Nontunicate-Bulbs

lily
lily
lily

Bulbs

Modified underground stem consisting of a basal plate (shortened stem axis), growing point or flower primor-dium, enclosed by thick, fleshy scales. Example: onion, tulip, lily

Tunicate-Bulbs


narcissus
tulip
tulip

Methods of propagation

1. Offsets - new, daughter bulbs formed at base (axils) of leaf scales. When very small are known as bulblets; are called offsets when grown to full size.
2. Underground stem bulblets - only in lilies. Small bulbs formed on stems underground.
3. Aerial stem bublets, bulbils. Formed in axils of leaves of some lily species.
4. Stem cuttings - some lilies. Cutting made shortly after flowering.
5. Scaling- Formation of adventitious bulblets at the base of individual bulb scales that have been sepa-rated from the mother bulb.
6. Basal cuttage- specifically for hyacinth. Scoop out cen-ter of mature bulb; adventitious bulblets form at base of exposed bulb scales.
7. Leaf cuttings- Bulblets form at base of leaf which has been placed in rooting medium. Limited application (hyacinth, grape hyacinth)
8. Bulb cuttings - Mature bulb is cut up into a cuting consisting of a piece of basal plate and segments of 3 or 4 scales.
9. Tissue culture - in vitro methods. Used for initial stock for virus eradication and rapid, clonal multiplication of desired material.

tulip

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