STEM MORPHOLOGY. Shoot tip Leaf scar Young leaf Stipule Lateral vein Leaf margin Pulvinus Petiole (leaf stalk) Leaf base Midrib Adventitious roots Abscission.

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Presentation transcript:

STEM MORPHOLOGY

Shoot tip Leaf scar Young leaf Stipule Lateral vein Leaf margin Pulvinus Petiole (leaf stalk) Leaf base Midrib Adventitious roots Abscission zone Internode Soil surface Transition zone Axillary bud Node Primary lateral root Tap root Secondary lateral root Leaf tip Axillary bud Leaf Root Stem Parts of Root, Stem and Leaf

new corm old corm BULB RHIZOME CORM TUBER axillary bud internode scale leaf node adventitious roots tuber axillary bud adventitious roots stem axillary bud terminal bud scale leaf axillary bud STEM MODIFICATIONS

Ginger - rhizome Potato- tuber Gladiolus - cormOnion - bulb

STOLON SUCKER RUNNER stolon runner suckernew rhizomeold rhizome sucker

Banana - suckers Stolons Runners

CLADODE cladode Asparagus

Stem modificationLeaf modification Thorn

STEM BRANCHING shoot tip/apex main stem lateral branch - Indefinite - Racemose - Monopodial dead shoot tip Biparous Scorpiod (Zigzag)Helicoid (helix) Uniparous Cymose/Definite

Zigzag branching

TENDRILS tendrils

Cymose/Definite

Monopodial/Racemose/Indefinite