Immunity : Not subject to attack or infection of a
specific disease or pest.
Resistance : The
ability of a variety to restrict the growth and development
of a specified pest or pathogen during all or part of the
vegetative cycle. High resistance (HR): The varieties limit
the growth and development of the specified pest or pathogen
under normal pressure of disease or pest, when compared to
susceptible varieties. But these varieties may exhibit some
symptoms or damage under heavy disease pressure of the pest
Intermediate resistance (IR) : The varieties limit
the growth and develop- ment of the specified pest or
pathogen, but may exhibit a greater range of symp- toms
compared to highly resistant varieties. Varieties with
intermediate resistan- ce show, however, some symptoms or
damage of disease minor sensiti- ve varieties, when grown
under environmental conditions and / or the like of pest
pressure or illness.
Susceptibility : A
susceptible variety is unable to endure a specific pest or
disease under any condition .
Tolerance : Capacity
of a variety to support the presence of a pest or disease,
while developing symptoms, but without incurring significant
consequence for the growth, development and appearance of
Primed Seeds :
Consists of seed that has pre-germinated in order to obtain
faster and more uniform emergence after sowing. Primed seeds
are sold only by seed count.
Film Coating : Film
coating means the application on the seed of an uniform film
which is generally colored. The original shape of the seed
is maintained. Film coating with insecticides must be
colored. Film coated seeds are sold only by seed count
Pelleting consists of covering the seeds with materials
which add weight and modify the shape for a better
adaptation to sowing machines. Sold only by seed count.