EVALUATION OF FLAX (Linum usitatissimum L.) GENOTYPES ON ENVIRONMENTAL ADAPTABILITY AND STABILITY IN THE NORTH-EASTERN BELARUS

Abstract

A b s t r a c tFlax is the only industrial crop cultivated in Belarus for fiber on the area over 50 thousand ha. An environmental adaptation is of special interest for innovative flax varieties. We focused on selection of genetic sources of adaptability and stability and the search for environmentally adapted genotypes among the extensive flax hybrids. For this, we have studied a response of the parent forms and 36 hybrid populations of fiber flax to abiotic factors and estimated the influence of environment on economically important traits. The field trials (Orshanskii Region, Belarus, 2012 to 2014) were carried out under weather conditions which varied in precipitations (16.7-27.1 mm) and daily air temperature (12.4-16.4 С). Plant height, stem technical length, weight, and fiber content were studied in 10 parental varieties different in geographic origin (i.e. derived from Belarus, Russia, France, Ukraine, Lithuania), and also in their combinations. Morphological and biological screening identified 11 early ripening combinations, 15 forms with tall stem, 10 forms with a significant technical stem length, 4 ones with high stem weight, and 3 ones with high fibre content. Keywords: flax, varieties, hybrids, environmental adaptability, stability, productivity Nowadays, the fiber flax selection is focused on improving resistance to biotic and abiotic factors while preserving the high productivity and quality of the feedstock. The main method in generating the parent material is still the intravariety hybridization which allows combining important traits of parents [1].In the literature, there is sufficient information on the environmental study of varieties and hybrids of many crops, such as grains [2][3][4][5][6][7], corn [8,9) [19]. At the same time, there are extremely little papers dedicated to the environmental assessment of samples,

Adaptive ability of agricultural plants in extreme conditions of the Northern Trans-Urals

“…На основе многолетних исследований генетического разнообразия Hordeum vulgare L., Linum ussitatisimum L., Triticum aestivum L. в различных условиях выращивания с помощью дисперсионного анализа (ANOVA) определена доля отдельных факторов в общей фенотипической изменчивости признаков. Установлена реакция 36 гибридных форм льна на абиотические факторы внешней среды, влияние которых наиболее ярко проявилось на признаках высоты растений, технической длины стебля и содержания волокна (Korolev & Bome, 2017).…”

“…Исследование 146 образцов ячменя, и четырёх гибридов (F 4 , F 5 ) яровой пшеницы в трех экологических пунктах России и Германии показало, что значительная доля изменчивости полевой всхожести семян, биологической устойчивости и выживаемости растений обусловлена взаимодействием факторов «генотип×среда». Почвенно-климатические условия наибольшее влияние оказали на высоту и семенную продуктивность растения, генотип ячменя влиял на массу 1000 семян (Ripbergeret et al, 2016a,b;Tetyannikov, 2019;Korolev & Bome, 2017).…”

Influence of Weather Conditions in the Northwestern Russian Federation on Flax Fiber Characters According to the Results of a 30-Year Study

“…The analysis of variance carried out for many characters, including the number of days before maturation and plant height, showed a high significance of the interaction between the genotype and the place of cultivation [ 25 ]. The weather conditions in different years had a significant influence on the fiber quality characters [ 26 ] and plant height [ 27 ]. The combined effect of various factors on flax yield was demonstrated in field conditions.…”

Screening of accessions from fiber flax collection by productivity and their adaptability to the conditions of the North-West region of Russia

“…Важная роль в решении данной задачи принадлежит генетическому разнообразию культуры, сосредоточенному в мировых коллекциях ФГБНУ «Федеральный исследовательский центр Всероссийский институт генетический ресурсов растений имени Н. В. Вавилова» (ВИР) и ФГБНУ «Федеральный научный центр лубяных культур» [5,8]. Использование различных подходов и методов позволило выявить генотипы льна, устойчивые к различным флуктуациям погодных условий [9,10,11]. Информация о реакции образцов на изменения условий среды является важнейшим рычагом повышения урожаев сельскохозяйственных растений [12].…”