The magic of life - the germination process of plants
(Edited)
The germination of seeds is a fascinating process that marks the beginning of a new life cycle in plants, it contains a series of metabolic and morphogenetic events that turn a tiny seed into a seedling capable of subsisting on its own, it is a journey full of transformations that reminds us of the complexity and the greatness of nature.
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The whole process begins with the seed imbibition, where it absorbs water from the surrounding environment, usually the soil, which is why water is important in the first instances of planting. This hydration activates a series of biochemical reactions that trigger germination, the seed swells, its covering softens and the ideal conditions are created for the embryo to wake up from its dormancy.
In the same sense, as the embryo becomes active, the first structure that emerges from the seed is the radicle, which would become the first root. This primary root, like a small explorer, makes its way through the seminal cover and goes deep into the soil in search of water and nutrients, the radicle plays a crucial role in anchoring the seedling to the soil and absorbing the essential elements for its development. As a general culture, there are many people who describe the roots of plants as a reticular system, from our perspective it should not be called that way because the radicula disappears after its emergence in the following semen.
In this same order of ideas, after the emergence of the radicle, the hypocotyl emerges, an embryonic stem that pushes upwards, raising the seedling towards the soil surface, at its upper end is the plumule, the shoot that will give rise to the first true leaves of the plant, the plumule eagerly seeks sunlight, the energy that will boost its photosynthesis and growth.
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In many plants, the plumule is accompanied by the cotyledons, the first embryonic leaves that provide food to the seedling during its early stages of development. The cotyledons, full of nutrients stored in the seed, are essential for the survival of the seedling until it can perform photosynthesis on its own. Nature, in its infinite wisdom, has developed different types of germination to adapt to various environmental conditions, among the most common we find the epigeal germination that consists in the cotyledons emerging from the soil together with the plumule, as in the case of beans and sunflower, also the hypogeal germination in this case the cotyledons remain underground while the plumule emerges with the first true leaves, as in the case of peas and corn.
For germination to occur, it is required that the ecosystem where it is located has the appropriate conditions of humidity, solar radiation, good soil aeration, among others that determine the success of this process. Dear readers, germination goes beyond a simple biological process, it is a show of transformation and rebirth. It is nature's way of showing us a new life that emerges from the darkness of the earth, driven by the tireless force of natural processes.
Thank you for reading our articles, until a next installment.
Recommended bibliography |
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- Parker, R. (2000). The science of plants. Paraninfo. Madrid, Spain.
Sources
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