How do I do experiments to show the effect of temperature on germination.experiments with examples

If you are trying to do an experiment to test out the
effects of temperature on seed germination, you need to control for
all other variables, or your experiment will not be valid. That
means setting up identical containers with the same bedding material, the same moisture
level, the same light level, and the same types and densities of seeds, but subjecting
them to different temperatures. Light would be difficult to control in this experiment
unless you excluded it entirely. I would suggest setting up three flats of seeds,
covering them all tightly with aluminum foil to exclude light, and setting one in the
refrigerator, one somewhere out of the way in the house (don't put it in the sun or you
will have huge temperature swings in it) and one in a stable warm spot or on top of a
heating pad.You also need to decide what data to gather. You can simply count sprouted
seeds by visual inspection each day, or you can carefully measure the lengths of the
radicals (baby roots) of each seed after a set number of
days.

Also, if you are doing this experiment at home,
mustard seeds are cheap and grow very quickly. You can get them in the spice section of
the grocery store. Also, if you just want to work on germination, you don't even need
soil; you can line containers with dampened paper towels and put the seeds right on top
of them; the seeds will sprout readily, and the roots will be easy to
see.

The links below may help.