Abstract
We constructed a genetic linkage map for the carnation (Dianthus caryophyllus L.) on the basis of random amplified polymorphic DNA (RAPD) and simple sequence repeat (SSR) by using a resistance-segregating population of 134 progeny lines that were derived from a cross between ‘Carnation Nou No. 1’ (a carnation breeding line resistant to bacterial wilt) and ‘Pretty Favvare’ (a susceptible cultivar). The linkage map consisted of 137 RAPD and 9 SSR markers. Linkage analysis revealed that 124 loci could be mapped to 16 linkage groups that extended for 605.0 centiMorgans (cM). The average interval between two loci was 4.9 cM. Quantitative trait loci (QTL) analysis was applied to evaluations of resistance to bacterial wilt that were replicated 8 times. The QTL that we reported previously with a large effect on resistance was detected on group 6 which accounted for 60.5% of the total phenotypic variance with a LOD score 23.46. Two other QTLs with small effects were detected on groups 2 and 5 with LOD scores of 2.32 and 2.87, respectively. These results suggest that resistance to bacterial wilt in carnation is related to one major and at least two minor genes. This study is the first report on the construction of a linkage map of the carnation.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of the Japanese Society for Horticultural Science
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
