A genetic linkage map of Theobroma cacao L. based on isozymes, RFLPs, and RAPDs markers

A linkage map of cacao genome have been constructed using isoenzymes, RFLPOs, and RAPDs markers. A genomic library and cDNA library were constructed from germinated seeds of an Amelonado clone. The screening of probes was made on 5 genotypes, using 5 restriction enzymes. Among 587 tested probes, 52% of cDNA and 44% of genomic probes revealed polymorphic patterns. A population of 100 individuals derived from a cross between two heterozygous genotypes has been used. Segregation analyses were performed with JoinMap programm. The map comprised 193 loci: 5 isoenzymes, 101 cDNA/RFLPs, 4 loci from genes of known fonction, 55 genomic DNA/RFLPs and 28 RAPDs. Ten linkage groups, which putatively correspond to the 10 gametic chromosomes of cacao, have been identified. The map covers a total length of 759 cM with a 3,9 cM average distance between two markers. A small fraction (9%) of the markers deviated significantly from the expected mendelian ratios

Bibliographic Details

Main Authors:	Lanaud, Claire, Risterucci, Ange-Marie, N'Goran, Jeanne A.K., Clément, Didier, Flament, Marie-Henriette, Laurent, V.
Format:	conference_item biblioteca
Language:	eng
Published:	s.n.
Subjects:	F30 - Génétique et amélioration des plantes, Theobroma cacao, adn, carte génétique, RAPD, RFLP, isoenzyme, liaison génétique, http://aims.fao.org/aos/agrovoc/c_7713, http://aims.fao.org/aos/agrovoc/c_2347, http://aims.fao.org/aos/agrovoc/c_24002, http://aims.fao.org/aos/agrovoc/c_36341, http://aims.fao.org/aos/agrovoc/c_34255, http://aims.fao.org/aos/agrovoc/c_15987, http://aims.fao.org/aos/agrovoc/c_11179da9,
Online Access:	http://agritrop.cirad.fr/389712/
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