Abstract
Reported in this paper is a karyomorphological study on one natural population of each of eight varieties in theSpiraea japonica complex. The interphase and mitotic prophase can be classified into the simple chromocenter type and the proximal type, respectively. The metaphase karyotypes of the eight varieties were formulated as follows:S. japonica var.japonica: 2n=18=14m+2sm+2st;S. japonica var.acuta: 2n=18=11m+4sm+3st;S. japonica var.incisa: 2n=18=12m+4sm+2st;S. japonica var.stellaris: 2n=18=15m+1sm+2st;S. japonica var.acuminata: 2n=18=14m+2sm+2st;S. japonica var.ovalifolia: 2n=18=10m+2sm+2st+4t;S. japonica var.glabra: 2n=18=10m+4sm+4st;S. japonica var.fortunei: 2n=36=17m+16sm+3st. Karyomorphological study reveals that the chromosome numbers within the complex are stable, and that karyomorphological divergence between the varieties lies mainly in chromosome size and organization. Based on the karyomorphological data and geographical distribution of the complex, the differentiation pattern as well as evolutionary mechanism of the complex is evaluated.
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Literature Cited
Grant, V. 1981. Plant speciation. Columbia University Press, New York.
Hao, X. J., J. L. Nie, H. Sun &S. J. Gu 1997. The chemotaxonomy ofSpiraea japonica complex. Acta Botanica Yunnanica 19: 297–303.
Jones, K. 1978. Aspects of chromosome evolution in higher plants. Adv. Bot. Res. 6: 159–194.
Levan, A., K. Fedga &A. A. Sandberg. 1964. Nomenclature for centromeric position on chromosomes. Hereditas 52: 201–220.
Levitzky, G. A. 1931. The karyotype in systematics. Bull. Appl. Bot. Genet. Pl. Breed. 27: 220–240.
Lu, L. T. 1996. The evolution and distribution of subfam. Spiraeoideae (Rosaceae) of China, with special reference to distribution of the subfamily in the world. Acta Phytotaxonomica Sinica 34: 361–375.
Qiu, J. Z. &Hong De-Yuan. 1993. A biosystematic study onAdenophora gmelinii complex (Campanulaceae). Acta Phytotaxonomica Sinica 31: 17–41.
Rehder, A. 1913. Plantae wilsonianae. Publ. Arnold Arbor. 4(1): 1–611.
Sax, K. 1936. Polyploidy and geographic distribution inSpiraea. J. Arnold Arb. 17: 352–356.
Sharma, A. K. 1970. Annual report, 1967–1968. Res. Bull. Univ. Calcutta (Cytogenet. Lab.) 2: 1–50.
Stebbins, G. L. 1971. Chromosomal evolution in higher plants. Edward Arnold, London.
Tanaka, R. 1971. Types of resting nuclei in Orchidaceae. Bot. Mag. Tokyo 84: 118–122.
Wu, C. Y. 1984. Index florae Yunnanensis, tomus 1, People's Publishing House, Yunnan, China: 543.
Yu, T. T. 1974. Flora Reipublicae Popularis Sinicae. Science Press, Beijing, Tomus 36: 12–14.
Zohary, D. 1965. Colonizer species in the wheat group. Pages 404–423.In: H. G. Baker & L. G. Stebbins, editors.) The genetics of colonizing species. Academic Press, New York.
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Zhao-Yang, Z., Hang, S. & Zhi-Jian, G. Karyomorphological study of the Spiraea japonica complex (Rosaceae). Brittonia 54, 168–174 (2002). https://doi.org/10.1663/0007-196X(2002)054[0168:KSOTSJ]2.0.CO;2
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DOI: https://doi.org/10.1663/0007-196X(2002)054[0168:KSOTSJ]2.0.CO;2