Fig. 4From: Intraspecific variation of Quercus ilex L. seed morphophysiological traits in Tunisia reveals a trade-off between seed germination and shoot emergence rates along a thermal gradientEffect of germination temperature on seed germination rate (1/t50) in the 15 Tunisian Quercus ilex populations studied and determination of seed base temperature, Tb (ordinate) for seed germinationBack to article page