Abstract
The retrotransposon-based sequence-specific amplification polymorphism (SSAP) marker system was used to assess the genetic diversities of collections of tomato and pepper industrial lines. The utility of SSAP markers was compared to that of amplified fragment length polymorphism (AFLP) and simple sequence repeat (SSR) markers. On the basis of our results, SSAP is most informative of the three systems for studying genetic diversity in tomato and pepper, with a significant correlation of genetic relationships between different SSAP datasets and between SSAP, AFLP and SSR markers. SSAP showed about four- to ninefold more diversity than AFLP and had the highest number of polymorphic bands per assay ratio and the highest marker index. For tomato, SSAP is more suitable for inferring overall genetic variation and relationships, while SSR has the ability to detect specific genetic relationships. All three marker results for pepper showed general agreement with pepper types. Additionally, retrotransposon sequences isolated from one species can be used in related Solanaceae genera. These results suggest that different marker systems are suited for studying genetic diversity in different contexts depending on the group studied, where discordance between different marker systems can be very informative for understanding genetic relationships within the study group.
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 callDisclaimer: 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.
