Lecture 10 - Layering and Intro to Tissue Culture

Lecture 10 - Layering and Intro to Tissue Culture -...

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Specialized Structures &  Adaptations -Layering Hartmann & Kester Pg 539-551
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Layering Rooting occurs on an intact stem of a stock plant  Occurs naturally for some plants  Pre- _________ era : “Original” asexual propagation  practice   Now replaced by cuttings and micropropagation  Still used for  some difficult to root crops and by hobby  gardeners  Mango               Muscadine grape        Apple cultivars  American Filbert
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Layering
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Layering Disadvantages: 1.More ________ intensive 2.Fewer plants per stock       plant 3.  ___________ dependent 4.  Takes  ____________ 5.  Not possible with all       plants
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Layering  – reasons for success Maintains physical attachment to the mother plant
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Increase accumulation of COH’s and hormones in  the rooting area Layering  – reasons for success Girdling: Banding:   Stem shaded Dark –    auxin sensitivity phloem severed  COH/_______ accumulate Wounding & _________also     encourage root formation
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Utilize seasonal effects on rooting Initiate in the _____________ Use previous season’s d_________ wood New plants harvested in the fall (or early spring  of next year) Layering  – reasons for success
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Outdoor ‘beds’ used for 10-20 years Site conditions – good soil, drainage &  climate Use flexible, dormant one year old stems Exclude light but maintain ___________ and  _____________ Layering  – management
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This note was uploaded on 04/03/2011 for the course HORT 201 taught by Professor Staff during the Spring '08 term at Purdue University-West Lafayette.

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Lecture 10 - Layering and Intro to Tissue Culture -...

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