Assessment of genetic diversity among African cassava Manihot esculenta Crantz accessions resistant to the cassava mosaic virus disease using SSR markers
A study was conducted to determine the extent of genetic diversity among African cassava (<em>Manihot esculenta</em> Crantz) accessions resistant to the cassava mosaic virus disease (CMD), using simple sequence repeat (SSR) markers. The accessions included a breeding stock (clone 58308), five improv...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Springer
2006
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/43200 |
| _version_ | 1855533659779497984 |
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| author | Lokko, Y Dixon, Alfred G.O. Offei, S. Danquah, E.Y. Fregene, Martin A. |
| author_browse | Danquah, E.Y. Dixon, Alfred G.O. Fregene, Martin A. Lokko, Y Offei, S. |
| author_facet | Lokko, Y Dixon, Alfred G.O. Offei, S. Danquah, E.Y. Fregene, Martin A. |
| author_sort | Lokko, Y |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | A study was conducted to determine the extent of genetic diversity among African cassava (<em>Manihot esculenta</em> Crantz) accessions resistant to the cassava mosaic virus disease (CMD), using simple sequence repeat (SSR) markers. The accessions included a breeding stock (clone 58308), five improved lines, 62 CMD resistant and 10 CMD susceptible landraces. Genetic diversity was assessed among accessions in five cluster groups derived from UPGMA analysis on data from 18 SSR primer pairs. Average gene diversity, He, was high in all cluster groups, with an average heterozygosity of 0.591 ± 0.061. The estimator of inbreeding Fis revealed a low level of inbreeding within groups and averaged -0.262 ± 0.142. Gene diversity among all accessions was 51.4% and gene diversity within cluster groups was 46.6%, while 4.8% was due to diversity between the different cluster groups. The amount of genetic differentiation measured by Gst and Fst were 9.6% and 12.1% respectively, indicating a weak genetic structure. |
| format | Journal Article |
| id | CGSpace43200 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2006 |
| publishDateRange | 2006 |
| publishDateSort | 2006 |
| publisher | Springer |
| publisherStr | Springer |
| record_format | dspace |
| spelling | CGSpace432002024-08-27T10:36:41Z Assessment of genetic diversity among African cassava Manihot esculenta Crantz accessions resistant to the cassava mosaic virus disease using SSR markers Lokko, Y Dixon, Alfred G.O. Offei, S. Danquah, E.Y. Fregene, Martin A. manihot esculenta genetic variation genetic resistance african cassava mosaic virus variación genética resistencia genética virus del mosaico de la yuca sources of resistance simple sequence repeat cluster groups east african cassava mosaic virus A study was conducted to determine the extent of genetic diversity among African cassava (<em>Manihot esculenta</em> Crantz) accessions resistant to the cassava mosaic virus disease (CMD), using simple sequence repeat (SSR) markers. The accessions included a breeding stock (clone 58308), five improved lines, 62 CMD resistant and 10 CMD susceptible landraces. Genetic diversity was assessed among accessions in five cluster groups derived from UPGMA analysis on data from 18 SSR primer pairs. Average gene diversity, He, was high in all cluster groups, with an average heterozygosity of 0.591 ± 0.061. The estimator of inbreeding Fis revealed a low level of inbreeding within groups and averaged -0.262 ± 0.142. Gene diversity among all accessions was 51.4% and gene diversity within cluster groups was 46.6%, while 4.8% was due to diversity between the different cluster groups. The amount of genetic differentiation measured by Gst and Fst were 9.6% and 12.1% respectively, indicating a weak genetic structure. 2006-11 2014-09-24T08:41:46Z 2014-09-24T08:41:46Z Journal Article https://hdl.handle.net/10568/43200 en Limited Access Springer Lokko, Y., Dixon, A., Offei, S. et al. Assessment of genetic diversity among African cassava Manihot esculenta Grantz accessions resistant to the cassava mosaic virus disease using SSR markers. Genet Resour Crop Evol 53, 1441–1453 (2006). https://doi.org/10.1007/s10722-005-6841-x |
| spellingShingle | manihot esculenta genetic variation genetic resistance african cassava mosaic virus variación genética resistencia genética virus del mosaico de la yuca sources of resistance simple sequence repeat cluster groups east african cassava mosaic virus Lokko, Y Dixon, Alfred G.O. Offei, S. Danquah, E.Y. Fregene, Martin A. Assessment of genetic diversity among African cassava Manihot esculenta Crantz accessions resistant to the cassava mosaic virus disease using SSR markers |
| title | Assessment of genetic diversity among African cassava Manihot esculenta Crantz accessions resistant to the cassava mosaic virus disease using SSR markers |
| title_full | Assessment of genetic diversity among African cassava Manihot esculenta Crantz accessions resistant to the cassava mosaic virus disease using SSR markers |
| title_fullStr | Assessment of genetic diversity among African cassava Manihot esculenta Crantz accessions resistant to the cassava mosaic virus disease using SSR markers |
| title_full_unstemmed | Assessment of genetic diversity among African cassava Manihot esculenta Crantz accessions resistant to the cassava mosaic virus disease using SSR markers |
| title_short | Assessment of genetic diversity among African cassava Manihot esculenta Crantz accessions resistant to the cassava mosaic virus disease using SSR markers |
| title_sort | assessment of genetic diversity among african cassava manihot esculenta crantz accessions resistant to the cassava mosaic virus disease using ssr markers |
| topic | manihot esculenta genetic variation genetic resistance african cassava mosaic virus variación genética resistencia genética virus del mosaico de la yuca sources of resistance simple sequence repeat cluster groups east african cassava mosaic virus |
| url | https://hdl.handle.net/10568/43200 |
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