Yes you can apply for Junior Basic Training course after securing 45% marks in B.Com degree course ..

Here I am giving you information about required eligibility to apply for Junior Basic Training course below :

Eligibility for JBT
You have to passed 12th grade senior secondary school certificate/intermediate or its equivalent examination with at least 50% marks.
Or
You must pass a bachelor degree must have at least 45% of marks.
Age limit :
The age limit for the course is 17th to 28th year.

Subjects of JBT course :
Philosophical Perspective of education
Educational Technology
Sociological perspective technology
Teaching of environmental studies (science)
Child Development
Teaching of EVS social science
Health & physical education
Teaching of mathematics
Teaching of English
Teaching of Hindi