This is a little experiment I conducted to compare the rate of germination between seeds that were initially given access to light versus seeds that were left in the dark.
Paper Towels • Beaker • Pipet • Water • Petri Dishes • Aluminum Foil • Scissors • Soil • White Beans • 2 Cardboard Trays • Pen • Sticky Notes
I needed the paper towels to fit inside the petri dishes, so I drew a circle around the dishes on the paper towels. I found out my scissors were literally not quite ‘cut out’ to cut the paper towel circles, and I ended up jaggedly tearing the circles out (science isn’t always pretty).
Once I placed the paper towels into the petri dishes I saturated them with water; not enough to pool water in the dishes, but enough to make the paper towels moist.
Next, I arranged ten white beans into each dish; I covered one petri dish with foil, and labeled them accordingly.
And then I waited. Each day I would check to make sure the paper towels were still moist, and add water as needed.
Five days later, the magic began! The beans had begun to germinate, and it was time to plant them!
As you can see, it appears the beans that were given light during the germination have more sprouting. Interestingly enough, germination & sprout growth aren’t actually affected by light exposure. It’s hard to tell in the picture above, but more bacteria colonies were present in the seeds that were kept in the dark. Coincidence?
I then prepared the soil beds the seeds would be calling home.
How cute is this tiny shovel?!
After the seeds were planted into their appropriate containers, I moistened the soil and left them both in a sunny spot. And then waited again.
Three days later, the real sprouting began!
It appears the beans that were given light during germination are growing more rapidly, however that may be due to the fact that they had more of a sprout when planted.
One day later, the ‘dark’ beans began to wake!
And the morning after that, I woke up to this:
I believe it is time to transplant these little guys and start harvesting some beans! Maybe I’ll give the ‘dark’ beans another day..
Side note: Happy 50th blog post!