Plot and plant NDVI and their repeatability as affected by plot size. NDVI is shown in four row plots (A, B) and repeatability of NDVI in one, two, three and four row plots (C, D) of NDVIPlot
(A, C) and NDVIPlant
(B, D). Boxplots are based on mean values of the 16 genotypes. The solid line in the box indicates the median and the dotted line the mean.