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Fig. 9 | Plant Methods

Fig. 9

From: PYM: a new, affordable, image-based method using a Raspberry Pi to phenotype plant leaf area in a wide diversity of environments

Fig. 9

Evolution of Relative Expansion Rate (RER) of lettuce plants grown in field conditions with different light treatments as a function of projected leaf area. RER was calculated for individual plants and each time interval between two consecutive dates of image capture. Same notation as in Fig. 10. Control corresponds to full sun condition. In other treatments, plants were grown at the right vertical below a strip of joining photovoltaic panels (Below_PVPs) or between two strips of PVPs (Between_PVPs). Black arrows correspond to leaves number (approx.). a RER was computed as the local slope of the relationship between the natural logarithm of projected leaf area and thermal time. X axis represents the mean projected leaf area between 2 image captures. b Same as A with lines corresponding to the following equation: y = exp(α + β * x)

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Plant Methods

ISSN: 1746-4811