LENGTH OF THE APICAL UNBRANCHED ZONE OF MAIZE AXILE ROOTS - ITS RELATIONSHIP TO ROOT ELONGATION RATE

Citation
S. Pellerin et F. Tabourel, LENGTH OF THE APICAL UNBRANCHED ZONE OF MAIZE AXILE ROOTS - ITS RELATIONSHIP TO ROOT ELONGATION RATE, Environmental and experimental botany, 35(2), 1995, pp. 193-200
Citations number
23
Categorie Soggetti
Environmental Sciences","Plant Sciences
ISSN journal
00988472
Volume
35
Issue
2
Year of publication
1995
Pages
193 - 200
Database
ISI
SICI code
0098-8472(1995)35:2<193:LOTAUZ>2.0.ZU;2-2
Abstract
The length of the apical unbranched zone was studied in maize axile ro ots. Plants were grown in an aeroponic growth chamber allowing direct measurements on individual axile roots. The total length of the roots and the length of the apical unbranched zone were measured regularly. A commonly accepted hypothesis, according to which laterals emerge at a constant distance behind the root tip, was refuted. Conversely, a li near relationship was found between the length of the apical unbranche d zone and the root elongation rate. This suggests that laterals emerg e on a root segment at a constant time interval after lateral primordi a are differentiated.