Seed is one of the most important ingredients to the total potato production management program
a variation among states as to how seed plots are maintained, however
there has been a trend in the adoption of the limited generation
programs. Michigan was one of the leaders in the United States to
adopt this scheme when it was initiated in 1964.
The limited generation program in Michigan utilizes the tissue culture
system. Within the tissue culture system plants are produced under
aseptic conditions, tested for disease, and transplanted in the greenhouse
to produce the nuclear class of seed or what is commonly known
as mini-tubers. These mini-tubers, under normal field conditions,
produce the field year 1 class. The following year, the field year 2 class
is produced from the field year 1 class seed. This process continues
through the field year 6 class, after which the seed lot is no longer
eligible for recertification. Rigid inspections and standards are
maintained to help ensure that the best quality seed is made
available to the buyer.