The smaller of the two kinds of spore produced by some ferns. See also megaspore.
- Both of these genera are heterosporous, meaning that each species produces two distinctly different types of spores: microspores and megaspores.
- The embryogenic process originated during anther culture may have different origins, for example, haploid cells such as microspores or pollen grains, or somatic cells from anther tissues.
- They have male spores called microspores and female spores called megaspores.
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