%0 Journal Article
%9 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES
%A Herrera, P. J. C.
%A Alvarado, A. V.
%A Cortina, G. H. A.
%A Combes, Marie-Christine
%A Romero, G. G.
%A Lashermes, Philippe
%T Genetic analysis of partial resistance to coffee leaf rust (Hemileia vastatrix Berk & Br.) introgressed into the cultivated Coffea arabica L. from the diploid C. canephora species
%D 2009
%L fdi:010046005
%G ENG
%J Euphytica
%@ 0014-2336
%K Coffea arabica ; Hemileia vastatrix ; Orange leaf rust ; Partial resistance ; Molecular markers
%M ISI:000264833400006
%N 1
%P 57-67
%R 10.1007/s10681-008-9860-9
%U https://www.documentation.ird.fr/hor/fdi:010046005
%> https://www.documentation.ird.fr/intranet/publi/2009/04/010046005.pdf
%V 167
%W Horizon (IRD)
%X The objective of this study was to identify polymorphic molecular markers associated with partial resistance to coffee leaf rust, Hemileia vastarix. A segregating F (2) population derived from a cross between the susceptible Coffea arabica cv. Caturra and a C. canephora-introgressed Arabica line exhibiting high partial resistance was analyzed. Rust resistance measured as rust incidence (RI) and defoliation (DEF) was evaluated in field conditions in three consecutive years (2003-2005). During the 2003 season, which was characterized by favorable conditions for a rust epidemic, the F (2) plants exhibited different levels of resistance ranging from very susceptible (50.1% for DEF and 49.5% for RI) to highly partial resistance (9.1% for DEF and 3.7% for RI). Molecular analysis enabled identification of seven polymorphic markers (5 AFLP and 2 SSR) exhibiting significant association with partial resistance. Coexistence of resistance homozygous alleles (RR) at codominant SSR loci was correlated with high resistance. This study is the first attempt to develop PCR-based sequence specific markers linked to partial rust resistance in coffee.
%$ 076