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The process of development of pollen mother cell into a mature pollen grain includes:
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Microsporogenesis
1. Every cell of the sporogenous tissue is a potential pollen mother cell (PMC) and can give rise to microspore tetrad/pollen grains.
2. But some of them for go this potential and other becomes differentiated into the pollen mother cell or microspore mother cells.
3. Each microspore mother cell undergoes meiosis to form a cluster of four haploid cells, called microspore tetrad. The process is called microsporogenesis.
4. As the anther matures, the microspores dissociate from the tetrad and develop into pollen grains.
5. The nucleus of microspore undergoes into mitosis to form a large vegetative cell and a small spindle shaped generative cell that floats in the cytoplasm of the vegetative cell.
6. They develop two layered wall, the outer exine made of sporopollenin and the inner intine, made of cellulose and pectin.
2. But some of them for go this potential and other becomes differentiated into the pollen mother cell or microspore mother cells.
3. Each microspore mother cell undergoes meiosis to form a cluster of four haploid cells, called microspore tetrad. The process is called microsporogenesis.
4. As the anther matures, the microspores dissociate from the tetrad and develop into pollen grains.
5. The nucleus of microspore undergoes into mitosis to form a large vegetative cell and a small spindle shaped generative cell that floats in the cytoplasm of the vegetative cell.
6. They develop two layered wall, the outer exine made of sporopollenin and the inner intine, made of cellulose and pectin.
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