Publication Date
1997
Description
Thirty-three Stylosanthes accessions, which are all considered to be S. sp. aff. S. scabra, were analysed using STS and RAPD as genetic markers. These accessions were readily clustered into two major groups based on dissimilarity values, with 28 accessions in one group (A) and the other five in the other (B). STS analysis indicated that accessions in group A are diploid S. sp. aff. S. scabra but those in B are tetraploids, likely to be S. scabra or its closely related taxa. Cytological examination of root-tip cells confirmed that the five accessions in group B are all tetraploids. Genetic dissimilarity among the 28 accessions in group A was 0.094, that among the five accessions in group B was 0.137, and that between the two groups was 0.549. The taxonomic status of S. sp. aff. S. was discussed.
Citation
Liu, C J., "Verification of and Genetic Variation Between Stylosanthes sp. Aff. S. Scabra Accessions" (2024). IGC Proceedings (1997-2023). 41.
https://uknowledge.uky.edu/igc/1997/session11/41
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Verification of and Genetic Variation Between Stylosanthes sp. Aff. S. Scabra Accessions
Thirty-three Stylosanthes accessions, which are all considered to be S. sp. aff. S. scabra, were analysed using STS and RAPD as genetic markers. These accessions were readily clustered into two major groups based on dissimilarity values, with 28 accessions in one group (A) and the other five in the other (B). STS analysis indicated that accessions in group A are diploid S. sp. aff. S. scabra but those in B are tetraploids, likely to be S. scabra or its closely related taxa. Cytological examination of root-tip cells confirmed that the five accessions in group B are all tetraploids. Genetic dissimilarity among the 28 accessions in group A was 0.094, that among the five accessions in group B was 0.137, and that between the two groups was 0.549. The taxonomic status of S. sp. aff. S. was discussed.
