Nutrition of a Developing Legume Fruit: Functional Economy in Terms of Carbon, Nitrogen, Water 1

AUTOR(ES)

Pate, John S.

RESUMO

The economy of functioning of the developing fruit of white lupin (Lupinus albus L.) is assessed quantitatively in relation to intake and usage of carbon, nitrogen, and water. Of every 100 units of carbon imported from the parent plant, 52 are incorporated into seeds, 37 into nonmobilizable material of the pod, and the remaining 11 lost as CO2 to the atmosphere. An illuminated fruit can make net gains of CO2 from the atmosphere during the photoperiods of all but the last 2 weeks of its life, suggesting that it is active in assimilation of CO2 respired from pods and seeds. This conservation activity is important to carbon economy.

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