Published in Scientific Papers. Series A. Agronomy, Vol. LXVI, Issue 1
Written by Evgeniy DIMITROV, Zlatina UHR, Rangel DRAGOV, Radoslav CHIPILSKY, Teodora ANGELOVA
The experiment was conducted in the experimental field of IPGR - Sadovo in the period 2018-2020. Biometric analysis was performed on the sixteen old varieties of common winter wheat created in IPGR. The following traits were taken: yield, productive tillering, central spike length, spikelets number in centaral spike, grains number in central spike, grain weight in central spike, grains number in other spikes, grains weight in other spikes, grains number of 1 plant and grains weight of 1 plant. The data are processed by statistical methods – variance (ANOVA), variation and principal component analysis. The results show that the influence of the genotype and the interaction of the genotype x environment was proved in all the monitored traits. In terms of traits, the influence of the environment is unproven only in 3 traits – grains weight in 1 plant, grains weight in the other spikes and spikelets number in the central spike. The aim of the study is to test the effect of climate change on the structural elements of the yield of old varieties of common winter wheat, as the main food crop.
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