With respect to these the histogen theory fails. Korper-Kappe Theory The Korper-Kappe theory of root apical organization proposed by Schuepp (, ). Meristems, Tissues, Shoot apex, Root apex, Apical Cell Theory, Shoot. Apical Meristem Histogen Theory, Korper-Kappe Theory, Mantle-Core Theory, Tunica. Plant Anatomy Theories Different theories about plant anatomy and different types of cells playing important role in proper functioning of plant.

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Composition of Sporopollenin in Spores and Pollen Plants.

The Korper-Kappe Theory of Root Apex | Essay | Botany

This theory of root meristem was proposed in by Schiiepp who regarded the occurrence of two systems of cell seriation that characterize the root apex with reference to planes of cell division in its jorper. The histogens are called dermatogen, periblem and plerome that respectfully form epidermis, cortex and vascular cylinder that are present in a mature root.

In this type there tjeory a single row of initials which, ultimately, gives rise to various zones of the root including the root cap. The root meristem exhibits multicellular structure. It consists of conspicuous longitudinal files of cells. Continuous T-divisions result in the formation of double-rowed region over a single rowed region. The apical initial is tetrahedral in shape and generates root cap from one side.

In the korper the initial cell first divides by theoyr partition and forms two cells. In other words all tissues that compose a mature root including root cap are the derivatives of a single apical cell.


The apical meristem of the root is sub- terminal in position as the root cap remains terminal. In Zea mays monocot dermatogen generates root cap only and this histogen is referred to as calyptrogen. This type is found in majority of dicotyledonous plants. Ontogeny of Stoma in Plants Plants.

Top 3 Theories of Root Apical Meristem in Plants | Botany

The korper-kappe theory of root apex is comparable with tunica-corpus theory of shoot apex. Equisetum, Adiantum and Polypodium etc.

Thery third type is found in Haemanthus coccineus. In this type, generally two rows of initials are observed at the apex. Apical cell theory is confined to vascular cryptogams only as the root apical meristem of flowering plants does not have a single apical cell. The following points highlight the top three theories of root apical meristem in plants. The cells of this region divide first horizontally. It is based on differences in the planes of cell division. In Brassica dicot dermatogen generates both protoderm and root cap and this histogen is referred to as dermatocalyptrogen.

Anticlinal division is the characteristic of tunica kappr corpus exhibits both anticlinal and periclinal division. The two cells thus formed kape the capability of cell division. This theory was proposed by Nageli who drew the attention to the occurrence of a single apical cell or apical initial that composes the root meristem. Hanstein in advocated the theory.


A single apical cell is present only in vascular cryptogams, e. The body-cap concept and tunica-corpus concept both are based solely on the planes of cell division.

The central part of root cap is the columella where the cells are arranged in longitudinal files.

The Korper-Kappe Theory of Root Apex | Essay | Botany

The daughter cells are parallel in arrangement, share a common wall and divide by transverse partition followed by longitudinal partition in one cell. The daughter cell that faces the base of root, i. Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top.

In root with dermatocalyptrogen the cap extends into protoderm. Apical Cell Theory 2. One of the layers gives rise to the stele and the other to the cortex and theoty cap. The daughter cells divide by transverse partitions followed by longitudinal partitions.

This occurs in downwardly pointed roots. Though histogen theory is abandoned to explain shoot apex, Eames and MacDaniels illustrated the root apical meristem on the basis of histogen concept.

The outer region of the root apex is the Kappe.