Producing seed yams (Dioscorea rotundata) from sprouts

Pages 297-299

B.A. Aighewi, R. Asiedu and M.O. Akoroda

ABSTRACT

Obtaining seed yams in sufficient quantity and quality is a persistent problem in production of white yam (Dioscorea rotundata Poir.), especially for beginning yam farmers and researchers. Conventionally, the tuber is the only means of propagation for white yam and it is very expensive. Yam sprouts which are normally cut off from tubers in storage and discarded were evaluated as an alternative means for producing seed yams. The critical period for plant survival was 4-6 weeks after planting (WAP)  In 1994, 3.2% of sprouts from local variety Pepa established and survived until harvest, compared to 32.3% from local variety Abi. In 1995, 56.7% of sprouts from Pepa established and survived till harvest. Mean tuber weight for Pepa was 1808.0 ± 255.1 g and 522.8 ± 30.3 g in 1994 and 1995, respectively, while that for Abi was 277.4 ± 20.7 g in 1994. In 1994, 71.4% of Pepa plants produced tubers weighing 1 kg or more.

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