Abstract
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.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 6
Claim · model-written summary
Rheum palmatum had a stable chromosome number of 2n = 22.
- Taxon
- Rheum palmatum
Rheum palmatumt0 - Outcome
- chromosome numbere0
- Value
- 2n = 22e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“R. palmatum had a stable chromosome number 2n = 22”
t0“Rheum palmatum”
Claim · model-written summary
Its basic chromosome number was 11.
- Taxon
- Rheum palmatumRheum palmatumt0
- Outcome
- basic number of chromosomese0
- Value
- 11e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the basic number of chromosomes was 11”
t0“Rheum palmatum”
Claim · model-written summary
Its karyotype included 20 metacentric and 2 submetacentric chromosomes.
- Taxon
- Rheum palmatumRheum palmatumt0
- Outcome
- karyotype formulae0
- Value
- 2n = 22 = 20 metacentric + 2 submetacentrice0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“karyotype formula is 2n = 22 = 20 metacentric + 2 submetacentric”
t0“Rheum palmatum”
Claim · model-written summary
Its karyotype belongs to Stebbins 1A type.
- Taxon
- Rheum palmatumRheum palmatumt0
- Outcome
- Stebbins' 1A typee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“belonging to Stebbins' 1A type”
t0“Rheum palmatum”
Claim · model-written summary
Its karyotype asymmetry index was 55.39%.
- Taxon
- Rheum palmatumRheum palmatumt0
- Outcome
- karyotype asymmetry indexe0
- Value
- 55.39%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“karyotype asymmetry index was 55.39%”
t0“Rheum palmatum”
Claim · model-written summary
The authors classified the karyotype as primitive.
- Taxon
- Rheum palmatumRheum palmatumt0
- Outcome
- primitive type of karyotypee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“R. palmatum has a primitive type of karyotype”
t0“Rheum palmatum”