ISSN: 0041-3216

ISSN: 0041-3216 (Online), 0041-3216 (Print)
Volume 91 Number 1
Research Papers
Flowering and seed production patterns of tropical accessions of sweet potato (Ipomoea batatas (L.) Lam.). (01)
A study was carried out during the wet season of 2008 at the Potato Research Farm of the National Root Crops Research Institute, Kuru, Plateau state to explore the flowering pattern and the potential for seed-setting in ten clones of the sweet potato, TIS.2532.OP.1.13, CIPM 31, Wagabolige, E4, CIPM 3, TIS.8164, TIS.87/0087, E2, Tanzania and Ex-Igbariam, using the randomized complete block design with three replications. The results showed that the mean number of days to onset of flowering was highest in the clone CIPM 31 (102 days after planting) and lowest in the clone TIS.2532.OP.I.13 (56.67 days after planting). The mean number of flowers per plant and the rate of flowering increased with crop age and varied with clones. The highest mean number of flowers per plant was observed in the clone TIS.2532.OP.I.13. Pollen viability was highest in the clone CIPM 31 and lowest in the clone TIS.2532.OP.I.13. The mean number of capsules per plant and the seed weight per plant were highest in the clone TIS.2532.OP.i.13 and lowest in the clone CIPM 31. The study showed that the pattern of flowering and the potential of seed production in the sweet potato vary with clone. There is, therefore, prospect for improving the sweet potato through hybridization in the Jos-Plateau environment.
Keywords: Ipomoea batatas (L.) Lam, improvement, hybridization