Indian Society of Genetics & Plant Breeding

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COMBINING ABILITY OF ERGOT RESISTANT MUTANTS OF THE RESTORER K 560- 230 IN PEARL MILLET

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Combining ability of twenty mutants of restorer line K 560-230 was studied in line x tester
mating design with three male sterile lines as testers MS 5054, MS 5141 and MS 81 and the
performance of cross combinations was compared with those of restorer K 560-230. The
mutant lines were only those which have recorded below 100/. incidence of ergot in contrast
of 50% incidence in control under artificial inoculation for two consecutive years. The
combining ability analysis of variance revealed the prevalence of both additive and
nonadditive gene effects. The mutant lines 50-1 and 45-1 were good general combiners for
number of productive tillers, days to flowering and grain yield, and 39-1 for grain yield and
days to maturity. The specific crosses 5141 A x 90-1, 5141 A x 142-1, 5141 A x 145-1 and 5141
A x 147-1 showed superior sca effects over the control hybrid MS 5141 A x K 560-230. The
present study indicated that mutagens can be used to quickly improve the parents of
hybrids for specific traits with an added advantage of induced disease resistance.
 

Keywords: Petmisetum americanum, pearl millet, combining ability, yield components.

Info

Year: 1997
Volume: 57
Issue: 1
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906

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