Uman NUH | today: 04/14/2024

Analysis of economic value characters of the created lines of corn with erectoid placement of leaf plates

Author(s) Ryabovol L.O., Doctor of Agricultural Sciences, Professor, Professor of Department of Genetics, Plant Breeding and Biotechnology, Uman National University of Horticulture, Ukraine
Білокур Ю. В., , ,
Category The Agronomy
year 2022 issue Issue number 101. Part 1
pages 86-93 index UDK 631.52:633.15
DOI 10.32782/2415-8240-2022-101-1-86-93 (Link)
Abstract The article presents the results of the analysis of economically valuable traits of experimental lines of corn with erectoid arrangement of the leaves of the selection of Uman NUH. Materials with different growing seasons have been created and selected. The research was conducted during 2020–2022. Maize samples were sown in the breeding plots of the Department of Genetics, Plant Breeding and Biotechnology of the Uman National University of Science and Technology. Sowing was carried out manually in a square-nest method with the placement of plants 70 × 70. The registered area of the plot is 4.41 m2. Variants in the experiment were placed by a systematic method in three repetitions. Seven created corn lines 5540, 5576, 5584, 5588, 5592, 5596, 5628 of the C-type with an erectoid placement of the leaf blade were analyzed. Lines obtained by controlled inbreeding and selection from hybrids Canada, Furio, DKS3795, LG 23.06. It has been confirmed that if the length of the growing season increases, the number of leaves on the stem and the yield of corn increases. The analysis of the elements of the structure of the cob productivity showed that the line 5628 had the maximum length of the cob - 18.6 cm (Table 3), and the line 5540 had the smallest length (12.4 cm). The indicator "cob diameter" is an invariable feature and is a genetically determined factor. The largest cob diameter of 4.2 cm was recorded in line 5628, and the smallest was 2.9 cm in line 5540. The largest recorded stem diameter was line 5596 (2.5 cm), and the smallest - lines 5540 and 5576 (1.9 cm). The analysis of the morphobiological indicators of the created lines of corn with an erectoid placement of the leaf plate allowed to classify them according to maturity groups into middle (lines 5540, 5576), mid-late (lines 5584, 5588, 5592, 5596), and late (line 5628). Lines 5596 and 5628 were identified, which can serve as donors of erectoid genes and a number of economically valuable traits for the creation of high-yielding corn hybrids.
Key words maize, erectoidity, experimental line, sterility, growing season, crop structure
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