High germination and vigour: The germination percentage is an indicator of the ability
of the seed to emerge from the soil to produce a plant in the field under normal
conditions. Seed vigour is the capacity of seed to emerge from the soil and survive under
potentially stressful field conditions and to grow rapidly under favourable conditions. The
loss of a seed’s ability to germinate is the last step (not the first step) in a long process of
deterioration (gradual loss of viability). Decrease in seed vigour and other physiological
changes happen before loss of germination. Therefore seed with acceptable germination
can be low in vigour