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. 2021 Apr 17;253(5):106. doi: 10.1007/s00425-021-03620-5

Fig. 4.

Fig. 4

Stacked bars showing the rate of volatile emission during ageing of seeds of Agrostemma githago, Lolium perenne, and Pisum sativum under control conditions (ac), in the presence of O2 absorbers (df), in the presence of silica gel (gi), and in the presence of O2 absorbers and silica gel (jl). The overall height of the bars corresponds to the mean total volatile emission (n = 3), whilst the coloured bands represent individual volatile compounds. Volatile emission was calculated as nmol g−1 seed d−1 on a rolling basis throughout the ageing time course, in that at each ageing time point, the amounts of each volatile accumulated at the previous time point were subtracted, and the remaining amount was divided by the number of days of ageing between sampling intervals. The line plots represent mean total germination (n = 3) under each of the conditions