Fasciation in pea: Basic principles of morphogenesis

Fasciation in pea: Basic principles of morphogenesis A study of fasciated pea Pisum sativum L. (Fabaceae) mutant Shtambovy in comparison with the wild type (Nemchinovsky cultivar) has shown that fasciation is a result of abnormal cohesion of axial or other structures which arise in a superfluous amount due to uncontrolled meristic processes. In some cases, the organs with the same number and position as in the wild type can be fascinated. Subsequent defasciation and some features of tissue differentiation suggest that the meristem of a fasciated shoot retains a certain degree of discreteness which reflects its complex structure. The number and position of leaves in a node is a function of the diameter of the leaf primordium inhibitory zone, size of the shoot apical meristem, and number of bundles in a shoot. In the absence of the apex proliferative activity combined with the reduction of phyllomes in the upper nodes, abnormal cohesion of the second order axes, racemes, can take place. As a result, inflorescences of special type develop. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Developmental Biology Springer Journals

Fasciation in pea: Basic principles of morphogenesis

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Publisher
Nauka/Interperiodica
Copyright
Copyright © 2006 by Pleiades Publishing, Inc.
Subject
Life Sciences; Developmental Biology; Animal Anatomy / Morphology / Histology
ISSN
1062-3604
eISSN
1608-3326
D.O.I.
10.1134/S1062360406060063
Publisher site
See Article on Publisher Site

Abstract

A study of fasciated pea Pisum sativum L. (Fabaceae) mutant Shtambovy in comparison with the wild type (Nemchinovsky cultivar) has shown that fasciation is a result of abnormal cohesion of axial or other structures which arise in a superfluous amount due to uncontrolled meristic processes. In some cases, the organs with the same number and position as in the wild type can be fascinated. Subsequent defasciation and some features of tissue differentiation suggest that the meristem of a fasciated shoot retains a certain degree of discreteness which reflects its complex structure. The number and position of leaves in a node is a function of the diameter of the leaf primordium inhibitory zone, size of the shoot apical meristem, and number of bundles in a shoot. In the absence of the apex proliferative activity combined with the reduction of phyllomes in the upper nodes, abnormal cohesion of the second order axes, racemes, can take place. As a result, inflorescences of special type develop.

Journal

Russian Journal of Developmental BiologySpringer Journals

Published: Nov 22, 2006

References

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