Indian Society of Genetics & Plant Breeding

Development of a cytoplasmic nuclear male-sterility system in pigeonpea using C. scarabaeoides (L.) Thouars.

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The phenomenon of heterosis has been successfully
eJ.Cploited for the genetic enhancement of yield in a number
of cereal and horticultural crops. In pigeonpea (Cajanus
cajan (L.) Millsp.) also, significant yield gains have been
demonstrated through genetic male-sterility based hybrid
technology. These hybrids, however, could not create the
expected impact due to difficulties encountered in their
large-scale seed production. To overcome this bottleneck,
a cytoplasmic-nuclear male-sterility system was developed
from a cross between Cajanus scarabaeoides (L.) Thouars,
a wild relative of pigeonpea, and a short-duration pigeonpea
cultivar. This paper besides summarizing the results of
F1 and backcross generations, reports the maintenance
and fertility restoration systems of this neWly developed
cytoplasmic nuclear male-sterility source. The development
of this technology is expected to help the seed industry
in large-scale seed production of pigeonpea hybrids and
their parents.

Keywords: Pigeonpea, cytoplasmic-nuclear male-sterility, fertility restorer, maintainer


Year: 2003
Volume: 63
Issue: 3
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906



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