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Title:

POLLINATION

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Flower = A determinate shoot with sterile and fertile modified leaves. ... Salvia columbarie: Chia. Collinsia heterophyla. Gilia tricolor. Delphinium. Sidalcea ... – PowerPoint PPT presentation

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Title: POLLINATION


1
POLLINATION
  • Definition Release, transfer and deposit of the
    microgametophyte on the receptive portion of the
    carpel (usually the stigma)
  • Function transfer mobile packets of sperm
    (pollen) for sexual reproduction
  • Pollination precedes fertilization

2
Flower Structure
  • Flower A determinate shoot with sterile and
    fertile modified leaves.
  • Fertile modified leaves are sporophylls
  • Two types of sporophylls
  • Stamens (Androecium)
  • Carpel (Gynoecium)

3
Flower Modifications
  • Complete vs. Incomplete
  • Perfect
  • Imperfect
  • Monoecious
  • Dioecious
  • Homogamy vs. Dichogamy Timing
  • Protogyny Carpel matures first
  • Protandry Stamens mature first

4
Why so many modifications?
  • Breeding System
  • Autogamy
  • Allogamy
  • Geitonogamy
  • Xenogamy
  • Advantages for outbreeding

5
Pollination Vectors
  • ABIOTIC
  • Wind Anemophily
  • Water Hydrophily
  • BIOTIC
  • Primary Attractants A reward
  • Secondary Attractants Stand Out
  • Deception

6
Dendromecon Bush Poppy
7
Tulip
8
Salvia columbarie Chia
9
Collinsia heterophyla
10
Gilia tricolor
11
Delphinium
12
Sidalcea
13
Helianthus Sunflower
14
Cereus
15
Thalictrum polycarpum Male
16
Thalictrum polycarpum Female
17
Rhododendron Butterfly
18
Cotton Pollen Exine
19
Magnolia
20
Echinocereus mojavensis
21
Catasetum fimbriatum
22
Catasetum Male flower
23
Catasetum Female flower
24
Calochilus robertsonii
25
Trichoceros parviflora
26
Ophrys cretica
27
(No Transcript)
28
Sarracenia Purple Pitcher Plant
29
Cypripedium acaule Pink Lady Slipper
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