ANATOMICAL STUDrES ON SOME SPECIES GENUS Vicia | ||
| Journal of Plant Production | ||
| Article 8, Volume 28, Issue 5, May 2003, Pages 3497-3511 PDF (1.73 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jpp.2003.243294 | ||
| Authors | ||
| A. I. EI-Shaarawi,; Fadia A. Youssef; Sawsan M. Abou-Taleb | ||
| Department of Agricultural Botany, Faculty of AgricUlture, Cairo University, Egypt | ||
| Abstract | ||
| This investigation was carried out at the Agricultural Experiment and Research Station, Faculty of Agriculture, Cairo University, Giza, Egypt. dJring the season of 1997/98 to study the anatomical features of seven species of the genus Vicia. Transverse sections of primary root at the age of two weeks revealed that the stele was tetrarch in V. faba and triarch in Ihe other studied species. The primary xylem strand was solid in V. hybrida root, while in the other species the scular cylinder exhibited pith with different areas in root center. Transections of the first internode of the main stem showed that in V. {aba most of transitional steps towards the stem structure took place in this inter ode. In the other six species, this transitional internode exhibited intermixture of (O~t - like and stem - like orientations of the vascular tissues. The second internode of the main stem revealed structure of true stem in V. taba and V. narbonensis. In the other five species thrs internode appeared wide cortex and the center of section was 0 cupied by xylem vessels of nearly collateral fused vascular bundles. Some of the epH::termal cells of fifth inrenode contained dark - yellow and brown contents. differentiated as idioblasts in V. sativa. Prismatic or rhomboid crystals were noticed in primary hloem and cortical bundle regions in V. ervl1ia and V. narbonensis. Transections of median internode of the tallest basal branch. at the age of 12 weeks, revealed that V. {aba showed the highest cross sectional area f.nd V. pa/aestina or V. hybrida appeared the lowest cross sectional area. This interno e was hollow in the species of V. tebe, V. narbonensis and V. sativa and solid in the species of V. villos a , V. palaestina, V. hybn'da and V. ervilia. Stems and leaf blad s of V. palaestina and V. villas a were characterized by the presence of fan -like bodies in some epidermal cells, and outer layers of stem cortex. Transvers sections of the leaflet blades of Ihe tallest branch leaf showed that V. faba had thicker midrib and midvein, while V. palaestina. V. hybrida. and V ervi/ia species appeared lower midvein size. | ||
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