Page 156 - Ultimate Visual Dictionary (DK)

PLANTS

Vegetative ADVENTITIOUS BUD
Mexican hat plant
(Kalanchoe
daigremontiana) Apex of
leaf
reproduction

MANY PLANTS CAN PROPAGATE THEMSELVES by vegetative
reproduction. In this process, part of a plant separates
off, takes root, and grows into a new plant. Vegetative
reproduction is a type of asexual reproduction; that
is, it involves only one parent, and there is no Lamina
(blade)
fusion of gametes (sex cells). Plants use various of leaf
structures to reproduce vegetatively. Some plants
use underground storage organs. Such organs include
CORM
Gladiolus rhizomes (horizontal, underground stems), the
(Gladiolus sp.) branches of which produce new plants;
Leaf
bulbs (swollen leaf bases) and corms (swollen stems),
margin
which produce daughter bulbs or corms that separate
off from the parent; and stem tubers (thickened
Notch in leaf
underground stems) and root tubers (swollen margin containing
adventitious roots), which also separate off from meristematic
(actively dividing)
the parent. Other propagative structures include cells
runners and stolons, creeping horizontal stems that
take root and produce new plants; bulbils, small bulbs that
develop on the stem or in the place of flowers, and then
drop off and grow into new plants; and adventitious buds,
miniature plants that form on leaf margins before dropping
to the ground and growing into mature plants.

BULBIL IN PLACE OF FLOWER Adventitious bud
Orange lily (detachable bud Petiole
(Lilium bulbiferum) with adventitious (leaf stalk)
Scar left roots) drops
by flower from leaf
Leaf

Pedicel
(flower stalk) STOLON
Ground ivy
(Glechoma hederacea)
Internode Parent
Terminal plant
bud
Stolon
(creeping stem)
Detachable Node
bulbil formed
in place of
flower Node
Peduncle
(inflorescence
stalk) Adventitious root Daughter plant
of daughter plant developed from
lateral bud

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