Palynological Studies of Three Taxa and One F1 Hybrid in the Genus Talinum Adans
Keywords:acetolysis; aperturate; colpi; generic; hybrid; pollen grains; pollen units; Talinum
Acetolysed pollen grains of Talinum paniculatum (Jacq.) Gaertn., Talinum triangulare (Jacq.) Willd. pink petals, Talinum triangulare (Jacq.) Willd. white petals and Talinum triangulare (Jacq.) Willd. pink and white petals F1 hybrid were studied in order to document their morphological structures and ascertain features of taxonomic significance among them. All the taxa have generic features which support their classification as a genus as well as distinct features which ascertain their individuality. Generic features include monad pollen unit, acolpate and monocolpate pollen grains as well as circular and ovate pollen shapes. The delimiting features include additional dyads pollen units in T. triangulare white petal and the F1 hybrid of T. triangulare pink and white petals, quadrangular pollen shape in T. paniculatum, bicolpate pollen grain in the F1 hybrid, tricolpate pollens in T. triangulare white petal and T. paniculatum, tetracolpate pollens in T. triangulare pink petal and T. paniculatum and pentacolpate pollen grains in T. paniculatum only. The shape of the pores in T. paniculatum also separated it from the varieties and hybrid of T. triangulare. Based on the pollen size, the pollens of T. paniculatum are Media (25 - 50 Âµm) while those of the two varieties of T. triangulare and their F1 hybrid are Magna (50 - 100 Âµm). The taxa of Talinum in this study can be separated based on their palynological features.
Adedeji O (2005). Pollen morphology of the three species of the genus Emilia Cass. (Asteraceae) from Nigeria. Thaiszia Journal of Botany 15:1-9.
Akinwusi O, Illoh HC (1996). Pollen grain morphology of some species of Hibiscus Linn. Nigerian Journal of Botany 9:9-14.
Arogundade OO, Adedeji O (2009) Pollen grain morphology of three species and a variety of Ocimum Linn. (Lamiaceae) in Southwestern Nigeria. Journal of Science and Technology 29(3):1-7.
Brasileiro BG, Barbosa JB, Jamal CM, Coelho OGL, Ronchi R, PizzioloVR (2016). Anatomical characterization, chemical composition and cytotoxic activit of Talinum triangulare (Jacq.) Willd (Portulacaceae). Ciência e Natura 38(2):665-674.
Edeoga RO, Ugbo RN, Osawe PI (1998). Palynomorphology of species of Commelina L. and Senna Toum. Ex. Mill. from Nigeria. New Botanist 25:1-10.
Ekpo IA, Osuagwu AN, Okpako EC, Agbor RB, Ekanem BE (2013). Physicochemical and morphological features of Talinum triangulare (water-leaf) exposed to hydrocarbon polluted soil. Global Journal of Biodiversity Science and Management 3(1):52-57.
Erdtman G (1952). Pollen morphology and plant taxonomy of Angiosperms. Almqvist and Wiksell, Stockholm.
Erdtman G (1960). The acetolysis method in a revised description. Svensk Botanisk Tidskrift Lund 54(4):561-564.
Hutchinson J, Dalziel JM (1954). Flora of West Tropical Africa. Second Edition, Volume I Part I. White Friars Press, London.
Nya EJ, Eka MJ (2015). Morphological characterization and hybridization of Talinum Triangulare land races for desirable metric characters in South Eastern Nigeria. The International Journal of Science and Technology 3(7):192-197.
Nyffeler R, Eggli U (2010). Disintegrating Portulacaceae: A new familial classification of the suborder Portulacineae (Caryophyllales) based on molecular and morphological data. Taxon 59(1):227-240.
Nyananyo BL, Olowokudejo JD (1986). Taxonomic studies in the genus Talinum (Portulacaceae) in Nigeria. Willdenowia 15(2):455-463.
Nyananyo BL (1992). Pollen morphology in the Portulacaceae (Centrospermae). Folia Geobotanical et Phytotaxonomica 27(4):387-400.
Ozeigbe M, Faluyi JO, Idowu, JA (2012). Inheritance of pigmentation patterns in Talinum triangulare (Jacq.) Willd. Ife Journal of Science 14(2):363-367.
Pacini E, Franchi GG (1999). Pollen grain sporoderm and types of dispersal units. Acta Societatis Botanicorum Poloniae 68(4):229-305.
PuntW, Hoen, PP, Blackmore S, Nilsson S, Le Thomas A (2007). Glossary of pollen and spores terminology. Review of Palaeobotany and Palynology 143(1-2):1-81.
Simpson MG (2010). Plant systematics. Second edition. Academic Press, Amsterdam.
Swarna J, Ravindhran R, Lokeswari TS (2015). Characterization of Talinum triangulare (Jacq.) Willd. germplasm using molecular descriptors. South African Journal of Botany 97:59-68.
Veselova TD, Dzhalilova KK, Remizowa MV, Timonin AC (2012). Embryology of Talinum paniculatum (Jacq.) Gaertn. and T. triangulare (Jacq.) Willd. (Portulacaceae s.l., Caryophyllales). Wulfenia 19:107-129.
Wagner WL, Herbst DR (2003). Supplement to the manual of the flowering plants of Hawaii. University of Hawaii Press, Hawaii.
How to Cite
Papers published in Notulae Scientia Biologicae are Open-Access, distributed under the terms and conditions of the Creative Commons Attribution License.
© Articles by the authors; licensee SMTCT, Cluj-Napoca, Romania. The journal allows the author(s) to hold the copyright/to retain publishing rights without restriction.
Open Access Journal - the journal offers free, immediate, and unrestricted access to peer-reviewed research and scholarly work, due SMTCT supports to increase the visibility, accessibility and reputation of the researchers, regardless of geography and their budgets. Users are allowed to read, download, copy, distribute, print, search, or link to the full texts of the articles, or use them for any other lawful purpose, without asking prior permission from the publisher or the author.