Partial map of Coffea arabica L. and recovery of the recurrent parent in backcross progenies

• Main Authors: Antonio Carlos Baião de Oliveira, Ney Sussumu Sakiyama, Eveline Teixeira Caixeta, Eunize Maciel Zambolim, Raphael José Nascif Rufino, Laércio Zambolim
• Format: Article
• Language: English
• Published: Brazilian Society of Plant Breeding 2007-01-01
• Series: Crop Breeding and Applied Biotechnology
• Subjects: Coffee; molecular markers; RAPD; marker assisted selection; coffee leaf rust.
• Online Access: http://www.sbmp.org.br/cbab/siscbab/uploads/bd6b8831-07e7-37e3.pdf
• ISSN: 1518-7853; 1984-7033

A partial map of Coffea arabica L. was constructed based on a backcross population and RAPD markers.From a total of 178 markers evaluated, only 134 that segregated 1:1 (P>0.05) were used to develop the map. Seventeenmarkers were not linked, while 117 formed 11 linkage groups, covering a genome distance of 803.2 cM. The maximumdistance between adjacent markers was 26.9 cM, and only seven intervals exceeded 20 cM. The markers were further used forassisted selection of the plants closest to the recurrent parent, to accelerate the introgression of rust resistance genes in thecoffee breeding program. Three BC1 plants resistant to coffee leaf rust and with high genetic similarity to Catuaí wereselected and integrated in the following backcross cycles.