Structure, distribution and taxonomic significance of leaf and petiole anatomical characters in five species of Terminalia (L.) (Combretaceae: Magnoliopsida)

Resumo

This paper presents a synthesis of a comparative leaf anatomy (lamina and petiole) of five species of the genus Terminalia found in southwest Nigeria. Collections of plants were made from different locations in Southwest Nigeria as the geographic locations of the sites of collection were also georeferenced with a GPS device. The samples were identified at the Herbarium of Botany Department, Obafemi Awolowo University (Ife), Nigeria, and were subjected to anatomical examinations. Quantitative data were subjected to statistical analysis and the characters vary significantly (P = 0.05). Anatomical characters which separate the taxa include petiole outline, epidermal features, vascular pattern, occurence of cortical and pericyclic fibres, presence/absence of, and types of trichomes etc, all found to be useful in identification of different species. The variations in the anatomical traits could be effectively used in taxonomic delimitation of the species and are helpful characters in determining the complexes in the genus such as adaptation of the species to xeric environments. The presence of 2-3 layers of palisade mesophyll cells in Terminalia mantaly, which is an adaptation of the species to drought, is diagnostic for the species. It is suggested that a comprehensive consideration of leaf lamina and petiole anatomy should be used as basis of taxonomy.

Referências

1. Adedeji, O. A. Leaf epidermal studies of the
2. species of Emilia Cass. (Senecioneae,
3. Asteraceae) in Nigeria, Botanical
4. Lithuanica, v. 10, no. 2, p. 121-133, 2004.
5. Adedeji, O. A.; Illoh, H. C. Comparative foliar
6. anatomy of the genus Hibiscus Linn. in
7. Nigeria. New Botanist, v. 31, p. 147-180,
8. Agboola, S. A. An Agricultural Atlas of
9. Nigeria. Nigeria: Oxford University Press,
10. Ayensu, E. S. Comparative vegetative
11. anatomy of the Stemonaceae
12. (Roxburghiaceae). Bot. Gaz., v. 129, p. 160-
13. , 1968.
14. Carlquist, S. Comparative plant anatomy.
15. New York: Holt, Rinehart and Winston, 1961.
16. Coates Palgrave, K. Trees of Southern
17. Africa. 1. ed. Cape Town: Struik, 1977.
18. Dalziel, J. M. Useful plants of West Tropical
19. Africa. London: Crown Agents, 1937.
20. Dupuy, B.; Mille, G. Timber plantations in the
21. humid tropics of Africa. FAO Forestry Paper.
22. Rome: FAO, 1993. (No. 98).
23. Ellery, K.; Ellery, W. Plants of the Okavango
24. Delta: A field guide. Durban: Tsaro Publisher,
25. Errington, L.; Chisumpa, S. M. Natural Dyes
26. of Zambia. Ndola: Mission Press, 1987.
27. Faleyimu, O. I.; Agbeja, B. O.; Akinyemi, O.
28. State of forest regeneration in Southwest
29. Nigeria. African Journal of Agricultural
30. Research, v. 8, no. 26, p. 3381-3383, 2013.
31. Illoh, H. C. Foliar epidermis and petiole
32. anatomy of four species of Celosia L. in
33. Nigeria. Feddes Repertorium, v. 106,
34. no. 1/2, p. 15-23, 1995.
35. Illoh, H. C.; Inyang, U. E. Foliar epidermis and
36. petiole anatomy in some Nigerian Solanum
37. Linn. species in the sub-genus Leptostemon
38. (Bitt) Dun. Glimpses in Plant Research,
39. v. 12, p. 73-86, 1998.
40. Irvine, F. R. Woody plants of Ghana with a
41. special reference to their uses. London:
42. Oxford University Press, 1961.
43. Jones, S. Forest tree improvement in Ghana.
44. Commonwealth Forestry Review, v. 48,
45. p. 370-376, 1969.
46. Keay, R. W. J. Trees of Nigerian. Oxford, UK:
47. Clarendon Press, 1989.
48. Lamb, A. F. A.; Ntima, O. O. Terminalia
49. ivorensis: Fast growing timber trees of the
50. Lowland Tropics. Oxford, UK: Commonwealth
51. Forestry Institute, 1971.
52. Lebrun, J.- P.; Stork, A. Énumération des
53. plantes à fleurs d’Afrique tropicale. 1-
54. Généralités et Annonaceae à Pandaceae.
55. Genève: Conservatoire et Jardin Botaniques
56. de la Ville de Genève, 1991.
57. Lemmens, R. H. M. J.; Wulijarni-Soetjipto, N.
58. Plant resources of South-East Asia. Dye
59. and tannin-producing plants. Wageningen:
60. Pudoc, 1991.
61. Lemmens, R. H. M. J.; Soerianegara, I.; Wong,
62. W. C. Plant resources of South-East Asia.
63. Timber trees: minor commercial timbers.
64. Leiden: Backhuys Publishers, 1995.
65. McGaw, L. J.; Rabe, T.; Sparg, S. G.; Jäger, A. K.;
66. Eliff, J. N.; Van Staden, J. An investigation on
67. the biological activity of Combretum spp.
68. Journal of Ethnopharmacology, v. 75,
69. p. 45-50, 2001.
70. Okeke, C. U.; Iroka, C. F.; Izundu, A. I.;
71. Okereke, N. C.; Onwuasoeze, C. I. Comparative
72. systematic leaf and petiole anatomical
73. studies on the genus Stachytarpheta found in
74. Awka. Nigerian Journal of Medicinal Plant
75. Studies, v. 3, p. 82-88, 2015.
76. Rodríguez, H. G.; Maiti, R.; Kumari, A.
77. Research advances on leaf and wood
78. anatomy of woody species of a Tamaulipan
79. thorn scrub forest and its significance in
80. taxonomy and drought resistance. Forest
81. Akinsulire et al.
82. Braz. J. Biol. Sci., 2018, v. 5, No. 10, p. 515-528.
83. Research, 5:3, 2016. https://doi.org/
84. 4172/2168-9776.1000183
85. Schmidt, E.; Lötter, M.; McCleland, W. Trees
86. and shrubs of the Mpumalanga and
87. Kruger National Park. Johannesburg: Jacana
88. Publisher, 2002.
89. Smith, N.; Scott, A. M.; Henderson, A.;
90. Stevenson, D. W.; Scott, V. H. Flowering
91. plants of the tropics. Princeton, New Jersey:
92. Princeton University Press, 2004.
93. Veenendaal, E. M.; Swaine, M. D.; Lecha, R. T.;
94. Walsh, M. F.; Abebrese, J. K.; Owusa-Afryie, K.
95. Responses of West African forest seedlings to
96. irradiance and soil fertility. Functional
97. Ecology, v. 10, p. 501-511, 1996.
98. White, F. The AETFAT chorological
99. classification of Africa: History, methods and
100. amplifications. Bulletin du Jardin
101. Botanique National de Belgique, v. 62,
102. p. 225-281, 1983.