Correlation and path coefficient analyses of phenological traits, yield components and quality traits in wheat

Abstract

This study was conducted to characterize the phenological traits, yield components and quality traits affecting wheat grain yield. Three wheat genotypes were evaluated during three planting dates (November 20, December 5, and December 20) and at four seeding densities 300, 350, 400 and 450 seeds per m2 for two years. Multivariate analyses were conducted based on the interaction effects of planting date and seeding density (PS), planting date and genotype (PG) and seeding density and genotype (SG) mean values. The results of correlation analysis showed that grain yield was significantly and positively correlated with biomass yield (0.91**), days to spiking (0.81**), days to anthesis (0.83**), and days to maturity (0.57*) for PS; with biomass yield (0.94**), days to spiking (0.87**), days to anthesis (0.75*), and harvest index (0.83**) for PG; with gluten index (0.73**), harvest index (0.68*), and 1000-grain weight for SG. Path analysis revealed that biomass yield for PS and PG, harvest index for PG and SG, and gluten index for SG exhibited the highest positive direct effect. Stepwise regression analysis also revealed important effect of biomass yield, harvest index, and days to maturity for improving grain yield in different agronomical conditions.

Path Coefficient Analysis for Grain Yield and Some of its Attributes in Bread wheat (Triticum aestivum L.)

“…The values of positive correlation were recorded between grain yield and each of number of spikes. Fouad (2018), Rathod et al, (2019), Upadhyay (2020) and Milkessa ( 2022)), biological yield/plant Shamuyarira et al, (2019), AL-Najjar and Al-Zubaidy (2020), Baye et al, (2020), Semnaninejad et al, (2021) and Milkessa (2022)). In addition, the obtained values of correlations are in line with those obtained by Saleh (2017), Barman et al, (2020), Haydar (2020), Kadan et al, (2022), Mahdy Rasha et al, (2022 and Stojsin et al, (2022).…”

Influence of Sowing Time on the Quality and Micronutrient Contents of Bread Wheat (Triticum aestivum L)

“…Zinc content path direct effect (0.065) was positive, but due to some traits such as hectoliter weight and crude protein which provided large indirect negative effect resulted in negative correlation value. Semnaninejad et al, [26] reported that the direct effect of wet gluten and total gluten on grain yield was negative, because starch accumulation increase due to photosynthesis and supply of assimilates caused reduction of fiber ratios in grain.…”