Karyotype analysis of Rheum palmatum

Rheum palmatum, one of the source plants of the traditional Chinese medicine rhubarb, is anendemic and endangered species. To our knowledge, this is the first report on the chromosome number and karyotype of this species. Sectioning combined with micrography was used to analyze the karyotype. The fo...

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Bibliographic Details
Published in:Genetics and molecular research 2014-10, Vol.13 (4), p.9056-9061
Main Authors: Ye, J Q, Jia, Y Y, Fan, K, Sun, X J, Wang, X M
Format: Article
Language:English
Subjects:
Chromosomes, Plant - genetics
Endangered Species
Karyotype
Karyotyping - methods
Medicine, Chinese Traditional
Plants, Medicinal - genetics
Rheum
Rheum - genetics
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Summary:Rheum palmatum, one of the source plants of the traditional Chinese medicine rhubarb, is anendemic and endangered species. To our knowledge, this is the first report on the chromosome number and karyotype of this species. Sectioning combined with micrography was used to analyze the karyotype. The following results were obtained: R. palmatum had a stable chromosome number 2n = 22; the basic number of chromosomes was 11; karyotype formula is 2n = 22 = 20 metacentric + 2 submetacentric, belonging to Stebbins' 1A type; and karyotype asymmetry index was 55.39%. The present study showed that R. palmatum has a primitive type of karyotype.
ISSN:1676-5680
1676-5680
DOI:10.4238/2014.October.31.20