High-Yielding and Acceptable Tugui (Dioscorea esculenta) Accessions for the Ilocos

Noralyn  B. Legaspi,; Beatriz  S. Malab,

High-Yielding and Acceptable Tugui (Dioscorea esculenta) Accessions for the Ilocos

Abstract:

Yam or tugui (Dioscorea esculenta) is a cash crop grown by Ilocos farmers in sloping and marginal areas. However, productivity is limited to about 2.6 t ha-1 –3.3 t ha-1 only due to the absence of a recommended high-yielding variety. To respond to this need, several experiments were conducted to identify promising accessions that could be recommended to farmers. After three years of evaluation both on-station and on-farm, six accessions (# 9, 3, 2, 1, 4, and 15) were found promising, with mean yields ranging from 13.33 t ha-1 to 14.54 t ha-1 , which is equivalent to an ROI of at least 1.63. These accessions are also highly acceptable to consumers. With the promising accessions, planting of tugui can now become a more productive farming endeavor. With these, the marginal and/or idle lands can be made productive and be used to support the government’s program on food security.

References:

Akoda, M.O. (1998). Genetic selection in food yams: a century of sporadic efforts cited in P. Vernier and A. Dansi . 2008. In: Participatory assessment of local yam cultivars in Benin. Plant Genetic Resources Newsletter. 147:38-46.
COMMUNITY BIODIVERSITY DEVELOPMENT AND CONSERVATION PROGRAMME-BOHOL PROJECT. (2001). Crop Genetic Resources Enhancement of Yam (Dioscorea alata) in Four Towns in Bohol, Philippines. Technical Report No. 7. Southeast Asia Regional Institute for Community Education. Quezon City, Philippines.
Lebot, V. et al. (2005). Physico-chemical characterization of yam (Dioscorea alata L) tubers from Vanuatu. Genetic Resources and Crop Evolution. 00:1-10.