Economic indices for clonal selection and breeding of yams
1984
Okoli, O.O. | Nwokoye, J.U. | Udugwu, C.C. (National Root Crops Research Institute, Umudike (Nigeria))
Edible yams are widely grown under mixed cropping systems in Nigeria. Sizable portions of food tubers are planted to produce new crops, the yields of which are greatly influenced by the numbers and sizes of seeds planted. Currently, yield data are not reported in such a way as to take this variation into account. Thus, we have developed a system of reporting that will enable a better comparison of results. We also have detailed other indices that make for objective selection of clones in a breeding program and, to exemplify the approach, we have used these indices and other conventional descriptors to describe cultivars belonging to two yam species.
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