title: Increased UV-B radiation reduces N2-fixation in tropical leguminous crops.
abstract: Net photosynthesis, leaf area, biomass, and number, size and activity of nodules were examined in three leguminous plants subjected under field conditions to supplemental UV-B radiation equivalent to a 15% ozone depletion at 25 degrees N latitude. Enhanced UV-B radiation adversely affected the net photosynthetic rate, growth characteristics and nodule activity in all three species. Maximum reduction in net photosynthesis occurred in Phaseolus mungo cv. Pant U-30, whereas the greatest reduction in nitrogenase activity occurred in Vigna radiata.
authors.affiliation: Department of Botany, Banaras Hindu University, Varanasi-221 005, India.
authors.forename: A
authors.initials: A
authors.lastname: Singh