Genotypes selection of Sorghum bicolor L. based on interrelationship of quantitative trait's using Genotype×Traits and Genotype by Yield×Traits biplot

Abstract

Sorghum is one of the most important crops grown for human diet and bio-energy. An understanding of genotypes efficiency by evaluating multivariate methods like genotype by traits (GT) and genotype by yield*trait (GYT) biplot is essential to outbreak suitable genotype selection obstacles in breeding program of sorghum. Therefore, the traits interrelationship of eighteen sorghum's genotypes were investigated based on a randomized complete block design with three replications during 2016-17. The data of various characters were subjected to ANOVA, Pearson correlation, the GT and the GYT biplot analysis via SAS and GGE biplot software. The analysis of variance depicted that there were a significant differences among genotypes based on evaluated variables (P>0.01), except panicle width (PW) in 2017. The evaluation of traits and traits association by GT and GYT biplot indicated that there were a significant (P>0.001) differences among traits and yield-trait combination which strongly approved by numerical Pearson correlation. The GT biplot indicated that the best-ranked genotypes was including G4>G15>G6>G17>G18>G16>G13>G3 and the GYT biplot superiority-ranked genotypes was comprised G4> G6> G17> G3> G15> G10> G2> G7>G11. Both the GT and GYT biplot it is confirmed that FGCSI04 (G4) was the most suitable and an ideal genotype that was strongly suitable to sorghum production according to prominent performance for PH, PL, PW, GY and BY. This study showed that there were existed a high genetic diversity among genotypes for the studied variables (e.g., FGCSI04), in which GT and GYT approaches simultaneously are able to help breeders to choose prominent genotypes as well as reduces genetic load in the breeding programs.