Genotypic and Phenotypic Correlation in Grain Sorghum
ANBAR JOURNAL OF AGRICULTURAL SCIENCES,
2010, Volume 8, Issue 3, Pages 80-89
AbstractA field experiment was conducted in spring and autumn of 2004 on Abu-Ghraib Experimental Station, State Board of Agri- cultural Research on fourteen genotypes and promising lines of grain Sorghum. Using Randomized Complete Block Design with three replicates to determine genotypic, phenotypic variances ,correlation coefficients and heritability were conducted for yield, yield components and some agronomic characters.
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The results showed that a high significant differences among genotypes for all characters studied in both seasons, coupled with high heritability (broad sense) for all characters ranged from 0.92- 0.99 for spring and 0.83 -0.99 for autumn season. The results showed that grain yield the genotypic and phenotypic positive and significant coefficient with correlation number of days till flouring (0.616 and 0.556), leaf area (0.720 and 0.675) plant height (0.924 and o.285) biologic yield (0.950 and 0.926) 1000 Kernel weight (0.872 and 0.870) and chlorophyll contain (0.749 and 0.693) in spring season respectively. While in autumn season the grain Yield should genotypic correlation coefficient with leaf area (0.959 and 0.938) ,plant height (0.417 and 0.409 ) ,biological Yield (0.938 and 0.910), 1000-kornel weight (0.907 and 0.880) and chlorophyll contain (0.859 and 0.824) respectively. Thus it can be used the characters above as selection index for improvement of grain yield in sorghum.
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