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African
Journal of Agricultural Research Vol. 1 (5), pp. 194-198, December 2006
ISSN
1991- 637X© 2006 Academic Journals
Full
Length Research Paper
Studies on character association and path
analysis of certain quantitative characters among parental lines of pearl
millet (Pennisetum glaucum ) and their f1 hybrids in a
diallel cross.
A1*.
U. Izge, A2. M. Kadams, and D3. T. Gungula
1Department
of Crop Production, Faculty of Agriculture,University of Maiduguri, P.M.B.
1069, Maiduguri,Borno State,
Nigeria.
2Department
of Crop Production and Horticulture, Schoolof Agriculture and Agricultural
Technology, Federal University ofTechnology, Yola, P.M.B. 2076, Yola,
Nigeria.
3Department
of Crop Production and Horticulture, Schoolof Agriculture and Agricultural
Technology, Federal
University of Technology, Yola, P.M.B. 2076, Yola, Nigeria.
*Corresponding author’s E: mail: bamsyizge@yahoo.com.
Accepted 10
November, 2006
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A two-year study was conducted during the cropping season of 2004 and 2005
at Maiduguri (110 53I N, 130 16I
E) and at Yola (90 8I N, 120 29I
E), Nigeria. The study was conducted to determine the correlation
and path coefficients among the yield and yield component characters in 10
parental lines and 45 hybrids of pearl millet (Pennisetum glaucum
L. R. Br), formulated by a diallel cross excluding reciprocals. Strong and
significant genotypic and phenotypic correlations were observed between
total grain yield with yield/plant, number of tillers/plant, number of
leaves/plant, plant height, panicle length and number of seeds/panicle.
The path analysis indicated that, grain yield/plant, days to 50% flowering
and plant height had the highest direct effects on total grain yield. The
panicle length and the threshing percentage had the least direct effects
on total grain yield. The direct effect of yield/plant was greatly reduced
by the negative indirect effects through days to 50% flowering and downy
mildew incidence, even though it was not significant. Similarly, the
direct effect of plant height was very much influenced by the negligible
indirect effects of threshing percentage, downy mildew incidence and
100-grain weight. The grain yield/plant, number of seed/panicle, and plant
height in this study has been identified as selection criteria for
obtaining good parental lines and hybrids in a pearl millet breeding
program.
Key words: pearl millet, total grain yield, correlation, path analysis,
parental lines, hybrids.
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