Abstract
The anatomy of the mature embryo and 34-day old seedling ofPicea smithiana (Wall) Boiss. has been described. The organization of the shoot and root apices in both is similar. The shoot apex shows five cytohistological zones, where the entire surface layer shows periclinal divisions and a small subapical initials zone. In the radicular and root apices there is a common initiating zone for the stele and columella in the centre surrounded by another common initiating zone for the cortex and peripheral region of the root cap. In the mature embryo thekappe divisions of the protoderm resulting in the peripheral region of the cap can be noted, which, however, disappear in the root of the seedling. The 34-day old seedling shows a root-hypocotyl-cotyledon vasculature without any connection with the shoot, where no vasculature has yet developed.
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Communicated by Prof. V. Puri, F.A.Sc.
This work has been financed in part by a grant made by the United States Department of Agriculture, Agricultural Research Service, authorised by Public Law 480.
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Venkataratnam, K., Chacko, B., Deshpande, B.D. et al. Anatomy of the mature embryo and seedling ofPicea smithiana (Wall) Boiss. Proc. Indian Acad. Sci. 81, 101–110 (1975). https://doi.org/10.1007/BF03050750
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DOI: https://doi.org/10.1007/BF03050750