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Pollen Morphology of the Genus Rhododendron (Ericaceae) in Korea  

Park, Joon-Moh (Jeollabuk-Do Forest Environment Research Inst.)
Song, Un-Sook (Inst. of Agricultural Science & Technology, Chonbuk Nat. University)
Publication Information
Journal of Korean Society of Forest Science / v.99, no.5, 2010 , pp. 663-672 More about this Journal
Abstract
The pollen morphology of eleven species and three forms of the genus Rhododendron (Ericaceae) in Korea was examined using light, scanning electron and transmission electron microscopy. The pollen grains are grouped in permanent tetrahedral tetrads; viscin threads are present on the tetrads. The hexacolporate tetrads are of tricolporate monads whereby the apertures form in pairs at six points in the tetrad. The exine sculpture pattern is rugulate, scabrate or verrucate on mesocolpium but psilate, rugulate or microscabrate around the aperture on apocolpium. The exine of Korean Rhododendron pollen consists of tectum, columella, foot layer and endexine. The surface of viscin threads is more or less smooth. The threads are sometimes tangled together and occasionally divided into strands. Six types are recognized based on the pollen morphology. The types are: (1) Micranthum-type (rugulate mesocolpium and psilate apcolpium), (2) Tomentosum-type (rugulate mesocolpium and apocolpium), (3) Aureum-type (scabrate mesocolpium and rugulate apocolpium), (4) Brachycarpum-type (scabrate mesocolpium and rod shaped-microscabrate apocolpium), (5) Schlippenbachiitype (scabrate mesocolpium and round-microscabrate apocolpium) and (6) Weyrichii-type (verrucate mesocolpium).
Keywords
pollen type; Rhododendron; tetrahedral tetrad; viscin thread;
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  • Reference
1 Praglowski, J. and Grafstrom, E. 1985. The genus Carpodetus (Escalloniaceae): A pollen morphological enigma. Grana 24: 11-21.   DOI   ScienceOn
2 Punt, W., Hoen, P.P., Blackmore, S., Nilsson, S. and Le Thomas, A. 2007. Glossary of Pollen and Spore Terminology. Review of Palaeobotany and Palynology 143: 1-82.   DOI   ScienceOn
3 Rehder, A. 1940. Manual of cultivated trees and shrubs (Hardy in North American), (2nd ed). Macmillan Publ. Co. Inc., New York. pp. 996.
4 Song, U. and Kim, K.H. 1999. A contribution to the pollen morphology of Indigofera (Fabaceae) in Korea. Journal of Korean Forest Society 88: 213-220.
5 Ueno, J. 1978. Study of palynology, Kazama Shobo Publ. Co. Tokyo. pp. 210. (in Japanese)
6 Waha, M. 1982. Zur ultrastruktur und funktion pollenverbindender. Fden bei Angiospermen, insbesondere der Viscinfden bei Ericaceae. Ph. D. Dissertation. Univ. Vienna, Vienna. (in German)
7 Wodehouse, R.P. 1935. Pollen grains (Their structure, identification and significance in science and medicine). McGraw-Hill Com. Inc., New York, London. pp. 574.
8 Yang, B.Y. 1952. Pollen grain morphology in the Ericaceae. Quarterly Journal of the Taiwan Museum 5: 1-24.
9 Lee, H.C., 1988. Taxonomic studies on the genus Rhododendron by numerical analysis of morphological characters. Master Degree Thesis, Seoul National University, Seoul. pp. 51. (in Korean)
10 Lee, T.B. 1989. Illustrated Flora of Korea. Hyangmoon Publ. Co. Ltd., Seoul. pp. 990. (in Korean)
11 Nakai, T. 1919. Notulae ad plants Japonicae et Coreae 8. Botanical Magazine Tokyo. pp. 66.
12 Lee, Y.H. 1979. A Study on the pollen grains of Korean plants. Korean Journal of Plant Taxonomy 9: 7-25. (in Korean)   DOI
13 Lee, Y.N. 1996a. Flora of Korea. Kyohak Publ. Co. Ltd., Seoul. pp. 1237. (in Korean)
14 Lee, W.T. 1996b. Standard Illustrations of Korean Plants. Academic Publ. Co. Ltd., Seoul. pp. 624. (in Korean)
15 Nakai, T. 1952. A synoptical sketch of Korean Flora. Bulletin of the National Science Museum, 31. pp. 152.
16 Oldfield, F. 1959. The pollen morphology of some of the west European Ericales. Pollen et Spores 1: 19-48.
17 Leach, D.G. 1961. Rhododendrons of the world and how to grow them. Charkes Scribner's Sons, New York. pp. 544.
18 Kim, K.H., Nilsson, S. and Praglowski, J. 1988. A note on the pollen morphology of the Empetraceae. Grana 27: 283-290.   DOI   ScienceOn
19 Kron, K.A. 1997. Phylogentic relationships of Rhododendroideae (Ericaceae). The American Journal of Botany 84: 973-980.   DOI   ScienceOn
20 Kron, K.A. and Judd, W.S. 1990. Phylogenetic relationships within the Rhodoreae (Ericaceae) with specificcomments on the placement of Ledum. Systematic Botany 15: 57-68.   DOI   ScienceOn
21 Ikuse, M. 1956. Pollen Grain of Japan. Hirokawa Publishing Company, Tokyo. pp. 115-116.
22 Harley, M.M., Song, U. and Banks, H.I. 2005. Pollen morphology and systematics of Burseraceae. Grana 44: 282-299.   DOI   ScienceOn
23 Hwang, H.J. 1987. Interspecific relationships and cross compatibilities in the genus Rhododendron. Master Degree Thesis, Seoul National University, Seoul. pp. 54. (in Korean)
24 Hwang, H.J. 1999. Systematic study on the genus Rhododendron in Korea. Ph. D. Dissertation, Seoul National University, Seoul. pp. 140. (in Korean)
25 Jang, N.K. 1986. Illustrated flora and fauna of Korea, Vol. 29 Pollens, Ministry of Education, Korea. pp. 899. (in Korean)
26 Erdtman, G. 1952. Pollen Morphology & Plant Taxonomy: Angiosperms (An Introduction to Palynology 1). Munksgard, Copenhagen, Denmark. pp. 539.
27 Keri, C. and Zetter, R. 1992. Notes on the exine ultrastructure of Onagraceae and Rhododendroideae (Ericaceae). Grana 31: 119-123.   DOI
28 Crepet, W.L. 1996. Timing in the evolution of derived floral characters: Upper Cretaceous (Turonian) taxa with tricolpate and tricolpate-derived pollen. Review of palaeobotany and palynology 90: 339-359.   DOI   ScienceOn
29 Cronquist, A. 1981. An Integrated System of Classification of Flowering Plants. Columbia University Press.New York. pp. 1262.
30 Erdtman, G. 1969. Handbook of Palynology (An introduction to the study of pollen grains and spores). Munksgard, Copenhagen, Denmark. pp. 486.
31 Foss, P.J. 1988. A palynological study of the Irish Ericaceae and Empetrum. Pollen et Spores 30: 151-178.
32 Galle, F.C. 1995. Azaleas. Timber Press, Hong Kong. pp. 486.
33 Harley, M.M. and Daly, D.C. 1995. Burseraceae: Protieae. - World Pollen and Spore Flora 20, Scandinavian University Press, Stockholm, Oslo, Copenhagen. pp. 44.
34 Bowers, C.G. 1930. The development of pollen and viscin strands in Rhododendron catawbiense. Bulletin of the Torrey Botanical Club 57: 285-316.   DOI   ScienceOn
35 The Angiosperm Phylogeny Group. 1998. An ordinal classification for the families of flowering plants. Annals of the Missouri Botanical Garden 85: 531-553.   DOI   ScienceOn
36 The Angiosperm Phylogeny Group. 2003. An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG II. Botanical Journal of the Linnean Society 141: 399-436.   DOI   ScienceOn
37 Bailey, L.H. and Bailey, E.Z. 1978. Hortus Third. Macmillan Publishing Company, New York. pp. 949-965.
38 Chamberlain, D.F., Hyam, R., Argent, G., Fairweather, G. and Walter, K.S. 1996. The genus Rhododendron-Its classification and synonymy, Royal Botanic Garden Edinburgh (RBGE), The Alden Press, Oxford. pp. 184.
39 Chung, T.H. 1957. Korean Flora (I. Woody plants). Shinji Publ. Co. Ltd., Seoul. pp. 507. (in Korean)
40 Choo, G.C. 1987. Taxonomic studies of Genus Rhododendron in Korea. Master Degree Thesis. Kon-Kuk University, Seoul. pp. 40. (in Korean)
41 Abraham-Peskir, J.V., Searle, R. and Medenwaldt, R. 1997. A new technique of examining pollen-connecting threads. Grana 36: 343-346.   DOI   ScienceOn