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The minimum temperature for germination of barley is 34 degrees to 36 degrees F (1 degrees - 2 degrees C). After the seed takes up moisture, the primary root (radicle) emerges. The radicle grows downward, providing anchorage and absorbing water and nutrients, and eventually develops lateral branches.arley can be distinguished by differences in head type and growth habits. In a six-rowed barley, three kernels are formed at each node of the head while in a two-rowed type, only a single kernel forms at each node (figure 1). Barley is also classed by its requirement for cold temperatures.
Soil temperature is crucial for successful germination. Ornamental chile pepper seeds like the NuMex Twilight germinate well at lower temperatures, whereas the bhut jolokia or habanero germinate better at warmer temperatures around 70-90ÂºF. Soil temperature has a massive impact on the success rate of germination.rnamental chile pepper seeds like the NuMex Twilight germinate well at lower temperatures, whereas the bhut jolokia or habanero germinate better at warmer temperatures around 70-90ÂºF.