Submitted to: HortScience
Publication Type: Abstract Only
Publication Acceptance Date: 2/5/2002
Publication Date: 5/10/2002
Citation: LEVI, A., THOMAS, C.E., WEHNER, T., ZHANG, Z., DAVIS, A.R. TOWARDS AN INTEGRATED LINKAGE MAP OF WATERMELON. HORTSCIENCE. 2002. p.451. Abstract No. S17-P-101.
Technical Abstract: An integrated linkage map is being assembled by merging three maps constructed for watermelon. Among these is a recent map derived from a testcross population [Plant Accession Griffin 14113 (C. lanatus var. citroides) x New Hampshire Midget (NHM; Citrullus lanatus var. lanatus)] x U.S. Plant Introduction (PI) 386015 (C. colocynthis). The map contains over r141 randomly amplified polymorphic DNA (RAPD) markers, 27 inter simple sequence repeat (ISSR) markers, and 12 sequence characterized amplified region (SCAR) markers. Among them a SCAR marker linked (1.6 cM) to race 1 Fusarium wilt resistance in watermelon. The map consists of 25 linkage groups covering a total distance of 1166.2 cM, and with an average distance of 8.1 cM between two markers. Among the linkage groups is a large group of 22 markers covering a mapping distance of 225.6 cM. Also, six large groups each with 10-20 markers that cover a mapping distance of 68.8-110.8 cM, five linkage groups each with 3-7 markers that cover a mapping distance of 36.5-57.2 cM, and thirteen small linkage groups each contains 2-11 markers that cover a mapping distance of 3.5-29.9 cM. The integrated map is used for further development of markers linked to disease resistance and fruit quality in watermelon.