This document discusses different types of buds based on function, activity, position, and morphology. Buds are undeveloped stems that contain embryonic leaves, lateral buds, or flower parts. Buds can be classified as vegetative, reproductive, simple, mixed, or compound based on their function. They can also be classified as dormant, growing, apical/terminal, lateral/axillary, or adventitious based on their activity and position. Morphologically, buds can be scaly/covered, hairy, or naked. Examples are provided for each bud type.

1. Week 3
Lecture 2
Flower Bud Initiation
& Development

2. 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.

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

4. 2- On the basis of activity
1. Dormant bud
2. Growing bud

5. 3- On the basis of position
1. Apical or terminal buds
2. Lateral or axillary buds
3. Adventitious buds

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

7. 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.

8. 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

9. 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.

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

11. 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