Indian Society of Genetics & Plant Breeding

Effects of cytoplasm from Cajanus cajanifolius on the performance of pigeonpea hybrids

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This research communication reports results of the first
study on the influence of cytoplasm on the performance of
CMS-based pigeonpea hybrids. In this study two isonuclear
lines with diverse cytoplasm were compared in
hybrid combinations involving seven inbred fertility
restorers. Pusa Ageti-(F) had cultivated pigeonpea
cytoplasm, while Pusa Ageti-(A4CMS) carried the cytoplasm
of a wild species Cajanus cajanifolius. The trials conducted
over two seasons, showed small cytoplasmic effects on
the traits studied. For seed yield the hybrids with cultivated
cytoplasm were better in performance; however the extent
of the superiority of these hybrids varied. The greatest yield
penalty of 19.1% due to the cytoplasm of the wild species
was recorded in cross involving restorer line R-2364. For
other traits no definite trend was observed in favour of any
specific cytoplasm. The cytoplasmic effects on the hybrids
also appeared to be influenced by genetic variation in the
pollinator lines.

Keywords: Cytoplasm, iso-nuclear lines, pigeonpea, wild species, yield components


Year: 2015
Volume: 75
Issue: 4
Article DOI: 10.5958/0975-6906.2015.00077.2
Print ISSN: 0019-5200
Online ISSN: 0975-6906


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