Nitrogen Fixation and Delayed Leaf Senescence in Soybeans

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Science  03 Mar 1978:
Vol. 199, Issue 4332, pp. 973-975
DOI: 10.1126/science.199.4332.973


Delayed leaf senescence has been found in a soybean population which maintains its chlorophyll and ribulosebisphosphate carboxylase activity in leaves and nitrogen fixation (acetylene reduction) activity in root nodules throughout seed maturation. Incorporation of delayed leaf senescence into an agronomically desirable genetic background may help to increase seed yield and symbiotic nitrogen fixation during seed development.