ISSN: 0041-3216 (Online), 0041-3216 (Print)
Volume 72 Number 2
Diosgenin variability in plants propagated from male and female lines of Dioscorea floribunda Mart. & Gal.
Two homogeneous lines of male and female medicinal yam (Dioscorea floribunda Mart. & Gal.) were grown in experimental plots, to evaluate differences in biomass and yields of tuber and diosgenin. Plants originating vegetatively from female lines had a significantly higher yield of foliage and weight of fresh tuber per plant, yield of dry tuber (60%), and diosgenin per hectare (83%) than from male plants. The highest quality of diosgenin (4.22% of dry weight) in tuber was obtained from the median portion which was 70 and 101% higher than diosgenin in the tip and crown portions, respectively.
Keywords: Homogeneous line; Dioscorea; Tuber; Diosgenin; Yield