Figure 4.

Enzyme activities of ACO, ACS, and MTN during different tomato fruit development stages. A, In vitro ACO enzyme activity (nmol h⁻¹ mg protein⁻¹); B, in vitro ACS enzyme activity (nmol h⁻¹ mg protein⁻¹); and C, in vitro MTN enzyme activity (nmol h⁻¹ mg protein⁻¹) during tomato fruit development, ripening, and postharvest storage. Error bars represent the sd of the mean of 10 biological replicates. See Figure 2 for maturity stage annotations.