define mass selection and pure-line selection with examples for each - Biology - Strategies for Enhancement in Food Production

Question

define mass selection and pure-line selection with examples for
each

Saravanan Thiagarajan · Answer

DEFINITION OF PURE LINE SELECTION : A UNIFORM STRAIN OF
ORGANISMS THAT ARE CONSIDERED PURE GENETICALLY AND ARISE OUT OF
CONTINUOUS INBREEDING AND ARTIFICIAL SELECTION
DEFINITION OF MAS SELECTION : IT IS A MIXED STRAIN OF ORGANISMS
THAT ARENT PURE AND ARE A MIXTURE DEVELOPED FROM MORE THAN ONE
PURELINE
1 The varieties arent mixtures and are developed as pure lines
in pure line selection The variety is a mixture of pure lines in
mass selection
2 pure line selection involves scietific procedures and is not
practised by farmers Mass selection is practised by farmers
unknowingly
3 Pure line selection is practised only in self pollinated crops
but mass selection is practised in self as well as cross pollinated
crops

define mass selection and pure-line selection with examples for each.