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The efficiency of using different criteria for assessing

Author(s) Kotsyuba S. P., Candidate of Agricultural Sciences, , Uman National University of Horticulture
Білокур Ю. В., , ,
Category The Agronomy
year 2023 issue Issue number 102. Part 1
pages 215-222 index UDK 631.527.5
DOI 10.32782/2415-8240-2023-102-1-215-222 (Link)
Abstract In our experiments, an analysis of heterozygous hybrids of corn was carried out according to the main economic and valuable characteristics and the manifestation of the level of correlation coefficients between certain elements of the crop structure. As a result of the research, it was established that the maximum grain yield of 14.5 t/ha was obtained for growing corn for grain among the 344 × 433 and 427 × 225 hybrids. The hybrids, as well as having a high moisture content, were characterized by an extended vegetation period, in particular the MAS 23M and 442 × 48, 294 × 331 hybrids. According to the indicators of damage by the corn moth and damage to corn by the blistering soot, all the studied hybrids outperformed the standard. Damage to the plants did not significantly affect the yield, which makes it possible to characterize the obtained materials as resistant to certain pests and diseases. According to the results of the analysis of the peculiarities of the manifestation of the main economic and valuable traits and the determination of the correlation coefficient between them, it was established that the correlation coefficient between the yield and individual elements of the crop structure in heterozygous corn hybrids is positive and is at the level of weak, as the mass of 1000 grains (0.04–0.06) to strong (r = 0.62–0.69) cob mass. The obtained data confirm that the length of the cob has a close relationship with the number of grains in a row (r = 0.36–0.39), since this indicator significantly affects the yield. The conducted analysis of the correlation dependence of yield on the number of grains in a number of corn hybrids showed that the correlation coefficients were insignificant and statistically
Key words heterozygous hybrids, corn, grain moisture, productivity
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