Genetic analysis of oil content in seeds of carriers of various sweet corn mutations

DOI: https://doi.org/10.7124/FEEO.v38.1810
Keywords: Zea mays L., endosperm mutations, oil content in seeds, genetic analysis

Abstract

Aim. Establishing the nature of inheritance on oil content in mature seeds of carriers of maize endosperm mutations su1, se1 and sh2. Methods. Genetic analysis of oil content was carried out in three diallel crosses schemes of the second Griffing method. The parental forms of the first scheme were 6 lines-carriers of the su1 mutation, the second scheme – 6 lines-carriers of the se1 mutation and the third scheme – 6 lines-carriers of the sh2 mutation. Analysis of oil content in seeds was carried out by the gravimetric method of S.V. Rushkovsky. Results. It was established that the inheritance of oil content in seeds of carriers of corn mutations su1, se1 and sh2 proceeds according by the types of incomplete dominance with a predominant contribution to the dispersion of additive effects or weakly expressed duplicative epistasis. The more higher oil content is regulated mainly by recessive alleles of the polygenic complex. Along with this, the oil content in sweet corn seeds is significantly dependent on the effects of monogenic mutations of the endosperm structure. Conclusions. The mutant maize genes su1, se1 and sh2 cause a significant increase in oil content in seeds compared to common corn. The effects of monogenic mutations of sweet corn can be enhanced by the effects of polygenic complexes.

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