Genetic Variability and Correlation Study for Yield and Yield Attributes in Coloured Sorghum Genotypes

Author: Akshaykumar, Suvarna, P.H. Kuchanur, G. Girish and M. Lakshmikanth

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Abstract

The experiment was carried out at College of Agriculture Raichur, during rabi 2021 in an augmented design to valuate the variability and characters association among grain yield and yield attributes in 100-coloured sorghum genotypes along with four checks viz., M 35-1, AKJ 1, Paiyur 2 and GS-23. High PCV and GCV were observed for grain yield per plant and neck of panicle followed by panicle weight, panicle width, panicle length, peduncle length and 100-grain weight. Similarly, high heritability coupled with high genetic advance as per cent of mean was observed for the characters viz., plant height, peduncle length, neck of panicle, panicle length, panicle width, panicle weight, 100 grain weight and grain yield per plant which shows that the heritability is due to additive gene effects and selection will be effective for these characters. Significant and positive correlation of grain yield per plant was observed with the characters viz., panicle weight, panicle width, plant height, days to 50 per cent flowering, days to maturity and 100-grain weight at both phenotypic and genotypic level. Among these characters panicle weight (r = 0.8796 and 0.9266) showed high magnitude of positive association at both level with grain yield compared to other characters. Path analysis study revealed that panicle weight had a high direct positive effect on grain yield per plant; panicle width, peduncle length, plant height, days to maturity and 100-grain weight were showed the low magnitude of positive direct effects on grain yield. As a result, the above mentioned characters will be used for selection for increasing grain yield in coloured sorghum genotypes.

Keywords

Coloured sorghum, Variability, Genotypes, Heritability and Correlation

Conclusion

The present investigation revealed that the characters viz., panicle weight, days to maturity, plant height, panicle width and 100 grain weight had a direct positive effect and positive correlation on grain yield per plant. These characters panicle weight, grain yield per plant, panicle width and 100-grain weight also have high PCV and GCV coupled with high heritability and genetic advance as per cent of mean. Characters with high PCV and GCV coupled with high heritability and genetic advance as per cent of the mean will be of great utility in selecting the genotypes. Therefore, the aforesaid characters could be more promising to yield better hybrids in a further breeding programme and considered for selecting parental lines in a hybridization programme. In recent years coloured sorghum grain is gaining demand because of export potential for industrial use as red sorghum in brewing industries and yellow sorghum for weaning in baby foods.

References

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How to cite this article

Akshaykumar, Suvarna, P.H. Kuchanur, G. Girish and M. Lakshmikanth (2023). Genetic Variability and Correlation Study for Yield and Yield Attributes in Coloured Sorghum Genotypes. Biological Forum – An International Journal, 15(3): 397-403.