Indian Society of Genetics & Plant Breeding

RESPONSE TO SELECTION AND EARLY GENERATION EVALUATION IN PEA

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The response to selection was estimated in F3, F4 and Fs generations from the plants selected
in F2 and F3 generations of the cross HPPC 63 X Lincoln. The response to selection and
realised heritability increased in the successive generations. The plants selected in F2
generation did not show any correlation with their progenies in F3 and F4 generations for
all the traits except resistance to powdery mildew disease which showed consistancy in
subsequent generationsalso. However, the plants selected in F3 generation showed positive
correlation with their progenies in F4 and Fs generations for seed yield, pods/plant, l00-seed
weight, harvest index, and reaction to powdery mildew. Maximum response was observed
in Fs generation when selection was practised in F3 generation. The study, therefore,
revealed that selection for polygenic traits like seed yield should preferably be done after
F2 generation. However, selection for monogenic or oligogenic traits like resistance to
powdery mildew can be practised in F2 generation itself.
 

Keywords: Selection response, selection differential, heritability.

Info

Year: 1993
Volume: 53
Issue: 3
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906

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