CORRELATION AND PATH ANALYSIS OF YIELD AND YIELD ASSOCIATED TRAITS IN GRAIN SORGHUM (Sorghum bicolor L.) GENOTYPES

doi:10.12816/ejpb.2022.272725

CORRELATION AND PATH ANALYSIS OF YIELD AND YIELD ASSOCIATED TRAITS IN GRAIN SORGHUM (Sorghum bicolor L.) GENOTYPES

Document Type : Original research

10.12816/ejpb.2022.272725

Abstract

An investigation was carried out on 24 restorer lines of grain sorghum and Dorado as a check variety to asses associations among grain yield and some of its components and to find out their direct and indirect effects on grain yield/panicle during 2020 and 2021 at two locations (Shandaweel Agric. Res. Station, Sohag Governorate and Arab El-Awamer Agric. Res. Station, Assuit Governorate). The combined analysis of variance for 25 genotypes across two years under two locations reveled highly significant differences among genotypes and locations for all studied traits. Moreover, the genotypes × locations interaction variance was also highly significant for all the studied traits. The highest value for 1000-kernel weight across two years under two locations (37.69 g) was given by R-sh-36 genotype and for grain yield/panicle (72.65 g) by R-sh-64. At Shandaweel a positive and significant or highly significant correlation was found between grain yield and each of panicle width, 1000-kernel weight and grain yield (0.276, 0.543, respectively). On the other hand there are negative and highly significant correlation (-0.334) between panicle length and grain yield. At Arab El-Awamer, positive and significant or highly significant correlation was found between panicle width, panicle length, 1000-kernel weight (0.343, 0.385, 0.484, respectively). The path analysis at Shandaweel Station showed that 1000-kernel weight had high positive direct effect on grain yield (0.477), In addition, panicle length had a positive direct effect on grain yield (0.299). Morever, at Arab El-Awamer location, the path analysis showed also that 1000-kernel weight had high positive direct effect on grain yield (0.347), also, panicle length had positive direct effect on grain yield (0.205).

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