Abstract:
The study was conducted at Sudan University of
Science and Technology, College of Agricultural Studies,
Shambat, in the period from July to October 2009, to study
variability and correlation between yield and yield
components in eleven genotypes of forage sorghum.
The experiment was laid out in a randomized
complete block design with three replications. Data were
collected for six parameters namely fresh weight t/ ha, dry
weight t/ha, leaf to stem ratio, shoot to root ratio, number
of tillers per plant and days to 50% flowering. The
phenotypic and genotypic variances, phenotypic and
genotypic coefficient of variation, phenotypic and
genotypic correlation between different characters were
determined. The analysis of variance revealed highly
significant differences (p ≤ 0.01) for shoot to root ratio,
leaf to stem ratio and days to 50% flowering. On the other
hand non-significant differences were detected for dry
weight, fresh weight and number of tillers. Also the
results showed in phenotypic variances highest values at
fresh weight and the lowest value at stem ratio on the
other hand genotypic variances the highest value at 50%
flowering and the lowest value at number of tillers.
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In phenotypic coefficient of variation the highest
value at shoot to root ratio and the lowest value at
number of tillers. On the other hand in genotypic
coefficient of variation the highest value at shoot to root
ratio and the lowest value at fresh weight, respectively.
The results showed positive and highly significant
phenotypic correlation between fresh weight and number
of tillers also positive and significant genotypic correlation
was obtained between fresh weight and dry weight.
