Seedfork said:Several months ago I was looking for how long before a rain the pollen would need to protected after being applied, and now I see it is one hour approximately.
@Seedfork
Any specific time period for the pollen to germinate is not really a constant. The pollen grains will not germinate until the stigma becomes receptive and produces stigmatic fluid. That means the pollen grains will not germinate quickly if the flower is pollinated before the pistil is receptive (before stigmatic fluid has been produced). For example, if the hybridizer wants to be absolutely certain that only the pollen they place on the stigma has a chance and they open the flower the day before it will be ready to open on its own (or earlier) and pollinate it then the pollen will probably not germinate for many hours.
Also for plants most development depends on the temperature. At lower (and higher) than optimum temperatures things take longer. Things happen the fastest at their optimum temperature. How long is required for the pollen to germinate may depend not only on the stigma being receptive but also on the temperature.
