1. Ahn CS, Hartmann RW (1978) Interspecific hybridization between rice bean [Vigna umbellata (Thumb.) Ohwi and Ohashi] and adzukibean [V. angularis (Willd.) Ohwi and Ohashi]. J Am Soc Hortic Sci 103:435–438
2. Baudoin JP, Marechal R (1985) Genetic diversity in Vigna. In: Singh SR, Rachie KO (eds) Cowpea research, production and utilisation. John Wiley, New York, pp 3–9
3. Baudoin JP, Marechal R (1988) Taxonomy and evolution of the genus Vigna. In: Mungbean: Proc 2nd Int Symp Asian Vegetable Res Dev Center. Shanhua, Taiwan pp 2–12
4. Dana S(1980) Genomic relationship in the genus Vigna and its implications in breeding programme. In: Gill KS (ed) Breeding methods for the improvement of pulse crops. Punjab Agric Univ, Ludhiana, pp 357–367
5. Dana S, Karmakar PG (1990) Species relation in Vigna subgenus Ceratotropis and its implications in breeding. In: Janick J (ed) Plant breeding review. Timber Press, Portland, Or., pp 19–42