MORPHOLOGICAL MARKERS OF COMMON WINTER WHEAT (TRITICUM AESTIVUM L.) UNDER CONDITIONS OF SOWING IN DECEMBER

Bogdan Bonchev

Abstract


The purpose of the present study is to determine the effect of sowing period on morphological markers of common winter wheat cultivars and the relationship with the elements of seed production. The survey period covers the vegetative 2017/2018 to 2018/2019 years.

The purpose of the present study is to determine the effect of sowing period on morphological markers of common winter wheat varieties and the relationship with the elements of seed production, in conditions of climate change.

The first year of the survey is more rainy. The second year is characterized by a lack of rainfall during the winter, early spring drought and high summer average monthly temperatures. In June 2019 nature of rainfall was a natural disaster.

Vegetable material for the study is the cultivars of common winter wheat Pobeda and Boryаna. The following analyzes were performed: variation analysis, indicator of accuracy, analysis of the variance of the studied traits, the power of influence of the factors was calculated, correlation analysis, multiple step regression analysis and homogeneity test of cultivars.

Seed production in common winter wheat, Boryana cultivar, with sowing in December in the particular experimental setting is formed mainly by the number of productive tillers per m².The seed yield of the Pobeda cultivar under sowing conditions in early December is mainly based on the strong positive correlation with the number of kernels per spike and the weight of kernels in spike.

It is confirmed that the length of the spike is appropriate for the morphological marker of the cultivars examined under sowing conditions in December, and an additional marker may be used for a weight of 1000 kernels.

Keywords


wheat cultivars, seed yield, sowing in December, morphological markers

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