Abstract
The paper deals with gametophytes ofEleocharis geniculata. Male archesporium is a file of 2 or 3-hypodermally placed cells. Anther wall is four-layered. Some cells of another epidermis are filled with tannin. Fibrous endothecium with usual structure develops from the hypodermis. Tapetum of the secretory type is developed. Its cells are uninucleate.
Pollen mother cells are polygonal in outline. Meiosis results in four haploid nuclei that later segregate as three non-functional and a functional nucleus. Septa are formed between them. The three effete nuclei are delimited by hyaline areas. After meiosis the cytoplasm of the pollen mother cell shows differential staining and soon pollen wall is thrown into folds. The folds are pronounced till the 2-celled stage of the pollen grain. Mature pollen grains are 3-celled at anthesis and show vacuolate cytoplasm with starch grains.
Female archesporium is generally a single cell. It cuts off a parietal cell which later forms a three-layered tissue. Megaspore tetrads are linear. The chalazal megaspore forms the Polygonum type of embryosac. Egg and synergids show normal structure. Secondary nucleus is centrally situated. The three ephemeral antipodals are housed in a chalazal pouch. Funicular obturator is developed.
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References
Dnyansagar, V. R. and Tiwari, D. K. “Sporogenesis and gametophytes ofFimbristylis quinquangularis Kunth,”Bull. Bot. Soc. Univ. Saugar, 1956,8, 3–6.
Gupta, M. N... “Morphological studies in Cyperaceae. I. Development of the ovule and the gametophytes inFimbristylis dichotoma Vahl.,”Agra Univ. Jour. Res., 1962,11(1), 59–67.
Håkansson, A... “Die Chromosomen einiger Scirpoideen,”Hereditas, 1928,10, 277–92.
—————.. “Meiosis and pollen mitosis in X-rayed and untreated spikelets ofEleocharis palustris,” Ibid., 1954,40, 325–45.
Padhye, M. D. and Moharir, S. K. “Studies in embryology ofCyperus tegetum Roxb.,”Proc. Ind. Acad. Sci., 1958,45 B, 89–95.
Padhye, M. D... “Microsporogenesis and male gametophyte ofCyperus compressus Linn.,”J. biol. Sci., 1959,2, 116–17.
Padhye, M. D... “A contribution to the life-history ofKyllinga triceps Rottb.,”Bull. bot. Soc. Coll. Sci. Nagpur, 1960,1, 1–15.
*----- ..Ph.D. Thesis, Nagpur University, 1967.
Patel, C. M. and Shah, C. K. “The life-history ofCyperus niveus Retz.,”J. Gujarat Univ. Sci. Number, 1962,5 (1 and 2), 148–57.
Piech, K. .. “Zur Entwicklung der Pollenkorner beiScirpus lacustris L.,”Bull. Acad. Polonaise Sci. Lettres, Cl. Sci. math. nat., 1924, 113–23.
—————.. “Zytologische Studien ander GattungScirpus,” Ibid., 1928,B, 1–43.
Shah, C. K... “Pollen development in some members of the Cyperaceae”Plant Embryology, A Symposium, C.S.I.R., New Delhi 1962, 81–93.
Tanaka, N... “Chromosome studies in Cyperaceae. VII. Chromosome number and pollen development ofFimbristylis,”Bot. Mag. Tokyo, 1939,53, 480–87.
Walters, S. M... “On the vegetative morphology ofEleocharis R. Br.,”New Phytol., 1950,49, 1–7.
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Communicated by Prof. T. S. Mahabale,f.a.sc.
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Padhye, M.D. Male and female gametophytes ofEleocharis geniculata Roem.Et schult. Proc. Indian Acad. Sci. 67, 54–60 (1968). https://doi.org/10.1007/BF03051684
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DOI: https://doi.org/10.1007/BF03051684