Floral Biology of sorghum

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By: sanjayrathod (39 month(s) ago)

Sir Myself Dr.Rathod ST working as a Asstt. Professor at College of Agriculture, Ambajogai, I got very good information regarding floral biology, but I would like to show this presentation during practical to the students. Therefore I kindly request you to send same please.

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This is a very nice presentation on sorghum and i am interested to have a copy of it. Please allow me to download this. Thanks.

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Please let me know your academic details like your name, admission no.., affiliation, country etc. which is mandatory to permit youto allow this presentation

 

Presentation Transcript

Slide 1: 

Floral Sorghum Biology © A.K. Chhabra Sorghum vulgare

Slide 2: 

Sorghum Plants with lose inflorescence © A.K. Chhabra

Slide 3: 

Sorghum Plants with lose panicle © A.K. Chhabra Height generally varies from 40-600cm. It's stem has 7-18 nodes & internodes.

Slide 4: 

Sorghum Plants with compact inflorescence © A.K. Chhabra It releases 25-100 million pollen grain.

Slide 5: 

Sorghum Plants with compact panicle © A.K. Chhabra Height generally varies from 40-600cm. It's stem has 7-18 nodes & internodes.

Slide 6: 

© A.K. Chhabra Sorghum Panicle enclosed in the flag leaf Flag leaf

Slide 7: 

Sorghum Lose panicle inside flag leaf © A.K. Chhabra Flag leaf Main rachis Primary branch The inflorescence is a panicle with a central rachis from which come primary branches. They give rise to secondary & Some times tertiary branches which carry the racemes of spike-lets

Slide 8: 

Sorghum Lose panicle © A.K. Chhabra Main rachis Primary branch The inflorescence is a panicle with a central rachis from which come primary branches. They give rise to secondary & Some times tertiary branches which carry the racemes of spike-lets Secondary branches

Slide 9: 

Sorghum Compact panicle © A.K. Chhabra The inflorescence is a panicle with a central rachis from which come primary branches. They give rise to secondary & Some times tertiary branches which carry the racemes of spike-lets

Slide 10: 

Part of Panicle Spike-lets Close-up View of Panicle

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© A.K. Chhabra Sorghum Part of the panicle Awn Pair of spikelets For further close-up, see the next slide………………… Primary branch Secondary branch

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© A.K. Chhabra Sorghum Part of the panicle Awn Pair of spikelets For further close-up, see the next slide………………… Pedicillate spikelet Sessile spikelet Secondary branch

Slide 13: 

Different Views of Spikelets

Slide 14: 

© A.K. Chhabra Sorghum Part of the panicle Awn Pair of spikelets For another view see the next slide………………… Pedicillate Spikelet (sterile) Sessile Spikelet (perfect)

Slide 15: 

© A.K. Chhabra Sorghum Part of the panicle Awn Pair of spikelets For further close-up, see the next slide………………… Pedicillate Spikelet (sterile) Sessile Spikelet (perfect)

Slide 16: 

© A.K. Chhabra Sorghum Awn Pair of spikelets Pedicillate Spikelet (sterile) Sessile Spikelet (perfect) For another view see the next slide…………………

Slide 17: 

© A.K. Chhabra Sorghum Awn Pair of spikelets Pedicillate Spikelet (sterile) Sessile Spikelet (perfect) For another view see the next slide…………………

Slide 18: 

© A.K. Chhabra Sorghum Awn Terminal spikelets with one sessile and a pair of pedicellate spikelets Pedicillate Spikelet (sterile) Sessile Spikelet (perfect) For another view see the next slide………………… Pedicillate Spikelet (sterile)

Slide 19: 

© A.K. Chhabra Sorghum Awn Terminal spikelets with one sessile and a pair of pedicellate spikelets Pedicillate Spikelet (sterile) Sessile Spikelet (perfect) For another view see the next slide………………… Pedicillate Spikelet (sterile) Pedicillate Spikelet (sterile)

Slide 20: 

© A.K. Chhabra Sorghum Awn Terminal spikelets with one sessile and a pair of pedicellate spikelets Pedicillate Spikelet (sterile) Sessile Spikelet (perfect) Pedicillate Spikelet (sterile)

Slide 21: 

Different Views of Florets

Slide 22: 

© A.K. Chhabra Sorghum Open bisexual floret (anthers removed) Glume I Lemma hidden inside glume II bears awn Sessile spikelet Glume II Bifid feathery stigma Palea Two styles (bifurcated) For another view see the next slide………………… Perfect flower consist of two glumes one hairy lemma, a small palea, small awn, 3 stamens two lodicules & one pistil.

Slide 23: 

© A.K. Chhabra Sorghum Open bisexual floret (anthers intact) Glume I Lemma hidden inside glume II bears awn Sessile spikelet Glume II Bifid feathery stigma anther Awn Perfect flower consist of two glumes one hairy lemma, a small palea, small awn, 3 stamens two lodicules & one pistil. Ovary has two styles with feathery stigmas

Slide 24: 

Sorghum Compact panicle At anthesis © A.K. Chhabra Extruding anthers Direction of flowering For another Close view see the next slide…………………

Slide 25: 

Sorghum Anthesis © A.K. Chhabra Extruding anthers Extruding stigma For another view see the next slide…………………

Slide 26: 

For another view see the next slide………………… Sorghum Anthesis © A.K. Chhabra Extruding anthers Extruding stigma Glume Awn Lemma tip Part of Panicle

Slide 27: 

Sorghum Anthesis © A.K. Chhabra Extruding anthers Extruding stigma For another view see the next slide………………… Glume Awn Lemma tip Part of Panicle

Slide 28: 

For another view see the next slide………………… Sorghum Anthesis © A.K. Chhabra Extruding anthers Extruding stigma Awn Glume Awn Lemma tip Part of Panicle

Slide 29: 

Sorghum Anthesis © A.K. Chhabra Extruding anthers Extruding stigma For another view see the next slide………………… Glume Awn Lemma tip Part of Panicle

Slide 30: 

Sorghum Spike-lets arrangement on inflorescence Secondary branch Tertiary branch Fertile sessile spikelet Sterile Pedicellate spikelet Awns Part of Panicle

Slide 31: 

Sorghum Anthesis © A.K. Chhabra Extruding anthers Extruding stigma Awn For another view see the next slide………………… Part of Panicle

Slide 32: 

Sorghum Anthesis © A.K. Chhabra Extruding anthers Extruding stigma Awn For another view see the next slide………………… Part of Panicle

Slide 33: 

Sorghum Glume © A.K. Chhabra

Slide 34: 

Sorghum Sterile spikelet / floret (closed) © A.K. Chhabra

Slide 35: 

Sorghum Lemma with awn © A.K. Chhabra Lemma Awn For another view see the next slide…………………

Slide 36: 

Sorghum Lemma with awn © A.K. Chhabra Lemma Awn

Slide 37: 

Sorghum Palea © A.K. Chhabra Palea For another view see the next slide…………………

Slide 38: 

Sorghum Anther © A.K. Chhabra

Slide 39: 

For another view see the next slide………………… Sorghum Gynoecium © A.K. Chhabra Ovary Style Style Hairy stigma

Slide 40: 

For another view see the next slide………………… For another view see the next slide………………… Sorghum Gynoecium © A.K. Chhabra Ovary Style Style Hairy stigma

Slide 41: 

For another view see the next slide………………… For another view see the next slide………………… Sorghum Gynoecium CLOSEUP © A.K. Chhabra Ovary Style Style Hairy stigma

Slide 42: 

For another view see the next slide………………… Sorghum Gynoecium © A.K. Chhabra Ovary Style Style Hairy stigma CLOSEUP 2

Slide 43: 

Sorghum Ovary and anthers © A.K. Chhabra Ovary Filament anther Hairy stigma removed

Slide 44: 

Controlled Pollination In Sorghum