Yield traits as selection indices in seedling populations of cassava
The cassava breeding scheme currently used is long, because initial stages concentrate mainly on improving yield, with root quality selection following later. To shorten the scheme, yield and root quality should be selected simultaneously, starting at the seedling nursery. In this study, a nursery c...
| Autores principales: | , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
2010
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/44237 |
| _version_ | 1855521281575747584 |
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| author | Ojulong, HF Labuschagne, Maryke T. Herselman, L. Fregene, Martin A. |
| author_browse | Fregene, Martin A. Herselman, L. Labuschagne, Maryke T. Ojulong, HF |
| author_facet | Ojulong, HF Labuschagne, Maryke T. Herselman, L. Fregene, Martin A. |
| author_sort | Ojulong, HF |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The cassava breeding scheme currently used is long, because initial stages concentrate mainly on improving yield, with root quality selection following later. To shorten the scheme, yield and root quality should be selected simultaneously, starting at the seedling nursery. In this study, a nursery comprising of eight cassava families and 1885 seedlings developed from parents adapted to three major agro-ecologies, were evaluated for yield related traits in Colombia. Percentage dry matter content (DMC) and harvest index produced similar ranking of the parents. Tuber yield, weight, and number showed potential of increasing yield through conventional breeding. A selection index including fresh root yield, percentage DMC, root weight and roots per plant, with heavier weights being assigned to root weight and roots per plant, should be used. |
| format | Journal Article |
| id | CGSpace44237 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2010 |
| publishDateRange | 2010 |
| publishDateSort | 2010 |
| record_format | dspace |
| spelling | CGSpace442372023-02-15T05:13:17Z Yield traits as selection indices in seedling populations of cassava Ojulong, HF Labuschagne, Maryke T. Herselman, L. Fregene, Martin A. manihot eculenta roots seedlings plant breeding dry matter content raíces plántulas fitomejoramiento contenido de materia seca The cassava breeding scheme currently used is long, because initial stages concentrate mainly on improving yield, with root quality selection following later. To shorten the scheme, yield and root quality should be selected simultaneously, starting at the seedling nursery. In this study, a nursery comprising of eight cassava families and 1885 seedlings developed from parents adapted to three major agro-ecologies, were evaluated for yield related traits in Colombia. Percentage dry matter content (DMC) and harvest index produced similar ranking of the parents. Tuber yield, weight, and number showed potential of increasing yield through conventional breeding. A selection index including fresh root yield, percentage DMC, root weight and roots per plant, with heavier weights being assigned to root weight and roots per plant, should be used. 2010 2014-10-02T08:33:28Z 2014-10-02T08:33:28Z Journal Article https://hdl.handle.net/10568/44237 en Open Access |
| spellingShingle | manihot eculenta roots seedlings plant breeding dry matter content raíces plántulas fitomejoramiento contenido de materia seca Ojulong, HF Labuschagne, Maryke T. Herselman, L. Fregene, Martin A. Yield traits as selection indices in seedling populations of cassava |
| title | Yield traits as selection indices in seedling populations of cassava |
| title_full | Yield traits as selection indices in seedling populations of cassava |
| title_fullStr | Yield traits as selection indices in seedling populations of cassava |
| title_full_unstemmed | Yield traits as selection indices in seedling populations of cassava |
| title_short | Yield traits as selection indices in seedling populations of cassava |
| title_sort | yield traits as selection indices in seedling populations of cassava |
| topic | manihot eculenta roots seedlings plant breeding dry matter content raíces plántulas fitomejoramiento contenido de materia seca |
| url | https://hdl.handle.net/10568/44237 |
| work_keys_str_mv | AT ojulonghf yieldtraitsasselectionindicesinseedlingpopulationsofcassava AT labuschagnemaryket yieldtraitsasselectionindicesinseedlingpopulationsofcassava AT herselmanl yieldtraitsasselectionindicesinseedlingpopulationsofcassava AT fregenemartina yieldtraitsasselectionindicesinseedlingpopulationsofcassava |