Net photosynthesis of Feefficient and Feinefficient soybean cultivars grown under varying iron levels Academic Article uri icon


  • Net photosynthesis (P), chlorophyll, and foliar Fe content of two Fe-efficient (A? and Hawkeye) and two Fe-inefficient (T203 and Anoka) soybean cultivars (Glycine max (L.) Merr.) were measured at seven different Fe levels in modified Hoagland solution culture. Net photosynthesis of A7 remained relatively high with or without Fe even after 10 days, while that of T203 was low without Fe, increased with increasing Fe up to about 0.3 mg Fe/liter, and leveled off thereafter. Hawkeye P was low at 0 mg Fe/liter increased dramatically with as littie as 0.1 mg Fe/liter, and was unchanged thereafter. Anoka P rose gradually between 0 and 0.6 mg Fe/liter after which it leveled off. Thus, rates of P for Fe-efficient and-inefficient cultivars were similar at the higher Fe levels, but were very different under Fe-stressed conditions. Changes in P n in all cultivars were generally paralleled by similar changes in chlorophyll and foliar Fe content. Stomatal diffusive resistance was unaffected by the Fe treatments. 1986, Taylor & Francis Group, LLC. All rights reserved.

published proceedings

  • Journal of Plant Nutrition

author list (cited authors)

  • Davis, T. D., Jolley, V. D., Valser, R. H., Brown, J. C., & Blaylock, A. D.

citation count

  • 18

complete list of authors

  • Davis, TD||Jolley, VD||Valser, RH||Brown, JC||Blaylock, AD

publication date

  • January 1986