1. Studies on the botanical characteristics of genus Dioscorea. V. Development of capsule, seed and embryo of Dioscorea opposita cv. Nagaimo and possibility of embryo culture;Araki;Mem. Fac. Agric. Hokkaido Univ.,1987
2. Clonal multiplication of vegetatively propagated crops through tissue culture;Oosawa;Bull. Veg. Ornamental Crops, Res. Stn.,1981
3. Bulbil formation of Dioscorea opposita cultured in vitro;Asahira;Mem. Coll. Agric. Kyoto Univ.,1979
4. Effect of nitrogen sources on shoot bud differentiation of Dioscorea deltoidea Wall. callus cultures;Singh;Biol. Plant.,1988
5. Yams;Ammirato,1980