Root tip morphology and zoning

Morphologically, the observation of wheat roots by the root analysis system has many similarities between stems and wheat roots and stems. They are two components of the plant's major axis, each of which is compatible with its physiological functions. However, due to the differences in the root and stem growth environment, they are quite different in morphology. The roots are weak. No chlorophyll, no joints and internodes, no leaf-like organs, curved growth, most of which occur in the mature area.
Relatively speaking, because the physiological activities undertaken by the roots are basically the same and the environmental conditions are relatively stable, it is not as large as the above-ground organs. The number of roots in the early growth period is less, and there are not many branches. In the middle and late stages, with the growth of shoots, the number of roots and the number of branches increased accordingly. The roots that make up a complete root system do not differ greatly in morphology, but there are still large differences in growth. If the number of primary roots is small, rooting is concentrated, deep into the earth, thin and long. Tough. The root diameter of the root is basically the same, the root hair and branch density are small; the number of secondary roots is large, roots are scattered, the soil is shallow, and the roots are dense, with dense root hairs and more branches. As far as a single secondary root is concerned, its length, rent, branching, etc. will vary depending on the nature of the festival. The root tip is the area where the roots grow most actively, and various tissues of the root are differentiated from the root tip.
The basic shape of the root tip: The young root of the wheat root from the top to the root hair is called the root tip. The root tip is the area where the root life activist is active. A series of life activities such as tissue differentiation, elongation and growth of roots are accomplished through root tips. After the root tip is the root hair area, which is responsible for the physiological functions such as water, nutrient absorption, transportation, and organic synthesis. As the old root hairs wither away and new root hairs continue to emerge, the apical part continues to move forward, the root tip above the part gradually matures, the mechanical tissue matures and loses its ability to absorb water and fertilizer, only play a fixed, transduction and metabolism.
The structure of the root end is not complicated by stem ends, because the root apical meristem does not produce lateral organs. The primary root apices of primary roots are similar in anatomy. In botany, according to its anatomical structure, physiological function, etc. From the top, the root tip is divided into four sections: root crown, meristematic zone, elongation zone, mature zone, or root hair zone. The four apical segments are not easily identifiable in their external morphology because, apart from the clear boundaries between the root canopy and the meristem, there are gradual transitions between the other segments, with no strict boundaries.

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