UNIT 1 MODULE 3 VEGETATIVE PROPAGATION CAPE BIOLOGY
UNIT 1 MODULE 3 : VEGETATIVE PROPAGATION CAPE BIOLOGY
OBJECTIVE �Discuss examples of asexual reproduction in plants e. g. ginger, meristems, hormone stimulation.
VEGETATIVE PROPAGATION DEFINITION The formation of new plants from the outgrowth of old ones. �This outgrowth separates from the parent plant. �It can occur naturally but it is exploited in agriculture to propagate crop plants – this is known as artificial propagation. �Vegetative propagation can occur in a number of organs
PERENNATING ORGANS These are organs of propagation, they can store food and can survive harsh conditions such as cold or lack of water.
BULB Swollen underground storage leaves with short stem. Surrounded by brown scaly leaves. Onions, garlic
CORM Short Eddoe underground stem which grows vertically. It is surrounded by scale leaves and has adventious roots.
RHIZOME Horizontal underground stem with leaves, buds and adventitious roots. New growth from axillary bud Ginger
TAPROOT Swollen main root Carrot, radish with a short stem.
STEM TUBER Swollen ends of White potato an underground stem. New plants grow from axillary buds.
ROOT TUBER Swollen ends of a fibrous root. Sweet potato
STOLON Horizontally growing stem which forms adventitious roots and leaves at their ends. Spider Plant bluemooncandles. wordpress. com
RUNNER A branch of the Sweet hearts, main stem which water grass lengthens and creeps along the alevelnotes. com surface of the ground. It has scale leaves and buds from which adventitious roots and new plants grow.
LEAF BUD Develop along edges of the leaf. These grow into new plants. Some succulents tutorvista. com
SUCKER Arise from the underground part of the plant. Bananas hardytropicals. org
- Slides: 14