Open AccessIdentification of drought resistance of winter bread wheat varieties and lines by vegetation and laboratory methods
Author(s) -
В. А. Лиховидова,
В. Л. Газе,
I. A. Lobunskaya
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/937/2/022117
Subject(s) - winter wheat , germination , horticulture , vegetation (pathology) , agronomy , yield (engineering) , biology , medicine , pathology , materials science , metallurgy
The article discusses the impact of severe drought on the growth and development of winter wheat plants. The studies were carried out in 2018-2020. As a starting material, we used 57 samples of winter soft wheat bred by ARC “Donskoy”. The studies were carried out under laboratory and vegetation methods. According to the analysis, it was revealed that the highest values of the index of complex resistance were shown by the samples: intensive type - 1630/17 (282.8 rel.units), 2078/16 (265.1 rel.units), 1990/17 (265, 0 rel.units); semi-intensive type -1727/17 (260.6 rel. units), 2243/17 (258.6 rel. units), 522/16 (252.8 rel. units). The maximum value of the degree of drought resistance of samples of the intensive type was noted for lines 2243/17 (92.4%), 1727/17 (84.9%), and 522/16 (82.6%). Among 36 samples of winter soft wheat of intensive type, high drought resistance was noted in 67% (24 samples) with germination from 71.6 (Univer) to 92.9% (1630/17). High values of heat resistance (I-81-100% of germination) out of 57 studied samples of winter wheat were noted in 56 genotypes, the indicators of which ranged from 85.1% (1181/16) to 98% (Zodiac, 1166/15, 1275/16). The highest grain yield under model drought conditions was noted for winter wheat varieties Zodiac (332.86 g/m2), Premiera (332.48 g/m2) and Podarok Krymu (317.50 g/m2), which is higher than the yield of the Ascet classifier (292.97 g/m2) by 8.0-13.7%..