Vegetative Propagation Natural Methods. Epiphyllous Buds Bryophyllum daigremontianum .
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Transcript of Vegetative Propagation Natural Methods. Epiphyllous Buds Bryophyllum daigremontianum .
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Vegetative Propagation
Natural Methods
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Epiphyllous Buds
Bryophyllum daigremontianum
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http://www.bryophyllum.com/b/files/img.php?width=500&file=60.jpg
http://www.bryophyllum.com/b/files/img.php?width=500&file=50.jpg
Bryophyllum delagoensis
Cytokinins accumulate in notches stimulate shoot development
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Scaly Bulb
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http://www.s-3gim.mb.edus.si/Medicina/Cokan/pomladanska3.jpg
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http://www.hort.cornell.edu/4hplants/Vegetables/Images/Onion-23.jpg
Onion, Tulip, Daffodil
Scales are leaf bases.
Basal plate is stem.
Roots are adventitious.
Lateral buds in axis make bulbils.
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http://trc.ucdavis.edu/egsutter/plb171/VisualMaterial/largePhotoSStruc/BulbsPic/bulb-tun-onion64lable.jpg
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Scaly Bulbs
In garlic bulbs, the lateral buds become bulbils called “cloves” of garlic.
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http://www.srgc.org.uk/bulblog/161003/Crocus%20sativus%20corm%20and%20stigma.jpg
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Corms: Just the basal plate Crocus and Gladiolus
Lateral buds develop into cormels
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Tuber at end of rhizome (underground stem)
Tuber swells as a storage organ.The apical bud and lateral buds are “eyes.”A piece of potato with an eye can be treated almost like a seed.
Potato, Helianthus tuberosus
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http://www.plantoftheweek.org/image/chlorophytum.jpg
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http://www.botgard.ucla.edu/html/botanytextbooks/generalbotany/images/typesofshoots/stolon/Fragariastolons2.jpg
Stolons: Spider Plant and Strawberry
Leafless overground branch develops crown which arches to soil, roots, and becomes independent.
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http://www.uwgb.edu/biodiversity/herbarium/shrubs/rubocc_stem02.jpg
Tip layer Black Raspberry and Forsythia
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Tip Layer
Leafy shoot tip arches to soil, takes root, and becomes independent plant.
Bramble describes this behavior.
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http://www.urbanext.uiuc.edu/raspberries/images/diagram_parts.gif
Root sprouts Red Raspberry and Rose, many others!
Roots growing from original plant near soil surface, accumulate cytokinins, make sprout.
Results in “thicket”
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Vegetative Propagation
Artificial Methods
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Blade
Petiole
1. IAA produced
4. Roots form 5. CK
produced
6. CK transport
7. Shoot formed
2. IAA transported
Leaf-petiole Cutting
3. Callus develops
African violetJade plantKalanchoePepperomia
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1. IAA produced
2. IAA transported
3. Callus develops
4. Roots form
5. Sell sooner!
Stem CuttingPlectranthusand many more!
IAA IAA
IAAIAA
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6. Wait and separate!
1. Bend stem to soilTip LayerYes, it is both a natural and an artificial method!
IAA
5. Anchor to ground
4. Bury in moist soil
3. Apply rooting powder
2. Wound bark on lower side
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What if the plant you want to clone is a special maple tree that turns wonderful combinations of green, yellow, orange, and red in the fall. The lowest branch is many feet above the soil making a tip-layer impossible. Leaf and stem cuttings fail but you think a tip-layer might work if only the tree were not so tall. How do you solve this dilemma?
If the cutting is Mohammad, and you cannot bring Mohammad to the mountain, you should…
…bring the mountain to Mohammad! Air Layer!
We will work this example on the whiteboard together in class!