Post on 16-Dec-2015
transcript
1. Review of reproductive biology
2. Pollination Ecology
On the Function of Flowers
-precise placement-outcrossing-pollination syndromes
-life cycle -variation in flowers
1. Review of reproductive biology
2. Pollination Ecology
On the Function of Flowers
-precise placement-outcrossing-pollination syndromes
-life cycle -variation in flowers
Three paths for pollen flow: selfing: 1. Within flower 2. Between flowers 3. outcrossing (between plants)
Female zone
Male zone
Bees fly up
Then start over at the bottom
Three components to outcrossing in foxglove1. Young flowers are male, old are female2. Young flowers are nearer the top3. Bees fly up.
1. Review of reproductive biology
2. Pollination Ecology
On the Function of Flowers
-precise placement-outcrossing-pollination syndromes
-life cycle -variation in flowers
-pollination syndromes
Sphinx Moth --
-long tube-white color-abundant nectar- exquisite odor (periodic)- landing
-pollination syndromes
Beetle -- two variants, nuptial chamber and painted bowlSee Bernhardt 2000 to fix this slide and the next two.
The beetle pollination syndrome - nuptial-chamber variant
• Many stamens often with appendages• Chamber to accommodate several animals• Night-flowering• Without markings• Scent attractant for beetles
-pollination syndromes
Carrion insect --
-contrasting light and dark pattern-brown-purple color-no nectar- foul odor