Assessment of the correlation between grain yield and its components in spring barley on an acidic soil

Abstract

A field trial was conducted in 2016-2017 to determine the effect of different rates of mineral fertilisers, especially phosphorus, and lime on grain yield, yield components and their correlation in the spring barley cultivars 'Dunavac' and 'Novosadski 456' under dryland farming conditions at the experimental field of the Secondary School of Agriculture, Kraljevo. The experiment was performed on a very acidic soil (pH H2O 4.5), in a randomised block design with three replications. Grain yield, stem length, number of spikes m-2 , spike length, number of grains per spike and grain weight per spike increased in response to mineral fertilisers and lime. Both cultivars performed better under mineral fertilisation and liming treatment than under increased phosphorus fertilisation, as the availability of macro-and micronutrients increased with increasing soil pH i.e. due to phosphorus immobilisation in the highly acidic environment. In general, significant positive correlations were observed among yield components, and between grain yield and its components. Grain yield was significantly positively correlated with number of spikes m-2 , spike length, number of grains per spike and stem length. Correlations between grain yield and its components under diverse agroenvironmental conditions can guide the selection of cultural practices as well as the choice of cultivars for unfavourable growing conditions.

Variability, Correlation, and Path Coefficient Analysis of Grain Yield and Yield-Related Traits of Facultative Barley Accessions Grown Under Rainfed Conditions

“…A significant association of grain weight per spike with grain number per spike (r=0.644) and 1000-grain weight (r=0.668) was also found. Similar correlations between grain yield and yield components that were observed in present study were also reported by Madić et al (2019), Negash et al (2019) and Aklilu et al (2020).…”

Reaction of barley to top-dressing with different types of nitrogen fertilizer

“…Topdressing nitrogen fertilizer in study [12] significantly changed chlorophyll content where this practice led to the highest chlorophyll content whereas the minimum one was related to no such application of nitrogen. In barley breeding, physiological studies are mainly focused on correlation between grain yield and its components [23], but we try to assess the relationship between changes in leaf pigment complex and some elements of yield structure.…”

Development of selection criteria for improving grain yield in wheat grown in different agro-ecological environments

“…Therefore, knowledge of the relationship between grain yield and its components is of particular practical importance for the implementation of breeding programs 2018;Rohani and Marker, 2016a;Khan et al, 2017;Baye, 2020). The study of yield components is of special importance in stress conditions, as well as in the early generational stages of plant breeding (Dimitrijević et al, 2013;Madić et al 2019). Genotypic and phenotypic correlations provide information on the degree of association of yield components with economic productivity, i.e.…”