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Abstract
The performance of the mung bean cultivar Thai Green Oil was compared with the soybean cutivar Hsih-Hsih over a range of 12 plant densities from 10,000 to 800,000 plants/ha. Increasing plant density was positively related to yield and plant height and negatively related with significant reductions in flowering, yield per plant and plant branching. The higher yield potential of soybeans at high plant densities, relative to mung bean, was attributed to differences in the production of the number of flowers per plant and, subsequently, the number of pods per plant. This relationship can be applied to breeding and selecting improved mung bean cultivars.
Abstract
The effect of 12 and 16 hours of light on flowering was studied in field plot experiments with 1602 accessions of mung bean (Vigna radiata var. radiata) and 4 related species. Mung bean, adzuki bean, (V angularis (Willd.) Ohwi & Ohashi var. angularis) and moth bean (V. aconitifolia (Jacq.) Marechal) appear to have a high incidence of day-neutral types when compared with the black gram (V. mungo (L.) Hepper) and rice bean (V. umbellata (Thumb.) Ohwi & Ohaski) germplasm collections of mung bean and related species show an increase of day-neutral types of latitudes distant from the equator.