| Autor: |
Cheng Liu, Guang-Rong Li, Sehgal, Sunish, Ju-Qing Jia, Zu-Jun Yang, Friebe, Bernd, Gill, Bikram |
| Předmět: |
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| Zdroj: |
Plant Systematics & Evolution; Sep2010, Vol. 288 Issue 3/4, p149-156, 8p, 1 Color Photograph, 2 Diagrams |
| Abstrakt: |
The genus Dasypyrum (or Haynaldia) consists of two species, D. villosum and D. breviaristatum. However, the genomic relationships between these two species remain unclear. The objective of this study was to provide molecular phylogenic and cytological evidence on the evolutionary relationships of the genus Dasypyrum. Sequences of Chloroplast DNA (cpDNA) and α-gliadin genes both support the hypothesis that diploid D. breviaristatum is the progenitor of tetraploid D. breviaristatum, and the diploid D. villosum and D. breviaristatum evolved parallel from an ancestral species. Genomic and fluorescence in situ hybridization using ribosomal DNA and rye repetitive DNA sequence as probes also indicated that tetraploid D. breviaristatum originated from diploid D. breviaristatum. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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