Visn. Hark. nac. agrar. univ., Ser. Biol., 2017, Issue 2 (41), с. 85-91


https://doi.org/10.35550/vbio2017.02.085




OIL CONTENT AND FATTY ACID COMPOSITION IN THE GRAINS OF MAIZE ENDOSPERMIC MUTANTS


D. S. Tymchuk1, V. V. Muzhilko2, D. А. Demchenko2

1Kharkiv State Veterinary Academy
(Kharkiv
region, Ukraine)
E-mail:
dstymchuk@yahoo.com
2Research Breeding and Geneics Station «NASCO»
(Kherson region, Ukraine)


Effects of the maize endospermic mutations on the oil content and fatty acid composition were determined in three-year experiments. It were established that these mutations usually increases grain oil content and mutations sh2, se and su1 were notable as having its highest levels. Increasing of oil content in the grains of endospermic mutants was ensured by the cumulative effect of increasing the proportion of germ and oil content in the germ. The carriers of mutations se and su1 had the increased content of oleic acid glycerides in the oils and the mutants sh2 – and glycerides of saturated acids too. It is assumed that the increase in the share of the embryo in the grain of the carriers of maize endospermic mutations is the result of their pleiotropic effects, and the increase of germ oil content and changing of the oil fatty acid composition – the result of spatial linkage of genes of endosperm structure with the genes controlling the grain lipid composition.


Key words: Zea mays, endospermic mutants, grain oil content, oil fatty acid composition

 


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