Abstract
The apical growth of the leaf primordium is augmented by apical and sub-apical initials. The development of the laminal complex takes place in three steps; the primary, secondary and tertiary. The primary laminal growth is connected with the organization of submarginal and marginal initials. The cessation of meristematic activity in the primary lamina is followed by the appearance of an intercalary meristem at its base. The activity of the intercalary meristem results in the formation of the secondary lamina, which later connects the primary lamina with the rachis. A major part of the laminal complex is the ‘composite lamina’ produced by the juxtaposition of primary lamina and secondary meristem as a result of differential abaxial expansion of the latter. The composite lamina alone develops Haut which is identical with the juxtaposed primary lamina. The primary lamina (the Haut and reins) is functionless and shrivels up at late stages. The protoderm of the leaflets is regenerated from the split surfaces of the secondary meristem from which alone the pinnae are derived.
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References
Arber, A... “On the development and morphology of the leaves of palms,”Proc. roy. Soc. Lond., 1922,93 B, 249–61.
Eames, A. J... “Neglected morphology of the palm-leaf,”Phytomorphology, 1953,3, 172–89.
Goebel, K... “Die Gestaltungsverhältnisse der Palmenblätter,”Ann. Jard. bot. Buitenz., 1926,36, 161–85.
Padmanabhan, D... “Leaf development in palms,”Curr. Sci., 1963,32, 537–39.
Periasamy, K... “Morphological and ontogenetic studies in palms. I. Development of the plicate condition in the palm-leaf,”Phytomorphology, 1962,12, 54–64.
----- .. “Morphological and ontogenetic studies in palms. II. Growth pattern of the leaves ofPhoenix andCaryota after the initiation of plications.Ibid., 1966,16 (in press).
Yampolsky, C... “A contribution to the study of the oil palm,Elaeis guinensis Jacq.,”Bull. Jard. bot. Buitenz., 1922,2, 107–74.
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Communicated by Prof. T. S. Sadasivan,f.a.sc.
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Padmanabhan, D. Some aspects of histogenesis in the leaf ofPhoenix sylvestris L. Proc. Indian Acad. Sci. 65, 221–229 (1967). https://doi.org/10.1007/BF03052213
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DOI: https://doi.org/10.1007/BF03052213