Poster Abstract Submission
Poster abstract submission deadline: Monday 29th April 2019.
You are encouraged to register before this date, to reserve a place at the meeting, then submit your poster abstract before the deadline.
You will receive an email by Monday 13th May 2019 informing you whether or not your application has been accepted and if (based upon your poster abstract) you have been selected to give a 20 minute oral presentation of your work (15 minutes presentation; 5 minutes for questions).
Note there will be prizes awarded for the best posters. Poster abstracts will be published in the programme and abstract book and will be made available on the website.
Poster abstract guidelines
- Abstracts should be no more than 200 words and should fill a space no larger than half an A4 page
- Single spacing, Arial font, 10 point
- First line: title in bold lower case
- Second line: the author(s)' name(s) in upper case. Underline the name of the author presenting the work
- Third line: full address of the institution(s) where the work was carried out, in italic lower case
- Leave a single line space after the address
- Main text: provide concise details of the background and objective(s) of the investigation, methods used, results and conclusions
The origin of Helianthus deserticola: survival and selection in a desert habitat
B. L. GROSS, N. C. KANE, C. LEXER, L. H. RIESEBERG
Department of Biology, Indiana University, Jordan Hall 142, 1001 East Third Street, Bloomington, IN 47405, USA
The diploid hybrid species Helianthus deserticola inhabits an extreme environment relative to its parental species H. annuus and H. petiolaris. Adaptation to the arid desert floor may have occurred via the acquisition of novel phenotypes resulting from transgressive segregation in early hybrids. We have explored this possibility through a field experiment designed to test the direction and intensity of phenotypic selection, using crosses between the parental species as proxies for the ancestral genotype of the ancient hybrid species. Helianthus deserticola, H. annuus, H. petiolaris, and early-generation hybrids between H. annuus and H. petiolaris were all grown in native H. deserticola habitat, and a selection analysis revealed that several traits were subject to strong selective pressures. Several of the traits under selection were also extreme or transgressive in H. deserticola, and the range of variation present in BC2 hybrids suggests that many aspects of the H. deserticola phenotype are easily recreated. Thus, transgressive segregation may have contributed to the adaptation of H. deserticola to the desert habitat.
- Posters should be no larger than A0 size, portrait (118 cm high x 84 cm wide)
- Poster abstracts should be formatted as .DOC, .DOCX or .RTF files and submitted using the online submission procedure.
- Please fill in the below details and proceed to upload your poster abstract.