Impact of Selected PSII Parameters on Barley DH Lines Biomass and Yield Elements

Abstract

In our study, we focused on the link among various parameters of chlorophyll a fluorescence and yield elements in the barley doubled haploid (DH) lines. There were significant differences in all studied DH lines, both in yield components and parameters of chlorophyll a fluorescence. The most variable parameter was overall performance index of PSII (PI) while the least was the amount of energy trapped in PSII reaction centers (TRo/CS). Considering yield components, high variation was also observed in the subsequent order from highest to lowest variation: biomass, thousand-grain weight (TGW) and grain number per plant (GNP). Significant negative correlation was found among the following fluorescence parameters: PI and light energy absorption (ABS/CS), as well as between maximum photochemical efficiency (Fv/Fm) and TGW, and between biomass and electron acceptors pool size from PSII (Area). Conversely, significant positive correlation was found between: Area and PI, Area and energy used for electron transport (ETo/CS), Area and GNP, PI and ETo/CS, PI and GNP, ABS/CS and TRo/CS, as well as between ETo/CS and GNP. Yield components combined with fluorescence parameters of chlorophyll a expressed with canonical variate analysis did not clearly distinguish the barley DH lines into hulled and hull-less groups. The mean value for these groups significantly differs only for ETo/CS and TGW values. The other parameters are distributed almost uniformly in hulled and hull-less lines. However, certain hull-less DH lines possess higher yield parameters compared to parental forms, which suggests a possibility of occurrence of transgression effects. The results suggest the chance to find valuable hull-less forms that are desired by breeders and plant producers, since these forms possess favorable functional features.

Relationships between Volatile Organic Compounds Released by Wheat Plants Following Artificial Stress and Their Potential Influence on Natural Pest Management

“…The Fisher's least significant differences (LSDs) were calculated for cultivars and times as well as cultivar × time interaction and on this basis, homogeneous groups were determined. The relationships between particular VOCs were assessed using Pearson's correlation, independently for each artificial stress factor [16]. These relationships are represented in the results section as heatmaps.…”

Effect of Amino Acid and Titanium Foliar Application on Smooth-Stalked Meadow Grass (Poa pratensis L.) Macronutrient Content

“…Additionally, the products significantly affected the concentration of macronutrients in plants. Statistical methods as Mahalanobis distances and correlation analysis are often applied in agriculture [45][46][47].…”

Selection of High-Yielding and Stable Genotypes of Barley for the Cold Climate in Iran

“…It was proven that barley kernels can be considered a wholesome food commodity, as they provide minerals, calcium and phosphorus, a moderate amount of protein and fiber, and B vitamins [2]. In Iran, and even in some developing countries, barley is known as the second most important food and feed crop after wheat [3]. Iran was one of the ten countries with the highest barley seed production in 2020 [4].…”