Abstract
An integrated genetic map of pepper including 6 distinct progenies and consisting of 2262 markers covering 1832 cM was constructed using pooled data from six individual maps by the Keygene proprietary software package INTMAP. The map included: 1528 AFLP, 440 RFLP, 288 RAPD and several known gene sequences, isozymes and morphological markers. In total, 320 anchor markers (common markers in at least two individual maps) were used for map integration. Most anchor markers (265) were common to two maps, while 27, 26 and 5 markers were common to three, four and five maps, respectively. Map integration improved the average marker density in the genome to 1 marker per 0.8 cM compared to 1 marker per 2.1 cM in the most dense individual map. In addition, the number of gaps of at least 10 cM between adjacent markers was reduced in the integrated map. Although marker density and genome coverage were improved in the integrated map, several small linkage groups remained, indicating that further marker saturation will be needed in order to obtain a full coverage of the pepper genome. The integrated map can be used as a reference for future mapping studies in Capsicum and to improve the utilization of molecular markers for pepper breeding.
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Paran, I., van der Voort, J.R., Lefebvre, V. et al. An integrated genetic linkage map of pepper (Capsicum spp.). Molecular Breeding 13, 251–261 (2004). https://doi.org/10.1023/B:MOLB.0000022526.30914.31
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DOI: https://doi.org/10.1023/B:MOLB.0000022526.30914.31