Initiation of the Vascular System and the Transition to Flowering in Early Tassels ofZea maysLand Race Chapalote (Poaceae)
- 1 November 1999
- journal article
- research article
- Published by University of Chicago Press in International Journal of Plant Sciences
- Vol. 160 (6) , 1111-1125
- https://doi.org/10.1086/314200
Abstract
Serial transections of young tassels of (Zea mays land race) chapalote revealed relationships between the vascular system in its procambial state and the lateral primordia along the axis. A lateral tassel primordium usually consists of an indefinite rim with a prolongation that will become a tassel branch or spikelet pair. A lateral tassel primordium usually develops via modifications of the vegetative leaf primordium in which the leaf apex is enhanced but the leaf base and the bud it produces are suppressed. The clearest sign of the transition from the vegetative state to the tassel is the scale leaf, which is intermediate in form between a vegetative leaf and a lateral tassel primordium. Procambial traces differentiate in isolation in the tassel axis in response to the lateral tassel primordia. Adjacent procambial traces then link axially into sympodia to initiate the three‐dimensional vascular system of the tassel axis. Older sympodia occur near the center of the axis interior to more recently initiated procambial traces. Procambial continuity does not occur between the tassel axis and the lateral primordia until isolated traces in the lateral primordia link with the sympodia in the tassel axis. The transition from distichy to polystichy by the lateral tassel primordia occurs as the narrowing of the leaf base makes space available on the tassel axis for lateral primordia out of the vegetative distichous plane.Keywords
This publication has 15 references indexed in Scilit:
- Procambial Initiation for the Vascular System in the Spikelet of WheatInternational Journal of Plant Sciences, 1998
- Procambial Initiation for the Vascular System in the Spike of WheatInternational Journal of Plant Sciences, 1997
- Development of open and closed leaf sheaths in Festuca trachyphylla and Festuca rubra (Poaceae)Canadian Journal of Botany, 1992
- Cell lineage in plant developmentCurrent Opinion in Genetics & Development, 1991
- THE VASCULAR SYSTEM OF THE INFLORESCENCE AXIS OF ANDROPOGON GERARDII (GRAMINEAE) AND ITS BEARING ON CONCEPTS OF MONOCOTYLEDON VASCULAR TISSUEAmerican Journal of Botany, 1977
- Growth and Development of the Wheat Tiller. I. Growth and Form of the Tiller BudAustralian Journal of Botany, 1975
- The Problem of Leaf Morphology and Evolution in the MonocotyledonsThe Quarterly Review of Biology, 1973
- Leaf and Bud Initiation in the GramineaeBotanical Gazette, 1945
- Developmental Anatomy of the Shoot of Zea mays LAnnals of Botany, 1942
- On the Vascular Course in the Male Inflorescence of Zea MaysJournal of Plant Research, 1939