The relationships between chloroplast size and the ratio of mesophyll conductance (g<sub>m</sub>) to Rubisco content on Shanyou 63 (solid cycles) and Yangdao 6 (open cycles).
<p>Chloroplast surface area (S<sub>chl</sub>) and volume (V<sub>chl</sub>) were calculated from the Cesaro formula. The lines represent the following regressions: (a) y = 2.54x/(x−1.98) R<sup>2</sup> = 0.63 <i>P</i> > 0.05; (b) y = 2.99x/(x−0.73) R<sup>2</sup> = 0.88 <i>P</i><0.01; (c) y = 3.72x/(x−1.91) R<sup>2</sup> = 0.89 <i>P</i><0.01; (d) y = 1.15x+2.06 R<sup>2</sup> = 0.82 <i>P</i><0.05.</p
