Slide 1: P earl millet Floral Biology © A.K. Chhabra Floral Biology Pearl millet
Slide 2: P earl millet Floral Biology © A.K. Chhabra The Crop View Spike Flag leaf
Slide 3: The
Plant Plant has many tillers, each having one spike at the terminal end. Inflorescence is a one half to two feet long cylindrical terminal spike consisting of a central rachis on which infinite number of fascicles are packed Spike P earl millet Floral Biology © A.K. Chhabra
Slide 4: P earl millet Floral Biology © A.K. Chhabra Bee pollination in pearl millet MOVIE Honey bee visiting pearl millet spike
Slide 5: Boot-leaf
Stage Emerging spike from flag leaf P earl millet Floral Biology © A.K. Chhabra
Slide 6: Ear emergence in pearl millet Flag leaf Ear still inside flag leaf sheath Panicle
Slide 7: Various Stages of Spike Development & Anthesis in Pearl millet Panicle
emergence Protogyny First flush
of anthesis Second flush
of anthesis Third flush
of anthesis Stigma Emergence Anther Dehiscence from staminate florets Anther Dehiscence from perfect florets Boot leaf stage 1 2 3 4 5 6 7 Anthesis completed & grain formation started
Slide 8: Various Stages of Anthesis in Pearl millet Panicle
emergence Protogyny First flush
of anthesis Second flush
of anthesis Third flush
of anthesis Stigma Emergence Anther Dehiscence from staminate florets Anther Dehiscence from perfect florets Anthesis
completed
Slide 9: Anthesis
First flush of
anthers from
bisexual florets
OR
Second flush
of anthesis
Slide 10: Panicle (part) of Pearl Millet
CLOSE-UP VIEW OF
Immature panicle Spikelets
Slide 11: Panicle (part) of Pearl Millet
FURTHER CLOSE-UP VIEW OF
Immature panicle Spikelets
Slide 12: Bi-fid feathery stigma
(white) Protogyny in pearl millet
Slide 13: CLOSE-UP
Protogyny in pearl millet Bi-fid feathery stigma
(white)
Slide 14: CLOSE-UP
Protogyny in
pearl millet Bi-fid feathery stigma
(white) Bisexual
floret
Slide 15: CLOSE-UP
Protogyny in
pearl millet Bi-fid feathery stigma
(white) Bisexual
floret
Slide 16: Part of Panicle of
Pearl Millet
CLOSE-UP
Protogyny in
pearl millet Bi-fid feathery stigma
(white) Bisexual
floret
Slide 17: CLOSE-UP
Protogyny in
pearl millet Bi-fid feathery stigma
(white) Bisexual
floret
Slide 18: Rachis of Pearl millet spike Fascicle
attached
to rachis
Slide 19: Rachis of Pearl millet spike Fascicles
attached
to rachis
Slide 20: Rachis of Pearl millet spike Peduncle outside the flag leaf Peduncle inside the flag leaf Rachis and Peduncle of Pearl millet
Slide 21: T.S. of Pearl Millet Spike showing Arrangement of Fascicles Fascicle Rachis At Flowering At Maturity T.S. SPIKE
Slide 22: Cluster of fascicles
of pearl millet stigma spikelet Whorl of
bristles
Slide 23: Fascicle Peduncle Whorl of
bristles Pair of spikelets
Slide 24: Peduncle
My be
Pubescent (hairy)
Slide 25: Fascicle Fascicle has
three pairs
of spikelets,
each having
two florets,
lower being
staminate and
upper being
bisexual. Lower floret
(staminate) Upper floret
(bisexual) Whorl of
bristles
Slide 26: Pair of florets in a spikelet Spikelets contain two flowers partially enclosed by a short outer glume and another inner glume. Lower flower is staminate and upper one is
hermaphrodite. Three stamens
(lower staminate) Glume Glume Stigma
Slide 27: Spikelets
Florets
and
Stamens
of
Pearl millet stigma Lower
staminate
floret Upper
bisexual
floret Single Spikelet (closed) Single Spikelet (opened) Bisexual floret Dried dehisced anther stigma Three
stamens Glume
Slide 28: P earl millet Floral Biology © A.K. Chhabra Stigma Style Ovary Gynoecium
Slide 29: P earl millet Floral Biology © A.K. Chhabra Each Fascicle has One Bristle Only BRISTLE
Slide 30: P earl millet Floral Biology © A.K. Chhabra BRISTLE Each Fascicle has One Bristle Only
Slide 31: P earl millet Floral Biology © A.K. Chhabra SPIKELETS Each fascicle has a pair of spike lets. Each spike let has two florets, the upper one being perfect and the lower one being staminate. In bristled varieties, each fascicle has one bristle only. Bristle Stigma from perfect floret G1 G2 L1 L2 Staminate Floret Perfect Floret Pair of Spike let
Slide 32: P earl millet Floral Biology © A.K. Chhabra Variation for glume color Purple spot Green Grain
Slide 33: P earl millet Floral Biology © A.K. Chhabra Variation for glume color Purple spot on green glume Green glume
Slide 34: P earl millet Floral Biology © A.K. Chhabra Variation for glume color Purple spot on green glume Green glume
Slide 35: P earl millet Floral Biology © A.K. Chhabra Pair of spike lets removed from fascicle showing protruding stigmas from the perfect floret and second floret without stigma (staminate) Spike let Perfect floret
Slide 36: Color Variation for Anthers in Pearl millet
MAGNIFIED PICTURES ……. Yellow anthers Purple anthers Grey anthers P earl millet Floral Biology © A.K. Chhabra
Slide 37: Grey anthers P earl millet Floral Biology © A.K. Chhabra
Slide 38: Purple anthers P earl millet Floral Biology © A.K. Chhabra
Slide 39: Yellow anthers P earl millet Floral Biology © A.K. Chhabra
Slide 40: P earl millet Floral Biology © A.K. Chhabra Anther Color Variation MOVIE Click here to see clouds of pearlmillet pollen
Slide 41: Gynoecium of Pearl millet Stigma Style Ovary Stigma Style Ovary Style Stigma
Slide 42: Tip variation among spikes P earl millet Floral Biology © A.K. Chhabra
Slide 43: Tip variation among spikes
Slide 44: Bristled vs. non-bristled Pearl millet Bristles Non-bristled
Slide 45: P earl millet Floral Biology © A.K. Chhabra Variation for Bristle Color Purple Bristles Light Brown Bristles
Slide 46: Mature
spikes
filled
with
grains
Slide 47: Mature Grains on Spike P earl millet Floral Biology © A.K. Chhabra
Slide 48: Floral Biology of Pearl millet Spike Shapes in Pearl millet Source: ICRISAT P earl millet Floral Biology © A.K. Chhabra Panicle shape and size variation in pearl millet germplasm at ICRISAT
Slide 49: Spike Length Variation & Shapes in Pearl millet CMS lines
Slide 50: Twin-Spikes in pearl millet
Slide 51: CROSSING
BLOCK
Slide 52: Selfing and Crossing Field/Nursery
Slide 53: Pearl millet field at anthesis
Slide 54: Floral Biology of Pearl millet Pearl millet field at maturity
Slide 55: Floral Biology of Pearl millet Pearl millet field at maturity
Slide 56: Mature Crop
of
Pearl Millet
Slide 57: Flag leaf Hairy ligules Marker trait for varietal identification
Slide 58: Marker trait for varietal identification Hairy ligules