Effect of genotype on total biomass formation during the vegetation period of common wheat varieties

Albena Ivanova, Nikolay Tsenov

Abstract: The investigation was carried out under field conditions during 2009 – 2011 in the trial field of Dobrudzha Agricultural Institute – General Toshevo (DAI). The experiment was designed by the split plot method in four replications, each of 12 m2. Four common winter wheat cultivars developed at DAI were tested – Iveta, Enola, Bolyarka and Dragana. The genotypic specificity of the investigated cultivars in the formation of total biomass during the vegetation period was determined. The new wheat cultivars Iveta, Enola, Bolyarka and Dragana formed different amounts of total biomass throughout the whole vegetation period. During most of this period the variations were significant, while at full maturity the deviations decreased. At all stages of its ontogenetic development cultivar Bolyarka formed highest amounts of total biomass. At the beginning of spring vegetation cultivar Dragana had lowest total biomass but at full maturity it accumulated dry matter at values approximating that of cultivar Bolyarka. The maximum of dry matter accumulation of cultivar Iveta was 20 days after heading, and if cultivar Enola – 30 days after heading.

Keywords: biomass; genotype; wheat

Date published: 2017-07-12