| Summary: | Bibliography: leaves 126-152. === Reduction in ozone layer thickness in the stratosphere and the resultant increase in ground level of biologically active ultraviolet-B (UV-B) radiation prompted research into the effect of UV-B on growth and metabolism of terrestrial plants. In this study, eight legume species including three tropical food grain legumes [Vigna unguiculata (L.) Walp. (cowpea), Glycine max (L.) Merr (soybean), and Phaseolus vulgaris (L.) (common bean)], two temperate pasture legumes [Lupinus luteus (lupin) and Vicia atropurpurea (vetch)], a tree [Virgilia oroboides (Bergius T.M. Salter] and two shrub legumes [Cyclopia maculata (L.) Vent (honey bush) and Podalyria calyptrata Willd] indigenous to Southern Africa were exposed to UV-B radiation at above and below-ambient levels, and assessed for its effects on plant growth, symbiotic function and root concentration of metabolites.
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