Production and distribution of virusfree yam (Dioscorea rotundata Poir.)
The international distribution of vegetative plant parts is restricted by the risks of introducing diseases and pests to non-infected areas. Methods used at IITA to produce and distribute virus-free yams to requesting national programs and collaborators are described. The selected yam clones are cle...
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| Format: | Conference Paper |
| Language: | Inglés |
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International Society for Horticultural Science
1994
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| Online Access: | https://hdl.handle.net/10568/101016 |
| _version_ | 1855521210326056960 |
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| author | Ng, S.Y.C. |
| author_browse | Ng, S.Y.C. |
| author_facet | Ng, S.Y.C. |
| author_sort | Ng, S.Y.C. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The international distribution of vegetative plant parts is restricted by the risks of introducing diseases and pests to non-infected areas. Methods used at IITA to produce and distribute virus-free yams to requesting national programs and collaborators are described. The selected yam clones are cleaned from virus disease infection through thermotherapy and meristem culture. The regenerated plants are virus indexed. The negatively indexed plants are then multiplied in vitro for international distribution. Plantlets of about 4–6 cm height grown in sterile culture media are packed for distribution by hand carriage. Node cuttings of the in vitro plantlets are also sub-cultured in a medium containing sucrose (5%) for micro-tuber production. Micro-tubers are harvested from 4–5 months old cultures and packed in sterile petri plates with sterile moist cotton wool for dispatch to national programs. Some virus-free yam plantlets are also transplanted to sterile soil in a screenhouse where they grow to maturity. Harvested tubers are used for distribution. The advantages and disadvantages of each method are discussed. |
| format | Conference Paper |
| id | CGSpace101016 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 1994 |
| publishDateRange | 1994 |
| publishDateSort | 1994 |
| publisher | International Society for Horticultural Science |
| publisherStr | International Society for Horticultural Science |
| record_format | dspace |
| spelling | CGSpace1010162024-05-15T05:11:29Z Production and distribution of virusfree yam (Dioscorea rotundata Poir.) Ng, S.Y.C. pests viruses yams harvesting The international distribution of vegetative plant parts is restricted by the risks of introducing diseases and pests to non-infected areas. Methods used at IITA to produce and distribute virus-free yams to requesting national programs and collaborators are described. The selected yam clones are cleaned from virus disease infection through thermotherapy and meristem culture. The regenerated plants are virus indexed. The negatively indexed plants are then multiplied in vitro for international distribution. Plantlets of about 4–6 cm height grown in sterile culture media are packed for distribution by hand carriage. Node cuttings of the in vitro plantlets are also sub-cultured in a medium containing sucrose (5%) for micro-tuber production. Micro-tubers are harvested from 4–5 months old cultures and packed in sterile petri plates with sterile moist cotton wool for dispatch to national programs. Some virus-free yam plantlets are also transplanted to sterile soil in a screenhouse where they grow to maturity. Harvested tubers are used for distribution. The advantages and disadvantages of each method are discussed. 1994-11 2019-04-24T12:29:44Z 2019-04-24T12:29:44Z Conference Paper https://hdl.handle.net/10568/101016 en Open Access International Society for Horticultural Science Ng, S.Y.C. (1994). Production and distribution of virus-free yam (Dioscorea rotundata Poir.). In F. Ofori and S.K. Hahn (Eds.), Tropical root crops in a developing economy: Proceedings of the 9th Symposium of the International Society for Tropical Root Crops, 20-26 October 1991, Accra, Ghana: IITA, (p. 324-328). |
| spellingShingle | pests viruses yams harvesting Ng, S.Y.C. Production and distribution of virusfree yam (Dioscorea rotundata Poir.) |
| title | Production and distribution of virusfree yam (Dioscorea rotundata Poir.) |
| title_full | Production and distribution of virusfree yam (Dioscorea rotundata Poir.) |
| title_fullStr | Production and distribution of virusfree yam (Dioscorea rotundata Poir.) |
| title_full_unstemmed | Production and distribution of virusfree yam (Dioscorea rotundata Poir.) |
| title_short | Production and distribution of virusfree yam (Dioscorea rotundata Poir.) |
| title_sort | production and distribution of virusfree yam dioscorea rotundata poir |
| topic | pests viruses yams harvesting |
| url | https://hdl.handle.net/10568/101016 |
| work_keys_str_mv | AT ngsyc productionanddistributionofvirusfreeyamdioscorearotundatapoir |