Abstract Detail



Reproductive Processes

Schurr, Paige [1], Garrett, Patrick [2], Johnson, Sophia [1], Majetic, Cassie [3].

A volatile in time: The scent emissions of Canella winterana through its sexual stage transition.

Floral scent can have a significant impact on pollinator visitation and therefore can ultimately affect sexual reproduction. Floral scent is also known to be variable between and within species. Previous research has suggested that floral sex morphs (for example, male vs. female or hermaphrodite vs. male-sterile) within species can have distinct volatile profiles. However, research on whether these patterns hold true in dichogamous flowers is limited. Canella winterana is a plant that exhibits synchronous protogyny. The transitional neuter phase of this plant falls between the functionally female and functionally male phases, and is a time where neither the stigma nor pollen ridges are fully exposed. Previous research on this species has considered differences between male and female scent emissions but only as two distinct time points, female and male, and not continuously through sexual stage transitions. Using dynamic headspace extraction and gas chromatography-mass spectroscopy, floral scent of Canella winterana through its full sexual stage transition, including its neuter phase between fully-functional sex morphs, was assessed. We found that fully-functional male and female stages of C. winterana differ in some scent components and that odor from the neuter phase of the plant contains floral scent components of both male and female sex morphs in variable amounts. This gradual change in scent during sexual transitions could have implications for pollinator visitation and subsequent reproductive success.


1 - Saint Mary's College, Biology Department, Notre Dame, IN, 46556, USA
2 - Miami University, Biology, 700 East High Street, Oxford, OH, 45056, United States
3 - Saint Mary's College, Dept Of Biology, SR 933 North, Notre Dame, IN, 46556, United States

Keywords:
floral scent
dichogamy
Nueter Phase.

Presentation Type: Poster
Number: PRP007
Abstract ID:259
Candidate for Awards:None


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