationale en Recherche Agronomique pour le Développement, avenue Agropolis, BP5035, 34032 Montpellier cedex 1, France, FR aut NATIONALLICENCE 700 1- Grivet L. CIRAD, Centre de Coopération Internationale en Recherche Agronomique pour le Développement, avenue Agropolis, BP5035, 34032 Montpellier cedex 1, France, FR aut NATIONALLICENCE 700 1- Troispoux V. CIRAD, campus agronomique, BP701, 97387 Kourou cedex, Guyane Française, XX aut NATIONALLICENCE 700 1- Rodier-Goud M. CIRAD, Centre de Coopération Internationale en Recherche Agronomique pour le Développement, avenue Agropolis, BP5035, 34032 Montpellier cedex 1, France, FR aut NATIONALLICENCE 700 1- Pinard F. CIRAD, campus agronomique, BP701, 97387 Kourou cedex, Guyane Française, XX aut NATIONALLICENCE 700 1- Seguin M. CIRAD, Centre de Coopération Internationale en Recherche Agronomique pour le Développement, avenue Agropolis, BP5035, 34032 Montpellier cedex 1, France, FR aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer