Thursday morning, July 16th
Dr. Catalino Blanche and the teachers working in his lab
presented "Seeds - Dead or Alive?"
Why do we need to
know if a seed is dead or alive? When was the last time you planted seeds
but nothing happened? Farmers cannot afford for this to happen. By
simple testing, one can find out if a monocot or dicot is alive with random
sampling and get a better idea of the viability of the seeds.
There are several kinds of tests that can be conducted: cutting tests,
excised embryo tests, topographical tetrazolium tests, hydrogen peroxide tests,
and radiographic methods. The method we used was the tetrazolium test or
Tz red test. When the seeds are split and immersed in the 1.0% solution,
they turned red if viable.