Seed germination modeling of wild mustard (Sinapis arvensis L.) as affected by temperature and water potential: hydrothermal time model
In this research, seed germination modeling of wild mustard was conducted satisfactory. Beta function was used to describe seed germination rate to temperature. Base temperature was -2.9 oC and it was increased with decreasing water potential to about 2 oC in -0.6 MPa. The R2 values were 0.86 in sub-optimal temperatures, and this value for supra-optimal temperatures was 0.94. The R2 values showed a good fitness of the hydrothermal time model under both sub- and supra-optimal temperatures. The hydrothermal values were 207 and 274 MPa oC for sub- and supra-optimal temperatures, respectively. The parameters and relationships estimated here can be used in soil seed bank dynamics models or can be use to establish a new model for the environment. The results of this study will also be useful for future studies of wild mustard biology and ecology.
Journal of Plant Production, Volume:20 Issue:1, 2013
19 - 34  
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