Grain yield and correlated traits of bread wheat lines: Implications for yield improvement

Abstract

Global wheat yields are suffering due to differences in regional climatic conditions and soil fertility. Plant breeders are continuously working to improve the yield per unit area of wheat crop through selecting superior lines as parents. The screening and field evaluation of available lines allow the selection of superior ones and subsequently improved varieties. Therefore, heritable distinctions among 33 bread wheat lines for yield and related attributes were assessed under field conditions. The experiment included thirty lines and three check varieties. Data relating to different plant characteristics was collected at maturity. Significant differences were recorded for yield and related traits of tested wheat lines and check varieties. Wheat lines V 6 , V 12 and V 20 proved better with reduced number of days to reach anthesis and other desirable traits compared to check varieties. Days to start heading had strong correlation with spike length and number of spikelets spike -1 . Flag leaf area had positive relationship with peduncle length and yield related traits. The 1000-garin weight and grain yield were also correlated with each other. It is concluded that V 6 , V 10 and V 20 proved better for all studied traits than the rest of the lines. Therefore, these lines could be used in wheat breeding program as parents to improve yield.

Analysis of Genetic Variability, Correlation and Path for Yield and Its Attributing Traits in Wheat (Triticum aestivum L.)

“…The substantial genetic variation among the genotypes suggests that they exhibit genetic diversity, providing an excellent opportunity for breeders to select suitable genotypes for specific traits of interest in variety development. A similar results reported by Getachew, Ullah and Yared et al [14][15][16] that the analysis of variance revealed significant genetic variability among all traits for the treatments. Table 3 presents the estimated range, minimum and maximum values, along with their corresponding genotypes, mean values, and corresponding standard errors for the nine traits examined in wheat genotypes.…”

Uncovering the genetic basis for quality traits in the Mediterranean old wheat germplasm and phenotypic and genomic prediction assessment by cross-validation test

“…The properties considered by the millers are mainly kernel weight, hardness, colour, grain protein, and test weight (weight per volume) which are related to grain yield and quality with varying heritability (Aydin et al, 2010;Guzmań et al, 2016;Irfan Ullah et al, 2021). Grain hardness is another essential characteristic for millers.…”

Field screening of diverse wheat germplasm for determining their adaptability to semi-arid climatic conditions

“…Drought stress is one of the mainly abiotic stresses negatively affecting the productivity of wheat and regional and landscape scales [19][20][21]. A significant decline in the yield [21][22][23] and related traits of wheat crop has been reported due to drought stress at different phenological stages [11,24,25]. However, the extent of yield reduction depends on the phenological stage of wheat crop and reproductive stage is regarded as the most crucial stage where optimum moisture supply is mandatory for higher yield [5,11,24].…”