Statistical analysis
Physiological, biochemical traits and yield components were analyzed as
a completely randomized design using a two-way analysis of variance of
CO2 treatment, genotype and interaction using XLSTAT
after testing for normal distribution. Wherever appropriate, comparison
between means was performed using Tukey’s post hoc test (α = 0.05).
Principal component analysis (PCA) was performed using the FactoMineR
package using R (version 4.2.2, R Foundation for Statistical Computing)
to analyze covariation.