Indian Society of Genetics & Plant Breeding

Efficiency of breeding methods in early segregating generations in cowpea [Vigna unguiculata (L.) Walp.]

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The segregating generations from the crosses C152 x
APC412 and TVX944-02E x APC255 of cowpea [Vigna
unguiculata (L.) Walp.] were advanced through pedigree,
bulk and single seed descent (SSO) methods. The
selection was made from F2 based on seed yield per
plant and advanced to F3 and F4 generations. The SSO
populations matured early followed by bulk and pedigree
populations. The shift in the means in positive direction
were better achieved through pedigree method as
compared to bulk and SSO methods in F3 to F4 generations
for all the traits in both the crosses, whereas, in SSO
and bulk populations the shift in the means were in either
directions. The pedigree populations had high heritability
estimates. The bulk and SSO populations had moderate
to high value of heritability and genetic advance for most
of the traits. For throwing superior segregants, the
pedigree and SSO populations were equally efficient, but
the bulk method turned out to be less efficient.
 

Keywords: Cowpea, pedigree, bulk, single seed descent, heritability, genetic advance.

Info

Year: 2002
Volume: 62
Issue: 3
 Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906

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