Abstract
The genetic basis of flowering time in F, progeny derived from a cross of Mimulus guttatus was studied using seven unlinked isozyme markers. Each marker represented a specific chromosomal segment; its cosegregation with flowering time was used to characterize genes affecting flowering time. Three of the seven chromosomal segments were found to show significant, partially dominant effects on the expression of flowering time. These effects were relatively small, with segments marked by Me, 6Pgd2, and Tpi individually explaining only 2.3, 2.5, and 9.2 percent of total phenotypic variance, respectively. No significant pairwise epistasis was observed between any marked chromosomal segments. The results of this study indicate that the quantitative variation of flowering time in M. gutsatus has a partial genetic basis, likely to consist of multiple genes of relatively small, partially dominant effects, with the potential to respond to natural selection.
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.
