Week 3
Lecture 2
Flower Bud Initiation
& Development

BUD:
Buds are undeveloped and un-elongated stems
composed of a very short axis of meristem cells
from which arise embryonic leaves, lateral buds and
some time only flower parts.

Bud Classification:
1- On the basis of function
 Vegetative Buds
 Reproductive buds
 Simple buds
 Mixed buds
 Compound buds

2- On the basis of activity
1. Dormant bud
2. Growing bud

3- On the basis of position
1. Apical or terminal buds
2. Lateral or axillary buds
3. Adventitious buds

On the basis of Morphology
• Scaly bud/Covered bud
• Hairy bud
• Naked bud

Vegetative bud:
Those buds which bear unfolded or unexpanded
leaves together with primodium of vegetative buds
Flower bud:
Those buds in which bear unfolded or
unexpanded parts contain only flower parts. They
may contain brackets, hairs and are called fruit
bud
Simple bud:
Those buds which contains either flowers parts
or vegetative tissues.
Example: Cherry, Peach, Plum etc.

Mixed bud:
Those buds which contain flower parts as well ad
vegetative parts.
Example: Apple, Pear, Quince etc.
Compound buds:
Those buds which contain two or more vegetative
buds or mixed buds. Example: Grapes. In grapes
both branches and leaves on single bud some time
leaves as well as tendrils and fruit bunch.
Mixed Flower Buds in
pear

Apical or Terminal bud:
Those buds which develop at the apex of long shoots
or spurs; Example: Mango, Banana, Walnut, Letchi,
Loquat, Apple, Pear etc.
Lateral or Axillary bud:
Those buds which develop at the axil of leaves or on
the nodes of branches. Example: Plum, Cherry, Citrus,
Date palm, Mulberry etc.

Dormant bud:
Those buds which do not grow into shoots or spur
during dormant period of growth.
Example: Plum, Cherry, Apple, Peach etc.

1. Growing bud
The sprouted bud which started to grow
is called as growing bud
1. Scaly bud/ covered . Covered with scale
or leaves to protect the embryonic
2. Naked not covered with scales
3. Hairy . Covered with hairs