Fig. 2

Biomass, plant height, fruit weights, and perimeters of the tomatoes for the control and leakage treatments (CO₂ leakage during the tomato growth period). (a) Above- and underground biomass of tomato. The indicators shown are aboveground biomass under control treatment (Above_Control), aboveground biomass under leakage treatment (Above_leakage), underground biomass under control treatment (Under_Control), and underground biomass under leakage treatment (Under_ leakage). The vertical line in each box is the median value, and the box graph is drawn using the quartile method. (b) Tomato plant heights. (c) Weight of a single fruit and (d) the largest fruit perimeter per plant (mm). The horizontal line in each box is the median value, and the box graphs were drawn using the quartile method. CK is the control (no CO₂ leakage); the leakage group is the experimental group where CO₂ leakage occurred throughout the growth period, with a leakage amount of 1500 g m⁻²d⁻¹. All groups were subjected to the same water and heat conditions.