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Seeds germinate\nby following accumulation of thermal time in degree days/hours,\nquantified by multiplying the time of germination with excess\nof base temperature required by each seed for its germination,\nwhich follows log-normal distribution. The theoretical\ngermination course can be obtained by regressing the rate of\ngermination at various fractions against temperature (Garcia et\nal., 1982), where the fraction-wise regression lines intersect\nthe temperature axis at base temperature and the methodology of\ndetermining optimum base temperature has been described by\nEllis et al. (1987). This package helps to find the base\ntemperature of seed germination using algorithms of Garcia et\nal. (1982) and Ellis et al. 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