AFLP analysis of relationships among cassava and other Manihot species
Despite the worldwide importance of cultivated cassava (M. esculenta Crantz) its origin and taxonomic relationships with other species in the genus have not been clearly established. We evaluated a representative sample of the crop’s diversity and six wild taxa with AFLPs to estimate genetic relatio...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
1997
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/42555 |
| _version_ | 1855513354637934592 |
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| author | Roa, A.C. Maya, M.M. Duque E., Myriam Cristina Tohme, Joseph M. Allem, A.C. Bonierbale, Merideth W. |
| author_browse | Allem, A.C. Bonierbale, Merideth W. Duque E., Myriam Cristina Maya, M.M. Roa, A.C. Tohme, Joseph M. |
| author_facet | Roa, A.C. Maya, M.M. Duque E., Myriam Cristina Tohme, Joseph M. Allem, A.C. Bonierbale, Merideth W. |
| author_sort | Roa, A.C. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Despite the worldwide importance of cultivated cassava (M. esculenta Crantz) its origin and taxonomic relationships with other species in the genus have not been clearly established. We evaluated a representative sample of the crop’s diversity and six wild taxa with AFLPs to estimate genetic relationships within the genus. Groupings of accessions of each species by data analysis corresponded largely with their previous taxonomic classifications. A mixed group, consisting of Manihot esculenta subsp. flabellifolia and M. esculenta subsp. peruviana, was most similar to cassava, while M. aesculifolia, M. brachyloba, and M. carthaginensis were more distant. Species-specific markers, which may be useful in germ-plasm classification or introgression studies, were suggested by the unique presence of AFLP products in samples of each of the three wild species. Heterogeneity of similarities among individuals of certain species suggested the existence of intraspecific gene pools, a hypothesis that was supported by morphological or ecogeographic evidence with varying degrees of success. Quantitative assessment of genetic diversity revealed greater homogeneity among cassava accessions than among itsclosest wild relatives. The demonstration of unique genetic diversity in the two M. esculenta subspecies and their genetic similarity to the crop supports the hypothesis that these materials may be the ancestors of cassava. |
| format | Journal Article |
| id | CGSpace42555 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 1997 |
| publishDateRange | 1997 |
| publishDateSort | 1997 |
| record_format | dspace |
| spelling | CGSpace425552025-11-12T05:52:51Z AFLP analysis of relationships among cassava and other Manihot species Roa, A.C. Maya, M.M. Duque E., Myriam Cristina Tohme, Joseph M. Allem, A.C. Bonierbale, Merideth W. manihot esculenta genetic variation biotechnology plant anatomy electrophoresis germplasm variación genética biotecnología anatomía de la planta electroforesis germoplasma Despite the worldwide importance of cultivated cassava (M. esculenta Crantz) its origin and taxonomic relationships with other species in the genus have not been clearly established. We evaluated a representative sample of the crop’s diversity and six wild taxa with AFLPs to estimate genetic relationships within the genus. Groupings of accessions of each species by data analysis corresponded largely with their previous taxonomic classifications. A mixed group, consisting of Manihot esculenta subsp. flabellifolia and M. esculenta subsp. peruviana, was most similar to cassava, while M. aesculifolia, M. brachyloba, and M. carthaginensis were more distant. Species-specific markers, which may be useful in germ-plasm classification or introgression studies, were suggested by the unique presence of AFLP products in samples of each of the three wild species. Heterogeneity of similarities among individuals of certain species suggested the existence of intraspecific gene pools, a hypothesis that was supported by morphological or ecogeographic evidence with varying degrees of success. Quantitative assessment of genetic diversity revealed greater homogeneity among cassava accessions than among itsclosest wild relatives. The demonstration of unique genetic diversity in the two M. esculenta subspecies and their genetic similarity to the crop supports the hypothesis that these materials may be the ancestors of cassava. 1997 2014-09-24T07:58:11Z 2014-09-24T07:58:11Z Journal Article https://hdl.handle.net/10568/42555 en Open Access application/pdf |
| spellingShingle | manihot esculenta genetic variation biotechnology plant anatomy electrophoresis germplasm variación genética biotecnología anatomía de la planta electroforesis germoplasma Roa, A.C. Maya, M.M. Duque E., Myriam Cristina Tohme, Joseph M. Allem, A.C. Bonierbale, Merideth W. AFLP analysis of relationships among cassava and other Manihot species |
| title | AFLP analysis of relationships among cassava and other Manihot species |
| title_full | AFLP analysis of relationships among cassava and other Manihot species |
| title_fullStr | AFLP analysis of relationships among cassava and other Manihot species |
| title_full_unstemmed | AFLP analysis of relationships among cassava and other Manihot species |
| title_short | AFLP analysis of relationships among cassava and other Manihot species |
| title_sort | aflp analysis of relationships among cassava and other manihot species |
| topic | manihot esculenta genetic variation biotechnology plant anatomy electrophoresis germplasm variación genética biotecnología anatomía de la planta electroforesis germoplasma |
| url | https://hdl.handle.net/10568/42555 |
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