Труды Кубанского государственного аграрного университета


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2018, № 74

UDC: 633.1163249:631.527
GSNTI: 68.35.03

Comparative assessment of the potential hroductivity of the winter soft wheat varieties, recommended for cultivation in different years, on the parameters of plasnicity and yield stability

The paper discusses the results of the research on soft winter wheat connected with the 2003-2014 studies of yield variability, depending on the year conditions and the variety. The objects of the research were 34 varieties included into the State register of breeding achievements in different years and recommended for cultivation. The experiment was carried out on the predecessor of soybean on the medium background of soil fertility. The varieties were being cultivated both with the protection against fungal diseases and without it. The method of dispersive and variance analysis was used in mathematical processing of the yield data. The parametres of ecological plasticity (bi) and yield stability (S2) have been calculated according to the methodology of E.A. Eberhardt and U.A. Russell (1984). The range of variability has been defined according to V.A. Zykin (2000), the fulfillment of the yield potential has been set according to E.D. Nettevitch (2001). The research revealed that the new winter soft wheat varieties included into the State register of breeding achievements are mostly productive and adaptive. Their yielding capacity increases mainly due to the upper threshold. The new varieties differ in yield stability but no regularity has been found. In conclusion it must be noted that the implementation of Eberhardt and Russell model in analyzing yield data allows us to estimate general tendencies in its variation when the conditions of the environment change and to identify the most valuable genotypes. In order to rank genotypes according to the characteristics which are being studied we have to choose the agricultural background on which their maximum potential is realized.
Keywords: Variety, soft winter wheat, variability, ecological plasticity, realization of the potential, productivity
DOI: 10.21515/1999-1703-74-33-40

References:

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Authors:

  1. Efremova Valentina Vasilievna, PhD in agriculture, professor All-Russian Atestation Commission, Federal State Budgetary Educational Institution of Higher Education “I.T. Trubilin Kuban State Agrarian University”.
  2. Samelik Elena Grigor'evna, PhD in of Biological Sc., associate professor, Federal State Budgetary Educational Institution of Higher Education “I.T. Trubilin Kuban State Agrarian University”.
  3. Lagoyda Temofey Vladimerovich, PhD in agriculture, associate professor, Federal State Budgetary Educational Institution of Higher Education “I.T. Trubilin Kuban State Agrarian University”.