Variability of dry substance accumulation and utilization parameters of Winter wheat plant

Abstract

Some dry substance accumulation and utilization parameters of wheat plant and their influence on grain yield have been studied through a field trial with 20 winter wheat cultivars. The studied parameters value (biological yield dry substance reutilization, number of grains per spike, 1000 grain mass plant height, etc) varried depending of genotypic specificity and environmental conditions. Grain yield was influenced not only by the total dry substance accumulation in plant (i.e. biological yield), but also by this accumulation amount before and after flowering. Yield forming was affected by many parameters, and cultivar range was different for various parameters. The best grain yield was observed in cultivars having elevated values of more than few parameters. The highest mean grain yield was observed in cultivar Tina, and also high grain yield values were found in cultivars Gruža Nevesinjka, and Toplica

The Spike Characteristics of Winter Wheat (Triticum aestivum L.) Varieties in Agro–Ecological Conditions of Banja Luka Region

“…The number of grains per spike ranged from 33.9 to 40.8 for different wheat varieties in Lloveras et al (2004) and the effects of variety, sowing density and year were significant at P ≤ 0.01, as well as their two-factor interactions. Stojković et al (2004), who investigated 20 winter wheat cultivars found that this parameter ranged from 37 to 54 in the first year, with average of 44 grains per spike and from 21 to 31 in the second year, with average of 26 grains per spike, while significant differences at both LSD levels for year and variety were present.…”

“…Several studies were done in order to investigate wheat spike parameters, such as number of grains per spike (Lloveras et al, 2004, Đurić et al, 2016, Stojković et al, 2004, Guberac et al, 2000, grain weight per spike (Knežević et al, 2015, Barić et al, 2008, Protić et al, 2013, Zečević et al, 2010, Gaile et al, 2017 and spike length (Banjac, et al, 2010;Kobiljski and Denčić, 1997;Shankarrao et al, 2010;Petrović et al, 2007;Zečević et al, 2004). It is also widely known that the obtained yield in specific environmental conditions is affected by the realization of yield components.…”