Fonseka, H.D.Fonseka, R.M.Asanuma, K.2020-09-022020-09-022000-2001Tropical Agriculturist, 153:p.1-13https://dl-doa.nsf.gov.lk/handle/1/2634AgricultureVigna unguiculataGenotypesInter cellular CO2 concentrationNet photosynthesisStomatal resistanceTranspiration efficiencyPlant physiologyGas exhangeSeed yieldGenotypic variability in gas exchange characteristics at four critical growth stages of field-grown cowpea (Vigna unguiculata (L)Walp.)Article