Uman NUH | today: 06/24/2024

Morphological potential of the gene pool of radish

Author(s) Овчіннікова О. П., , ,
Category The Agronomy
year 2020 issue Issue number 97. Part 1
pages 260-268 index UDK 635.152:61.527
DOI 10.31395/2415-8240-2020-97-1-260-268 (Link)
Abstract The article presents the research of samples of the collection material of radish sowing Raphanus sativus L. Ukrainian and foreign selection of different ecological and geographical origin. Weather conditions during the research period (2015–2017) were characterized by a high variability of hydrothermal conditions, which manifested itself in the lack of moisture at different stages of ontogenesis of the.radish. Subsequently, the uneven amount of precipitation during the growing season led to a decrease in yield and a change in the biometric indicators of the rosette of leaves and root crops. As you know, varieties of radish Raphanus sativus L. are complex populations with a variety of genetic material, especially in terms of quantitative characteristics. The quantitative traits of a plant organism are subject to strong modification variability, which is the main obstacle to increasing the efficiency of selection of the required selection genotypes. One of the criteria for the variability of quantitative traits is the coefficient of variation (V, %). This statistical indicator allows one to obtain information about the characteristics of the reaction rate of various quantitative traits of a plant, while ensuring the comparability of the results obtained. The conducted studies of biometric indicators of sowing radish made it possible to analyze the variation of its main quantitative characteristics. In the course of the research, a description of the variability of the morphological characteristics of the samples of sowing radish of various breeding and geographical origin was carried out. The revealed features make it possible to analyze the nature of variability of quantitative traits and contribute to the widespread involvement of the best varieties in the breeding process as donors of valuable traits. According to the research results, it was allocated for mechanized harvesting on the basis of the «smallest rosette of leaves» varieties of sowing radish: 18 days (Russia) a variety of pink-red with a white tip and a cylindrical root crop, Zarya (Russia) — a dark red variety with a rounded root crop, Duet (Italy) is a pink-red variety with an oval root crop. And also varieties White cylindrical and Ice icicle — a variety of white cylindrical Ukrainian selection. During the study, it was found that the size of the root crop is controlled by the genotype, but its formation is more dependent on external environmental factors. For selection according to the parameter «length of the root crop», the following samples were selected: 18 days (Russia) and White brekfast (Germany), according to the «width of the root crop» — Belaya (Czech Republic), Zhara (Netherlands)
Key words radish, morphotype, gene pole, leaf blade, coefficient of variation
Download    (Total: 220)