The main once are three: The core topics with the concerned, Study of the fundamental natural and processes of plant life.
There are 26 branches of botany.
1.morphology
2.anatomy
3.histology
4.cytology
5.plant physiology
6.taxonomy
7.ecology
8.plant geography
9.genetics
10.plant breeding
11.embryology
12.paleobotany
13.economic botany
14.plant pathology
15.organic evolution
16. biochemistry
17.biophysics
18.microbiology
19.molecular biology
20.palynology
21.biometrics
22.genetic engineering
Branches allied to botany
23.agronomy
24.horticulture
25.pharmacognosy
26.pedology