Open AccessESTIMATION OF STABILITY OF SPRING BARLEY VARIETIES (Hordeum vulgare L.) IN MODERN CLIMATIC CONDITIONS OF THE ARKHANGELSK REGION
Author(s) -
О. Б. Батакова,
О. Б. Батакова
Publication year - 2019
Publication title -
adaptivnoe kormoproizvodstvo
Language(s) - English
Resource type - Journals
ISSN - 2222-5366
DOI - 10.33814/afp-2222-5366-2019-3-35-47
Subject(s) - hordeum vulgare , yield (engineering) , mathematics , agronomy , stability (learning theory) , spring (device) , drought stress , cultivar , biology , poaceae , engineering , mechanical engineering , materials science , machine learning , computer science , metallurgy
The long-term dynamics of the main meteorological indicators is analyzed, their compliance with the requirements of growth and development of promising varieties of barley is established. Over the past 19 years, there has been an upward trend in temperature and precipitation over all months during the growing season. The significant effect of the sum of effective temperatures and hydrothermal coefficient on the yield formation of the studied barley varieties was established. The data obtained indicate the need to create varieties that are more resistant to high temperatures. Under changing meteorological conditions, important indicators of varieties are their resistance to stress conditions of growth (U2 – U1) and genetic flexibility of the variety (U1 + U2)/2. In our experiments established that the high stress resistance have varieties of Dina and Kotlasskiy; the increased genetic flexibility was highest in the varieties Kotlasskiy and Tausen'. The lowest coefficient of variation (V) was observed in Kotlasskiy variety, the most high — variety Vard. The highest stability index and index of the level of stability of the yield of the variety were noted in the Kotlasskiy variety.