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Abstract
Interspecific hybridization between Vigna radiata and V. angularis is reported for the first time. Two hybrids developed from embryos which were excised from immature seeds of V. radiata and cultured on artificial medium. The plants flowered early and continuously until death. No seeds were produced. Mean pairing at metaphase I was 2.39II + 17.22I (2n = 22).
Abstract
Interspecific hybridization between Vigna umbellata and V. angularis is reported for the first time. Hybrids were obtained from immature embryos cultured on artificial medium. The hybrids showed normal meiosis (11II) and fertility only slightly reduced from that of the parental species. Viable seeds were produced by self-pollination and by backcrosses to both parents. It appears that these species are closely related and gene transfers in both directions should be possible once embryo abortion is overcome by embryo culture.
Abstract
The mungbean [Vigna radiata (L.) Wilczek] is an important short-duration annual grain legume. Mungbean is grown principally for its edible dry seeds, which are high in protein, easily digested, and prepared in numerous forms for human consumption; e.g., as a green vegetable and for sprouts. Other attributes of the crop include drought tolerance, high lysine content as compared to cereal grains, low production of flatulence, and wide adaptability. Commercial production occurs throughout Asia, Australia, the West Indies, South America, and tropical and subtropical Africa. In North America, production is centered in northern Texas and Oklahoma. Annual world mungbean production is estimated at 1.4 million t harvested from ≈3.4 million ha (1). In the United States >50 million kg of bean sprouts are produced annually from 8.3 million kg of mungbean seeds (4).