Вплив метеорологічних умов та місця вирощування на продуктивність міжвидових гібридів картоплі / Influence of meteorological conditions and the place of cultivation on productivity of interspecific hybrids of potatoes
Journal Title: Вісник Львівського національного аграрного університету. Агрономія - Year 2018, Vol 22, Issue
Abstract
One of the main disadvantages of most potato varieties is the low adaptive potential for manifestation of the main agronomic features. This explains the significant differences in their manifestation over the years, depending on the place of cultivation. To a large extent, due to the lack of source selection material with effective genetic control of adaptability. In this connection, 31 complex inter-species hybrids were tested, their backcross in two places: Sumy NAU - a zone of the northeastern forest-steppe of Ukraine and the Potato Institute – the Southern Polissya of Ukraine.The high potential of individual investigated samples for productivity was revealed, which was confirmed by the release of hybrids with a sign of more than 1000 g/nest. At the same time, this occurred only in 2016 under the conditions of the Institute of Potato and in 2017 – SNAU. Dedicated backcross 89.715s88, whose high productivity has been observed for two years: 2016 and 2017 and in unequal conditions (SNAU and IC), indicating its special value for practical selection.The greatest (36 %) share of influence on productivity of genotype hybrids was revealed. To a lesser degree, the meteorological conditions yielded 30 % for the effect on the expression of the indicator. Significantly less was the place of material testing and the interaction of factors. With respect to individual samples, their specific response to external factors is established. There was little impact on the performance of the test site in hybrids 89.715c88, 90.666/1 and 08.187/93. Minimum influence of meteorological conditions – 3 % was found in the backcross 90.673/30, although in five hybrids it exceeded 50 %. Despite the fact that on average the impact on the productivity of the interaction of the factors studied was relatively low – 17 %, numerous samples were selected, in which the value of this component of productivity was quite high. In 13 hybrids, the influence of the interaction of factors exceeded 50 %, and the minimum, within the limits of 22–25 %, it was in samples of 88.1425s1, 89.721s81 and 90.729/14.
Authors and Affiliations
N. Kravchenko, A. Podhaietskyу, V. Gordienko, L. Kryuchko
Keywords
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