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COMPARATIVE MORPHOGENESIS OF THE DIMORPHIC LEAVES OF CYAMOPSIS TETRAGONOLOBA
Author(s) -
Sparks Phillip D.,
Postlethwait S. N.
Publication year - 1967
Publication title -
american journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.218
H-Index - 151
eISSN - 1537-2197
pISSN - 0002-9122
DOI - 10.1002/j.1537-2197.1967.tb06921.x
Subject(s) - biology , primordium , meristem , cyamopsis , lamina , botany , morphogenesis , leaflet (botany) , guar , agronomy , shoot , genetics , gene
Cyamopsis tetragonoloba , guar, produces two leaf forms: a simple leaf and a trifoliate leaf. The steps in the development of each of these forms have been investigated in an attempt to determine the precise point at which the leaf primordium becomes destined to produce one or the other characteristic leaf shapes. Up to 140 μ in length the leaf primordia are morphologically indistinguishable. If a simple leaf is to be formed the marginal meristem remains continuous and initiates only lamina. If a trifoliate leaf is to be formed the continuity of the marginal meristem is interrupted by a group of “pocketal” cells dividing it into an upper lamina meristem and a basal leaflet buttress.