An Assessment of Variability in Mutant Population of Multicut Forage Sorghum [Sorghum bicolor (L.) Moench]
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Date
2011
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MPUAT, Udaipur
Abstract
The present investigation entitled “An Assessment of Variability in Mutant
Population of Multicut Forage Sorghum [Sorghum bicolor (L.) Moench]” was carried
out with 15 mutants of SSG 59-3, received from CCS HAU, Hisar. The experiment was
laid out in kharif 2010 at Instructional Farm, Rajasthan College of Agriculture, Udaipur in
Randomized Block Design with three replications. Observations were recorded for 71
characters at different cuts on five randomly selected plants for each genotype per
replication except early vigour and regeneration which were on population basis.
Variability parameters and correlations coefficients were computed for all the
characters had significant genotypic differences and path analysis was carried out by
taking green fodder yield per plant per day as dependent character at third cut only.
Analysis of variance revealed significant differences among the genotypes for 58
per cent characters i.e. for 41 characters out of 71 at different cuts.
It was observed that characters like early vigour and N content in root at first cut;
early vigour, number of tillers per plant and HCN content at second cut; and N content in
plant at third cut besides depicting higher GCV, PCV and heritability also exhibited
higher genetic gain. Thus these characters are expected to respond the selection.
However, dry leaf weight per plant at 30 DAFC and regeneration at second cut; and
green fodder yield per plant per day, fresh and dry root weight, early vigour, plant height,
number of tillers per plant at third cut had high estimates of variability (GCV and PCV)
as well as genetic gain but the heritability was moderate. These traits were relatively more
influenced by the environmental fluctuations so the indirect selection through component
characters will be a better approach.
Description
An Assessment of Variability in Mutant Population of Multicut Forage
Sorghum [Sorghum bicolor (L.) Moench]
Keywords
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Citation
Singh and Choudhary, 2011