The efects of heterosis of the sorghum hybrids F1 based on cytoplasmic male sterility

Currently, the development of highly productive sorghum hybrids with a high content of the main nutritional components in grain is of great relevance. The current paper has presented the estimation results of the effects of true and hypothetical heterosis on percentage of protein, oil and starch in grain of the first-generation hybrids. There have been analyzed 54 combinations obtained on the basis of three CMS-lines and 18 pollinators. The components of the hybrids and their progeny were grown on the FSBSI RosNIISK “Rossorgo” experimental plots of 7.7 m2, in triple sequences with plant density of 100 thousand plants per ha. The biochemical composition of the grain was determined by the SpectraStarXT infrared analyzer. The parental components and their progeny differed in the biochemical composition of grain, which was confirmed by the analysis of variance. There was identified a slight variation of the ЗерновоехозяйствоРоссии № 2(68)’ 2020 50trait ‘starch content’ in maternal and paternal forms of the hybrids F1(V= 2.5–8.3%). There was identified an average variability of protein percentage in the initial forms (V= 7.9–14.6%) and a weak variability in hybrids (V= 9.1–10.8%). There were identified larger values of variation of oil content (9.0–17.2%). The manifestation frequency of true and hypothetical heterosis of protein percentage was identified in 31.5–62.9% and 44.4–79.6% of hybrids; of fat content was identified in 20.4–57.4% and 20.4–75.9% of hybrids; of starch content was identified in 16.6–33.3% and 16.6–44.4% of hybrids. A focused approach in breeding the varieties with the improved biochemical components of grain allowed us to identify 9 combinations characterized by the annual effect of heterosis in protein content (4 combinations), in raw oil accumulation (2 combinations) and in starch accumulation (3 combinations).

1. Guzhov Yu. L., Fuks A., Valichek P. Selektsiya i semenovodstvo kul’tiviruemyh rastenii [Breeding process and seed production of cultivated plants]. M., 1999, 536 s.

2. Dospehov B. A. Metodika polevogo opyta (s osnovami statisticheskoj obrabotki rezul’tatov issledovanij) [Methodology of a feld trial (with the basics of statistical processing of research results)]. М., 2011. 352 s.

3. Kibalnik O. P., Efremova I. G., Semin D. S., Gorbunov V. S., Kameneva O. B., Starchak V. I., Kukoleva S. S. Оtsenka kachestva zerna I biomassy sorgo s tsel’yu ispol’zovaniya v kormoproizvodstve [Estimation of the sorghum grain and biomass quality for use in feed production] // Zernovoe hozyajstvo Rossii. 2019. № 4. S. 3–7.

4. Kibalnik O. P., Bychkova V. V., Peshkova V. O., Elkonin L. A. Pitatel’naya tsennost’ zerna gibridov F1 i roditel’skih form sorgo [The nutritional value of grain hybrids F1 and parental forms of sorghum] // Aktualnye problemy zhyvotnovodstva, veterinarnoy meditsiny, pererabotki s.-h. produktsii i tovarovedenie: mat. mezhdunar. nauch.-prakt. konferencii. Voronezh: FGOU VPO VGAU, 2010. S. 213–216.

5. Kovtunov V. V., Kostylev P. I., Kovtunova N. A. Zakonomernosti nasledovaniya syrogo belka v zerne gibridov F1 –F2 sorgo zernovogo [Patterns of inheritance of raw protein in grain sorghum hybrids F1, F2] // Agrarnyi vestnik Urala. 2014. № 9(127). S. 9–13.

6. Kosareva N. A., Vasil’ev А. А., Gogolkin А. А. Ispol’zovanie zernovogo sorgo v industrial’nom rybovodstve [The use of grain sorghum in industrial fsh farming] // Аgrarnyi nauchnyi zhurnal. 2014. № 2. S. 15–18.

7. Metlina G. V., Kovtunov V. V., Lushpina O. A., Vasil’chenko S. A. Produktivnost’ i energeticheskaya efektivnost’ vosdelyvaniya sortov sorgo zernovogo [Productivity and energy efciency of cultivating grain sorghum varieties] // Zernovoe hozyajstvo Rossii. 2016. № 3. S. 54–57.

8. Cheprasova O. V. Povyshenie yaichnoy produktivnosti kur-nesushek pri ispol’zovanii v racionah sorgo i nuta [Improvement of egg productivity of hens fed with sorghum and chickpea] // Izvestiya Nizhegorodskogo agrouniversitetskogo kompleksa: nauka i vysshee professional’noe obrazovanie. 2011. № 1(21). S. 139–143.