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“I think she’s compensating for something!”

“I think she’s compensating for something!”. Joceline V. Vu The University of Virginia Dr. Michael J. Wise Summer Research 2009 Blandy Experimental Farm. A case of anther envy in the seemingly perfect world of Mimulus guttatus. Blandy Experimental Farm Boyce, VA. hermaphroditism. gynodioecy.

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“I think she’s compensating for something!”

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  1. “I think she’s compensating for something!” Joceline V. VuThe University of VirginiaDr. Michael J. Wise Summer Research 2009Blandy Experimental Farm A case of anther envy in the seemingly perfect world of Mimulus guttatus.

  2. Blandy Experimental FarmBoyce, VA

  3. hermaphroditism gynodioecy dioecy monoecy Breeding Systems in Plants

  4. Problem of Interest ? male-sterility: reproductive cost How can females compensate in a hermaphroditic population?

  5. Hermaphrodite (perfect) Male-Sterile (Female)

  6. Questions Compensating for reproductive costs • Fecundity? • Pollinator attraction? Plant Performance Experiment Plant Performance Experiment Pollinator Preference Experiment

  7. Methods 1392 seedlings 611 from female lines 606 from perfect lines 316 295“sterile-sibling perfect” 13 593

  8. Plant Performance Experiment Fruit Count Ovule Count Fruit Count Corolla Width and Length Fruit Count Ovule Count Ovule Count Corolla Width and Length Corolla Width and Length

  9. Female flowers are larger than perfect flowers Corolla Width Corolla Length P = 0.01 p = 0.01 p < 0.0001

  10. Females flower earlier than hermaphrodites p = 0.03

  11. Females produce more fruits and more ovules/fruit Fruit Number Ovule Number p < 0.0001 p < 0.0001

  12. Summary: Plant Performance Females have bigger flowers, more fruits, and more ovules/fruit

  13. Pollinator Preference

  14. Pollinator Preference Floral Display, Plant Visits, Flowers/Plant Visit

  15. Female plants have a larger floral display a b b a a b b b b Trial 1 Trial 2 Trial 3 but…

  16. Flower visits per plant visit is higher for perfect plants than females b b ab b ab a a a a Trial 1 Trial 2 Trial 3

  17. Floral display affects flower visits per plant visit for perfect flowers Hermaphrodites:r = 0.30; p = 0.002 Females:r = 0.10; p = 0.35

  18. Summary: Pollinator Preference Bees visit all plants equallyOnce on a hermaphrodite, they stay longer Fertilization? Inbreeding?

  19. Conclusions Can female plants compensate enough to compete in a perfect world?fecunditypollination

  20. Acknowledgements

  21. Questions?

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