International Journal of Agricultural Policy and Research
Vol.5 (2), pp 26-34, February 2017
Available online at https://www.journalissues.org/IJAPR/
Article 16/ID/JPR064/09/ pages
Author(s) agree that this article remain permanently open access under the terms of the Creative Commons Attribution License 4.0 International License.
Original Research Article
Increasing the multiplication efficiency of breeder seed tuber white yam (Dioscorea rotundata Poir) clones through vine cuttings
I.I.M. Nwankwo1*, V.N. Ezebuiro1, O.K. Akinbo1, G.P. Egbo1, I.A Ikoro1, V.N. Okafor1 and O.N Eke-Okoro1
1National Root Crops Research Institute, Umudike P.M.B 7006, Umuahia, Abia State, Nigeria.
Tel.: +234806 366 8433.
The study was carried with the aim of enhancing the efficiency of the multiplication ratio of white guinea yam (Dioscorea rotundata Poir) through vine cuttings. Single 25g tuber weights were planted in each of the 20 plastic buckets in the screen house in groups of 20 per batch for the nine varieties used. Three actively growing yam plants from each of the nine varieties were tagged as mother plants for cutting vines every three months for nine months and planted singly in polybags and transplanted to the field four weeks later when the plants developed roots and shoots. Using randomized complete block design, each three months constitute a block, the nine months constituted three replicates. Data on number of vines, number and weight of tubers, tuber length, tuber diameter, were subjected to Analysis of variance. Results showed that a total of 180 yam plants from nine varieties, cloned up to 464 yam plants gave combined total tuber yield of 39,166,560 of seed tubers within one year as against the control, with one tuber at planting and one seed tuber at harvest. This indicated that vine cuttings could be used to enhance the rate of tuber multiplication for commercial seed tuber production.
Key words: white yam, vine cuttings, multiplication rate, seed tuber, commercial production