Ecological plasticity of buckwheat varieties (Fagopyrum esculentum Moench.) Of different geographical origin according to productivity
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Kuupäev
2020
Kättesaadavus
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Kirjastaja
Abstrakt
To determine the ecological plasticity of crop varieties, there are a number of
methods that are based on the analysis of the variability of the trait by contrasting years under the
conditions. The stability and plasticity of the studied traits of varieties are due to the ability of
genetic mechanisms of plants to minimize the consequences of the negative impact of the
environment, that is, to resist them. The researches on establishing regularities of manifestation
of plasticity, stability and homeostaticity of buckwheat varieties of different ecological and
geographical origin were carried out in the conditions of the central part of Ukraine during the
period of 2016–2018. The low adaptability of modern buckwheat varieties is a determining factor
for low production yields of potentially high-yielding varieties in the sharply contrasting (climatic
factors) cultivation conditions. The level of yield (as a complex characteristic) and its main
component, the individual productivity of the plant have been determined as the differentiative
indicators of modern varieties and new promising breeding material consisting of 35 samples
from 5 countries of the world. The analysis of research data has identified a group of varieties
(SYN 3/02, Sofiia, Selianochka, Slobozhanka, Yelena, Roksolana, Populiatsiia 7/07, P-330,
P-455, P-620, Ametist, Feniks, Ilishevskaia, Batyr and Arno), which have a value as a highly
adaptable varietal material for the cultivation conditions and have an increased selective value
according to abiotic adaptability indicators and can be used to create a more adaptable material
as a potentially more productive as well as more plastic and stable resource for selection.
Kirjeldus
Märksõnad
buckwheat, yield, plasticity, homeostaticity, stability, breeding value, articles