GENETIC PARAMETERS, CORRELATIONS AND PATH ANALYSIS AMONG YIELD AND YIELD CHARACTERS IN GRAIN SORGHUM

Abstract

A population of 15 genotypes of grain sorghum varieties exhibited significant genotypic variation for ten characters selected in and around the ear head of the crop. The magnitude of PCV and GC were more or less equivalent for number of whorls per ear head, rachis per ear head, number of grains per ear head, 1000 grain weight and grain yield. These characters were less affected by environmental fluctuations whereas the character number of grain per earhead showed least or not affected by environmental changes. Seed density was remarkably masked by environmental components. Four among ten characters registered high values of heritability and genetic advance indicating the presence of addition genc effects. The grain yield showed no correlation with most of the component characters except with 1000 seed weight and number of grains per rachis which may be due to the elimination effects of one or other characters contributing for grain yield. This suggests that it is a complex character in the sorghum. Path analysis indicated that 1000 seed weight and number of grains per rachis are the prime characters for the improvement of genotypes.

DOI

https://doi.org/10.29321/MAJ.10.A01066

Pages

625 - 628

Creative Commons

Copyright

© The Author(s), 2025. Published by Madras Agricultural Students' Union in Madras Agricultural Journal (MAJ). This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium, provided the original work is properly cited by the user.

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