Comparison of the cortex and cavity measurements between the Gmsacpd-c mutants and the cv Forrest wild type (F-WT). A, Nodule horizontal outer diameter. B, Nodule vertical outer diameter. C, Nodule horizontal inner diameter. D, Nodule vertical inner diameter. E, Biometric measures of the nodule coat size using the formula (HO − HI) + (VO − VI)/2. F, Dissecting light microscope image of a hand-sectioned nodule from the cv Forrest wild type showing details of horizontal outer (HO), horizontal inner (HI), vertical outer (VO), and vertical inner (VI). Numbers are as follows: F605 (n = 21), F620 (n = 22), F714 (n = 20), F813 (n = 25), and wild type (n = 20).