পোষক স্তর;
tapetum definition
A layer of cells in the anthers of flowering plants that provides nutrients to the developing pollen grains.
tapetum শব্দটির synonyms বা প্রতিশব্দ
tapetum Example in a sentence
The tapetum, a specialized layer of cells lining the anther sac, plays a vital role in pollen development.
In flowering plants, the tapetum provides nutrition and protection to the immature pollen grains.
The tapetum secretes enzymes that degrade the callose walls surrounding the pollen tetrads, allowing the release of free pollen grains.
Specialized tapetum cells, known as tapetal cells, undergo programmed cell death and their contents are released to nourish the developing pollen.
The tapetum also helps in the formation of the pollen exine, which contributes to pollen grain resistance and dispersal.
Variations in tapetum morphology and function can impact pollen fertility and germination rates.
In certain plant species, the tapetum accumulates secondary metabolites, such as flavonoids, which contribute to pollen color and attract pollinators.
The tapetum plays a role in pollen viability, influencing the success of pollination and reproduction.
Manipulating the tapetum through genetic engineering or chemical treatments can improve pollen quality and seed production.
Understanding the intricate workings of the tapetum is crucial for advancing plant reproductive biology and crop improvement strategies.