Figure 3

Correlation among the morpho-physiological traits under the four production environments (CTTS, conventional tillage timely sown; CTLS, conventional tillage late sown; CATS, conservation agriculture timely sown; CALS, conservation agriculture late sown). The pair plot shows Pearson’s correlation estimates among each trait pair below the diagonal, traits on the diagonal, and proportional correlation coefficients depicted as the colour and size of circles above the diagonal. Phi2 PS II quantum yield, NPQ non-photochemical quenching, RC relative chlorophyll CTD canopy temperature depression PS1 active PS I center LT leaf thickness LA, leaf angle, DTH days to heading, DTM days to maturity, PH plant height, TC tiller count, SL spike length, SPS spikelets per spike GPS grains per spike TGW thousand-grain weight, GY grain yield, GL grain length, GB grain breadth, GSA grain surface area.