Indian Society of Genetics & Plant Breeding

Fertility restoration studies involving three diverse cytoplasmicnuclear male sterility systems in Pearl millet

Published on

Pearl millet [Pennisetum glaucum (L.) R. Br.], hybrids
grown widely in India are all based on A1 CMS source.
Though alternative sources of CMS were available and
found to be highly stable, their utility is restricted due to
non-availability of suitable restorers. The investigation on
fertility restoration reaction of the various lines revealed
that out of the 105 lines, 38 exhibited satisfactory (> 60 %)
seed setting on A1, 63(50%) on A4 cytoplasm and 47 lines
(44.76 %) on A5 cytoplasm, acted as restorers. The
frequency of restoration on A4 cytoplasm was quite high
compared to A1 and A5 indicating the possibility of
developing hybrids on A4source. Among the three sources
of male sterility the seed set percentage was highest on
A1 (78.51) followed by A4 (76.10) and A5 (68.72) in kharif
season. However, during summer only on A4 source the
seed set per cent was >70%. The proportion of restorers
exhibiting >80 % seed set was highest on A4 followed by
A5 and A1 across kharif and summer seasons. The mean
seed set percentage (across the seasons) on A4 was
highest (73.50 %) followed by on A1 (71.60%) and 66.60%
on A5.

Keywords: CMS, restorers, seed set percentage, pearl millet, male sterility.


Year: 2010
Volume: 70
Issue: 2
Article DOI: N/A
Print ISSN: 0019-5200
Online ISSN: 0975-6906


B. D.Biradar info_circle

Download PDF