Difference between Pure Line and Mass Selection
Pure Line Selection
The variety developed as a pure line
The variety is a mixture of several pure lines.
It is not practised by farmers.
It is practised by the farmers unknowingly.
It is practised in self-pollinated crops.
Practised in self as well as cross pollinated crops.
The varieties developed are highly uniform and the variation is purely environmental.
The variety is heterozygous hence not uniform and having genetic variation.
The selected plants are subjected to progeny test.
Progeny test is not carried out.
The variety is best pure line present in the original population.
The variety is inferior to the best pure line.
Varieties are having narrower adaptability and stability in performance than mixture of pure lines.
The varieties developed have wider adaptability and greater stability than pure line varieties.
Pollination is controlled.
Pollination is not controlled.
The variety developed is homozygous, uniform in quality.
The variety developed in a mixture of several types hence heterozygous.
About 9-10 years required for developing variety.
About 5-7 years period is required to develop variety.
Once developed variety is maintained easily.
It is repeated every year to maintain purity.
The variety is easily identified in seed certification programme.
The variety developed is relatively difficult to identify in seed certification programme.