| dc.creator | Blaak, G.
44390,
autor.
aut | |
| dc.creator | Sterling, F.
43840. | |
| dc.description | Seedlings from natural oil palm [Elaeis guineensis] groves situated at 1-2000 m in the Bamenda Highlands of Cameroon showed precocity when planted at sea level. Samples from this germplasm were also planted in 1969 in Costa Rica. Germplasm at 1000 mwas also collected in 1977 from the Kigoma District of Tanzania. ASD de Costa Rica prepared the dura X pisifera crosses Bamenda (Ba) X Djongo (Dj), Kigoma (Ki) X Dj, DAMI Deli (Da) X Cameroon Mountain (CM) and Da X Dj, the reference treatment. These wereevaluated in a replicated progeny trial at 1000 m in Gelesha, western Ethiopia. Extreme precocity was observed in progeny 12 months after field planting for Ba X Dj (33-100%), Ki X Dj (46-74%). A lesser precocity was observed for Da X CM (22-69%), while Da X Dj-lowland-evolved plant material showed only 3% flowering palms. At 38 months after planting Da X Dj progenies showed 3.3, Ba X Dj 3.1-6.9, Ki X Dj 3.2-5.1 and Da X CM 6.9-11.1 bunches per palm. These differences were highly significant and show prospects for the breeding of oil palms suitable for high altitudes. | |
| dc.description | 1 ref. | |
| dc.description | Seedlings from natural oil palm [Elaeis guineensis] groves situated at 1-2000 m in the Bamenda Highlands of Cameroon showed precocity when planted at sea level. Samples from this germplasm were also planted in 1969 in Costa Rica. Germplasm at 1000 mwas also collected in 1977 from the Kigoma District of Tanzania. ASD de Costa Rica prepared the dura X pisifera crosses Bamenda (Ba) X Djongo (Dj), Kigoma (Ki) X Dj, DAMI Deli (Da) X Cameroon Mountain (CM) and Da X Dj, the reference treatment. These wereevaluated in a replicated progeny trial at 1000 m in Gelesha, western Ethiopia. Extreme precocity was observed in progeny 12 months after field planting for Ba X Dj (33-100%), Ki X Dj (46-74%). A lesser precocity was observed for Da X CM (22-69%), while Da X Dj-lowland-evolved plant material showed only 3% flowering palms. At 38 months after planting Da X Dj progenies showed 3.3, Ba X Dj 3.1-6.9, Ki X Dj 3.2-5.1 and Da X CM 6.9-11.1 bunches per palm. These differences were highly significant and show prospects for the breeding of oil palms suitable for high altitudes. | |
| dc.language | d | |
| dc.relation | | |
| dc.subject | Agricultura de montaña. | |
| dc.subject | Frio. | |
| dc.subject | Mejoramiento genético | |
| dc.subject | Resistencia a la temperatura. | |
| dc.subject | Zona de montaña. | |
| dc.subject | Palma de aceite | |
| dc.title | The prospects of extending oil palm cultivation to higher elevations through using cold-tolerant plant material. | |
| dc.type | text | |
