Creating Tetraploid Lines of Sweet Corn (Zea Mays Saccharata) and Studying Biochemical Content of Their Grain
A collection of tetraploid sweet corn has been created on the basis of Baksanskaya Sugary var. (VIR catalog no. k-23426) obtained from dent corn tetraploid population MRPP-20 characterized with high grain yield of its ear. The variety has been created by inbreeding separate caryopses homozigotic for su1 and su2 genes (sugary endosperm); the caryopses were selected from MRPP-20 population with subsequent selection work for valuable traits during a number of generations. The collection includes over 300 specimens, among them there are genotypes promising for selection of foodcrop sweet corn. The research was conducted into principal phenotypic traits of the plant and chemical components of its caryopsis (protein, starch, oil). Analysis has shown that the chemical composition of grain varies widely. Structural phenotypic traits of vegetative organs differ mainly in the number of ears per plant, ear size, number of seeds per ear and the number of seed rows, caryopsis length, color of corncob and the caryopsis itself. Specimens with high (17.0–18.0 %) and low (11.0–12.0 %) protein content, high (9.0–10.0 %) and low (5.0–6.0 %) oil content, high (66.0–67.0 %) and low (60.0–61.0 %) starch content in caryopses were produced. Specimens have been obtained that combine high starch content with low oil content (C-1042) and vice versa (C-1114, C-1116), with low protein and oil content in a combination with high starch content (C-1180, C-1370). The research results allowed choosing starting material for selection work with hybrids of sweet corn to get predefined flavor properties.
 Spaar, D. et al. (2008). Grain Crops. Growing, Harvesting, Processing, Use. Moscow: DLV AGRODELO, 656 p.
 Expert analytical center of agribusiness. Retrieved from: www.ab-centre.ru
 Alto consulting group. Retrieved from: http://alto-group.ru
 Goncharov, N.P., Shumnyi, V.K. (2008). From preservation of genetic collections to creation of national system of plant genetic resources storage in permafrost. Annals of VOGiS, vol. 12, no. 4, pp. 509–523.
 Bordallo, P. do N., Pereira, M.G., De Amaral jr., A.T., Gabriel, A.P.C. (2005). Analise dialelica de genotipos de milho doce e comum para caracteres agronomicos e proteina total. Hortic. Brasil, vol. 23, no. 1, pp. 123–127.
 Revilla, P., Velasco, P., Vales, M.I., Malvar, R.A., Ordas, A. (2000). Cultivar heterosis between sweet and Spanish field corn. J. Am. Soc. Hortic. Sc., vol. 125, no. 6, pp. 684–688.
 Hulbert, S.H. (2000). Drake Rust-resistant sh2 sweet corn populations. HortScience, vol. 35, no. 1, pp. 145–146.
 Malvar, R.A., Cartea, M.E., Revilla, P., Soengas, P., Oredas, A. (2004). Verification of predictions from estimators of favorable alleles to improve yield of sweet com hybrids. Maydica, vol. 49, no. 1, pp. 49–55.
 Nigussie, M., Saleh, G. (2005). Genetic improvement for yield and yield related traits by introgressive hybridization in sweet corn. Korean J. crop sc., vol. 50, no. 2, pp. 91–96.
 Novoselov, S.N. (2007). Screening of sweet corn selection vectors. International Agricultural Journal, no. 2, pp. 62–63.
 Novoselov, S.N. (2007). Modern situation in production and processing of sweet (vegetable) corn worldwide. Storage and Processing of Agricultural Produce, no. 12, pp. 12–17.
 Zan, G.-H., Brewbaker, J.L. (1999). Seed quality of isogenic endosperm mutants in sweet corn. Maydica, vol. 44, no. 4, pp. 271–277.
 Sitnikov, M.N. (2003). Genetic analysis of sweet corn mutant lines. Current issues in Genetics, vol. 1, pp. 230–231.
 Sitnikov, M.N. (2006). Genetic analysis of sweet corn mutant lines. Master's dissertation thesis. St. Petersburg: VIR, 21 p.
 Khatefov, E.B., Shcherbak, V.S. (2002). Cytogenetic studies of tetraploid maize. Annals of Kabardino-Balkar State University, iss. 5, ser. Biological Sciences. Nalchik, p. 161–169.
 Shelenga, T.V., Soloveva, A.E., Shevarda, A.L., Konarev, A.V. (2014). Studying metabolom of cultures in the collection of N.I. Vavilov Research Institute of Plant Industry (VIR). Collected in: Plant genetic resources as a foundation of food security and improvement of quality of life, Proceedings of International Scientific Conference dedicated to 120th anniversary of VIR, pp. 98. St. Petersburg.
 Pausheva, Z.P. (1970). Hands-on Workshop in Cytology. Moscow: Kolos, 255 pp.
 Khatefov, E.B., Novoselov, S.N. (2011). Biochemical content of seeds of tetraploid sweet corn. Annals of the Russian Academy of Agricultural Sciences, no. 4, pp. 40–42.