GENOTYPIC AND PHENOTYPIC VARIANCE AND CORRELATIONS IN S5 LINES OF A PEARL MILLET POPULATION (Pennisetum americanum (L.) Lcckc)
GENOTYPIC AND PHENOTYPIC VARIANCE AND CORRELATIONS IN S5 LINES OF A PEARL MILLET POPULATION (Pennisetum americanum (L.) Lcckc)
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Date
2004-03
Authors
Yeye, M. Y.
Aba, D. A.
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Abstract
There were 78 S5 lines of a nutlet population evaluated in two locations for two years in 1998 and 1992
using a simple 9x9 lattice design because of the great number of genotypes involved. Mean performance over
the two locations were similar for some traits, hut different for certain others. Analysis of variances pooled over
the years and locations indicated that genotypic mean square estimates were significant at 1% level of
probability for plant height, car length, ear weight and threshing percentage, and at 5% level for grain yield per
ear, days to 50% heading and days to 50%, blooming. Over the locations, the estimates were significant at 1%
level for noding and threshing percentage. Both negative and positive correlation coefficients were observed
and for a larger number of the associations in the population, the genotypic correlation coefficients were
slightly higher than the phenotypic. The highest correlation coefficient was obtained between the ear weight and
threshing percentage. The tallest plants were also positively correlated with plant noding (rg 0.910). Based
on the correlation coefficient obtained in this study, plant nodding and ear characters would be best selection
indices for obtaining a high yielding millet population. The closeness between phenotypic and correlation
coefficient will render efficient any selection based on the phenotype,
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post print journal articles
Keywords
PEARL MILLET,, GENOTYPIC,, PHENOTYPIC VARIANCE,, CORRELATIONS,, Pennisetum americanum,