Wheat root differentiation occurs

November 21, 2023

Wheat and other grass crops are multicellular plants. In its long evolutionary process, different cells have undergone a series of continuous differentiation processes, resulting in morphological and structural differences. As a result of cell differentiation and physiological division, cells of similar morphology and structure are brought together to form a certain plant tissue. Different organizations closely coordinate and coordinate with each other to form different organs with certain morphological structures and physiological functions, ie, vegetative organs and reproductive organs. K. Yi pointed out that due to differences in the living environment and the functions of the above-ground and underground parts, the original axis-shaped plant body was divided into two parts: seedling (shoot) and root. Therefore, as two kinds of vegetative organs, roots and stems have a close relationship in phylogeny: they cross each other in the plant body and are two components on the same unit axis, and their structures have many similarities. However, because the subterranean environment is relatively simpler than the ground, the root evolves to be simpler than the stem and maintains some of the more primitive traits that no longer exist in the stem.
The very origins of the species have certain changes in their ontogeny. The seed plants have a radicle or simply a root meristem present at the root (root) of the radicle. The meristem of the root does not occur on the surface of the tissue or organ like the meristem in the upper embryo sleeve, but is located deep in the tissue at the root end of the embryo. It has differentiated and formed as early as the seed matures, and basically has roots. The unique cell type, but it is still dormant. Until the seeds germinate, the meristem of the root restores its mitotic function, and then enters into a further differentiation process of the growth phase. There are obvious differences in the development of secondary root and seed root of winter wheat. For the analysis of plant units, secondary roots originate around the internodes of the plant unit. Generally, the root primordium of the above-ground plant unit is in a dormant state, but it still has the ability or potential for hair rooting, and when it is suitable (such as when the surface humidity is large, etc.), rooting can still occur, especially several value units adjacent to the surface. Even more so. The number of hairy roots in the plant cells below the rhizome was small, and analysis by the root system revealed that there were generally 2 lateral roots per unit. The rooting ability of the plant unit in the Festival of Fame is relatively strong. One share of each Rong Rong may reach 1-3 in the winter and 4-7 in the spring.

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