usually we used to grow some potatoes in the village,
we kept as seed the smaller ones of the last year corps,
then some 'strong' 'better' and more 'healthy' seeds came to market for farmers,
after about a decade,
all the potatoes hold from last year as seed, give a plant that makes small potatoes as an apricot, underneath,
and smaller than cherry tomatoes up the ground in air, and have tiny thorns,
most of the local potatoe production is lost, and seed gives a strange bastard plant,
JUST TO BUY THEIR SEED,
Scientific work, has nothing to do with market applications,
That is what I call sterilized seed.