“Complement fractionation” in natural diploid orchid species

Teoh, S.B. (1982) “Complement fractionation” in natural diploid orchid species. Theoretical and Applied Genetics, 61 (1). pp. 91-96. ISSN 0040-5752, DOI https://doi.org/10.1007/BF00261517.

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Official URL: https://doi.org/10.1007/BF00261517


Four out of 10 diploid orchid species showed “complement fractionation” a complex cytological phenomenon, hitherto reported only in polyploid plants. The manifestation of this phenomenon during meiosis is the formation of chromosome subgroups resulting eventually in cells with more than the usual four sporads; five or six being the optimum number in the investigated orchid species. No implications whatsoever can be deduced as to the genetic or genomic constitution of the end products. The presence of the phenomenon in these orchid species could perhaps indicate a polyploid ancestry or concealed hybridity. The operation of “complement fractionation”, however, could be interpreted as an alternative evolutionary pathway opposed to polyploidy.

Item Type: Article
Additional Information: Teoh, S.B. Department of Genetics and Cellular Biology, University of Malaya, Kuala Lumpur, Malaysia.
Uncontrolled Keywords: Complement fractionation; Excess sporads; Diploid orchid species; Phaius tribe Evolution
Subjects: Q Science > Q Science (General)
Q Science > QC Physics
R Medicine
Divisions: Faculty of Science > Institute of Biological Sciences
Depositing User: Mr. Faizal Hamzah
Date Deposited: 28 Nov 2013 01:46
Last Modified: 26 Feb 2019 06:30
URI: http://eprints.um.edu.my/id/eprint/8575

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