Genotypic differences in the growth of Triticum aestivum in relation to absorbed solar radiation

During the 1981–1982 growing season, five winter-wheat cultivars, chosen for known differences in leaf posture, were grown. Light-attenuation coefficients (K) for the five cultivars as an average value prior to canopy senescence, were: ‘Hedgehog’ (0.28), ‘Huntsman’ (0.33), ‘Stetson’ (0.37), ‘Armada’ (0.42) and ‘Score’ (0.44). While different cultivars absorbed similar amounts of solar radiation, the efficiency by which absorbed radiation was...