Specifics of the key yield components manifestation in self-pollinated corn lines under different growing conditions

Journal Title: Plant varieties studying and protection - Year 2018, Vol 14, Issue 2

Abstract

Purpose. Assessment of the collection of early-maturing constant lines of ‘Ayodent’ germplasm in terms of the key indicators of yield components. Methods. Field, mathematical, and statistical. Results. Over the years of experiment, the ave­rage grain yield varied from 3.36 t/ha in 2014 to 4.24 t/ha in 2013. In 2015, the yield amounted to 3.63 t/ha. The maximum average yield was obtained from lines ‘DK555’ and ‘DK744’ (5.35 and 5.22 t/ha, respectively). Lines ‘DK237’ and ‘DK1274’ demonstrated the most stable grain yield over the years of research with the fluctuation of 0.33 and 0.36 t/ha, respectively, at a mean square deviation equal 0.06 t/ha. The variation coefficient of the yield components of self-pollinated lines ranged from 9.1% (number of kernel rows in an ear) to 13.2% (100-kernel weight). The average number of kernels in a row over the years of research was 18.3, with a range from 15.7 to 21.9, which was 11.6% less than in the standard line ‘DK744’ (20.7). The average grain yield amounted to 74.0% (with a range from 53.6 to 81.7%. The highest grain yield marked the following lines: ‘DK1274’ (79.6%), ‘DК213’ (79.9%), ‘DК744’ (81.2%), and ‘DК155’ (81.7%). The most stable in terms of 100-kernel weight were ‘DK216’ (24.1 g) and ‘DK237’ (27.0 g), with the mean square deviations () being 0.7 and 3.1, respectively. Close correlations between the grain yield, the number of kernels in a row and the grain output were found: 0.85 and 0.83, respectively. Conclusions. The maximum manifestation of grain yield sign was recorded in ‘DK555’ (5.35 t/ha) and ‘DK744’ (5.22 t/ha) lines; the number of rows in an ear ‘DK744’ (17.0) and ‘DK1274’ (15.5); the number of kernels in a row ‘DK555’ (21.9) and ‘DK744’ (20.7); 100-kernel weight ‘DK213’ (28.2 g) and ‘DK1274’ (27.7 g). The lines ‘DK1274’ and ‘DК237’ had the smallest fluctuation of grain yield over the experiment years (4.39 and 3.39 t/ha, respectively)

Authors and Affiliations

O. V. Abelmasov, A. V. Bebekh

Keywords

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  • EP ID EP326750
  • DOI 10.21498/2518-1017.14.2.2018.134771
  • Views 131
  • Downloads 0

How To Cite

O. V. Abelmasov, A. V. Bebekh (2018). Specifics of the key yield components manifestation in self-pollinated corn lines under different growing conditions. Plant varieties studying and protection, 14(2), 209-214. https://europub.co.uk/articles/-A-326750