Interspecific genetic linkage map, segregation distortion and genetic conversion in coffee (Coffea sp.)

An interspecific partial genetic linkage map of Coffea sp. based on 62 backcross hybrids is presented. F^sub 1^ hybrids were generated by a cross between the wild C. pseudozanguebariae and the anciently cultivated C. liberica var. dewevrei (DEW); progeny were then derived from a backcross between F^...

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Bibliographic Details
Published in:Theoretical and applied genetics 2000-09, Vol.101 (4), p.669-676
Main Authors: KY, C.-L, BARRE, P, LORIEUX, M, TROUSLOT, P, AKAFFOU, S, LOUARN, J, CHARRIER, A, HAMON, S, NOIROT, M
Format: Article
Language:English
Subjects:
Alcohol
Biological and medical sciences
Classical genetics, quantitative genetics, hybrids
Coffea liberica
Coffea pseudozanguebariae
Coffee
Fundamental and applied biological sciences. Psychology
Genetics of eukaryotes. Biological and molecular evolution
Leaves
Plant reproduction
Polymorphism
Pteridophyta, spermatophyta
Vegetals
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Summary:An interspecific partial genetic linkage map of Coffea sp. based on 62 backcross hybrids is presented. F^sub 1^ hybrids were generated by a cross between the wild C. pseudozanguebariae and the anciently cultivated C. liberica var. dewevrei (DEW); progeny were then derived from a backcross between F^sub 1^ hybrid and DEW. The map construction consisted of a two-step strategy using 5.5 and 3.1 LOD scores revealed by simulation file. The map consisted of 181 loci: 167 amplified fragment length polymorphism (AFLP) and 13 random fragment length polymorphism (RFLP) loci. The markers were assembled into 14 linkage groups, each with 4-31 markers covering 1,144 cM. Segregation distortion was observed for 30% of all loci, in particular 3:1 and 1:3 ratios equally favouring each of the two parents. The existence of such ratios suggests genetic conversion events. This map also represents an initial step towards the detection of quantitative trait loci.[PUBLICATION ABSTRACT]
ISSN:0040-5752
1432-2242
DOI:10.1007/s001220051529