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IITA Germplasm Database |
| Crop identifier | Yam | Crop type |
| IITA Accession Prefix | TDa | IITA accession prefix |
| IITA Accession Identifier | TDa-1255 | This number serves as a unique identifier for accessions and is assigned when an accession is entered into the collection. Once assigned this number should never be reassigned to another accession in the collection. Even if an accession is lost, its assigned number is never re-used. |
| Genus | Dioscorea | Genus |
| Species | alata | Species |
| Cultivar name | BE 117 | Either a registered or other formal cultivar designation given to the accesion. |
| Collection code | Collection code |
|
| Country of origin | Benin | Name of the country in which the sample was collected. |
| Singer taxonomy code | 1225 | Singer taxonomy code. |
| FAO in trust | Yes | FAO in trust |
| Listed on Annex1 | Yes | Accession is on Annex1 list |
Please contact IITA Genebank to check germplasm availability.
| ID | 262 | |
| Serial | 1255 | |
| Stem length in centimeters | 119 | Stem length in centimeters ten days after emergence. |
| Waxiness | No | Waxiness. |
| Hairiness | No | Hairiness |
| Spines | No | Spines. |
| Colored spots at the base of the spine | No | Colored spots at the base of the spine. |
| Barky patches | No | Barky patches. |
| Layering habit | No | Layering habit. |
| Twining direction | Anticlockwise (climbing to the right) | Twining direction |
| Stem height | 3 | Stem height 8 weeks after. |
| Stem number per hill | 1 | Stem number per hill (plant). |
| Internode number upto first branching | 1 | Internode number upto first branching. |
| Adult stem color | G | Adult stem color. |
| Adult stem hairiness | Dense | Adult stem hairiness. |
| Awax | 0 | |
| Striation | No | Fluted appearance e.g. longitudinal ridges. |
| Cataphylls position | Alternate | Cataphylls position. |
| Spininess | Many (entire stem) | Spininess at 8 weeks after |
| Coalescent spines | No | Coalescent spines. |
| Coloured spots at spine base | 0 | |
| Leaf type | Simple, entire, shallowly lobed | Leaf type. |
| Leatheriness | No | Leatheriness. |
| Total number of veins per leaf | 7 | Total number of veins per leaf |
| Leaf color | Green | Leaf color. |
| Upward folding of leaf along main vein | Weak | Upward folding of leaf along main vein. |
| Downward arching of leaf lobes | Downward arching of leaf lobes. |
|
| Stipules | ||
| Position of the broadest leaves | 2 | |
| Adult leaf tip | Short (<2 mm) | Adult leaf tip. |
| Adult leaf tip color | Other | Adult leaf tip color. |
| Petiole length in centimeters | Medium (5-10 cm) | Petiole length. |
| Colored spot position on petiole | Middle | Colored spot position on petiole |
| Stipules shape | 0 | Stipules shape. |
| Relationship of tubers | Completely separate but close cluster | Relationship of tubers. |
| Corm size in relation to tuber size | 1 | Corm size in relation to tuber size. |
| Corm shape | 2 | |
| Spininess of roots | No | |
| Sprouting at harvest | No | Sprouting at harvest. |
| Aerial tuber formation | No | Aerial tuber formation. |
| Skin thickness | Thin | Skin thickness. |
| Tuber shape after harvest | Irregular | Tuber shape after harvest. |
| Tuber length | 6-20 cm | Tuber length |
| Rugosity of tuber surface | Smooth | Rugosity of tuber surface. |
| Cracks on tuber surface | No | Cracks on tuber surface. |
| planting date | 23/04/2004 00:00:00 | |
| Days to emergence | 28 | Number of days between sowing and emergence. |
| Internode no | 17 | Internode number ten days after emergence. |
| Young stem colour | 4 | Assessed at 20 days after emergence |
| Adult plant type | Climbing | Adult plant type. |
| Bearing type | Thick foliage | Bearing type. |
| Field vigour of entire plant | Intermediate | Field vigour of entire plant. |
| Stem diameter | 3 | Stem diameter at 15 cm from the base of the plant. |
| Internode length | 10 | Internode length at middle level. |
| Branching | 7 | Branching at 16 weeks after. |
| Rugosity | No | Rugosity. |
| Cataphylls | Absent | Cataphylls |
| Hair type | Other | Hair type. |
| Spine shape | Curved down | Spine shape. |
| Spines length | Long | Spines length. |
| Color of spot at spine base | Maroon | Color of spot at spine base. |
| No of surv plants 4wap | 6 | |
| Number of leaves 20 days after emerging | 28 | Number of leaves 20 days after emerging. |
| Types of pigmentation | 0 | |
| Young leaf hairiness | Upper and lower surface | Young leaf hairiness of upper/lower surface. |
| Leaf arrangement | 2 | |
| Onset of leafing | Early | Onset of leafing. |
| Leaf density | Dense | Leaf density. |
| Internode number to first assimilating leaf | 2 | Internode number to first assimilating leaf. |
| Undulation of leaf margin | Many | Undulation of leaf margins. |
| Leaf shape | Cordate long | Leaf shape. |
| Lobe shape | Pointed | Lobe shape. |
| Distance between lobes | No measurable distance | Distance between lobes. |
| Leaf base shape | Obtuse | Leaf base shape. |
| Leaf length in centimeters | 12 | Leaf length in centimeters |
| Leaf width in centimeters | 11 | Leaf width in centimeters. |
| Color of spots on petiole | Purple | Color of spots on petiole. |
| Amount of leafing in october | Intermediate | Amount of leafing in october. |
| Maturity (tubers) after emergence | Intermediate (7-8 months) | Maturity (tubers) after emergence. |
| Tuber growth | Annual (Tuber renewed every year) | Tuber growth |
| Tubers per hill | One | Number of tubers per hill. |
| Skin color | Light brown | Skin color. |
| Surface texture | Smooth | Surface texture. |
| Tuber shape uniformity | Very uniform | Tuber shape uniformity. |
| Tendency of tuber to branch | Branched | Tendency of tuber to branch. |
| Place where tuber branches | Upper third part | Place where tuber branches. |
| Tuber width | 46 | Tuber width (the most greatest). |
| Rootlets on tuber surface | Some | Rootlets on tuber surface. |