Significance of Photosynthetic and Respiratory Exchanges in the Carbon Economy of the Developing Pea Fruit

Abstract

The nutritional economy of the developing fruit of Pisum sativum L. (cv. Greenfeast) was studied in terms of intake of translocate, incorporation of C and N into dry matter, transpiration, and CO₂ exchanges of the fruit with its external and internal atmospheres. The environmental conditions were 12-hr days (22 C, 850 μeinsteins m⁻² sec⁻¹ at fruit level); 12-hr nights of 15 C.