Androgenesis is the in vitro development of haploid plants originating from totipotent pollen grains through a series of cell division and differentiation.
There are two methods of androgenesis as under:
i) Direct Androgenesis:
In this type, microscope behaves like a zygote and undergoes change to form embryoids which ultimately gives rise to plantlet.
ii) Indirect Androgenesis:
In contrast to the direct androgenesis, the microspores, instead of undergoing embryogenesis, divide repeatedly to form callus tissues which differentiate into haploid plantlets.