Salah M. I. El Naggar
Not Available
ABSTRACT
Seed morphological characters and seed coat sculpture of 14 species of Malvaceae were examined to assess systematic implications of seed coat sculpture. These taxa are Malva aegyptia L., M. parviflora L., M. neglecta Wallr., M. nicaeensis All., M. sylvestris L., Lavatera cretica L., Alcea rosea All., Sida alba L., Abutilon theophrasti Medicus, A. pannosum (G. Forster) Schlecht., Abelmoschus esculentus (L.) Moench. Hibiscus sabdariffa L., H. trionum L., and Gossypium barbadense (L.). Seed shape, size and colour as well as outer epidermal cell patterns as seen by SEM, anticlinal cell boundaries and periclinal cell walls sculpture allow the recognition of two distinct groups among studied taxa. Seed coat features indicated both intra-group and inter-group relationships. Recognized groupings do not correspond well with the classical treatments of the Malvaceae, rather they suggest restructuring of tribal and generic taxonomy in the family. One important conclusion of this study is the inclusion of Lavatera cretica L. in the genus Malva as M. linnaei, M. F. Ray.
References Citation
How to cite this article
Salah M. I. El Naggar, 2001. Systematic Implications of Seed Coat Morphology in Malvaceae. Pakistan Journal of Biological Sciences, 4: 822-828.
DOI: 10.3923/pjbs.2001.822.828
URL: https://scialert.net/abstract/?doi=pjbs.2001.822.828
DOI: 10.3923/pjbs.2001.822.828
URL: https://scialert.net/abstract/?doi=pjbs.2001.822.828
REFERENCES
- Alxelius, B., 1992. Testa patterns in some species of Physalis L. and some other genera in the tribe Solaneae (Solanaceae). Int. J. Plant Sci., 153: 488-502.
Direct Link - Barthlott, W., 1981. Epidermal and seed surface applicability and some evolutionary aspects. Nordic J. Bot., 1: 345-355.
Direct Link - Bates, D.M. and O.J. Blanchard, 1970. Chromosome numbers in the Malvales: II. New or otherwise noteworthy counts relevant to classification in the Malvaceae, tribe Malveae. Am. J. Bot., 57: 927-934.
Direct Link - Canne, J.M., 1979. A light and scanning electron microscope study of seed morphology in Agalinis (Scrophulariaceae) and its taxonomic significance. Syst. Bot., 4: 281-296.
Direct Link - Canne, J.M., 1980. Seed surface features in Aureolaria, Brachystigma (Scrophulariaceae). Syst. Bot., 5: 241-252.
Direct Link - Chance, G.D. and J.D. Bacon, 1984. Systematic implications of seed coat morphology in Nama (Hydrophyllaceae). Am. J. Bot., 71: 829-842.
Direct Link - Chuang, T.I. and L.R. Heckard, 1983. Systematic significance of seed-surface features in Orthocarpus (Scrophulariaceae-subtribe Castillejinae). Am. J. Bot., 70: 877-890.
Direct Link - Fryxell, P.A., 1975. Generic relationships of Decaschistia (Malvaceae) and the description of a new tribe, Decaschistieae. Am. J. Bot., 62: 172-175.
Direct Link - Krebs, G., 1994. Taxonomische untersuchungen in der subtribus Malvinae. Feddes Rep., 105: 7-18.
CrossRef