Yes'kova O. Anatomic, morphological and genetical features of corn heterosperm parameters and their use in selection and seed-growing

The object is anatomic and morphological features of seeds in connection with their biological properties and character of attrib-ute inheritance "spatial orientation of a germ" in a number of generations. The purpose is to study both, anatomic and morphological genetic features of heterospermy and its connection with biological seed properties of Dneprovskiy 310 MV corn three-year hybrid and its parental forms. Methods - general scientific (supervision, measurements of biometric parameters. comparative analysis) and special (field, laboratory, laboratory-field and statistical analysis of the given experiments). Results - researches on points of anatomic, morphological and genetic features of heterospermy on three genetic forms of corn: pure self-pollinated line DS-103 MV, simple interline hybrid Dneprovskiy 25M and three-linear interline hybrid of Dneprovskiy 31O MV corn are carried out for the first time; the technique of germ separation from an endosperm at corn is advanced; distinctions on separateelements of heterospermy of different genetic forms of corn are displayed; positive correlation between the form of sowed seed and efficiency of plants in offspring as at the threefold interline hybrid, as at its parents is established; it is established, that at all genetic forms of corn the highest fruitful properties have seeds with central (S-form) and right-hand (D-form) arrangement of germs; it is proved, mat distinctions on efficiency of plants in connection with different spatial orientation of germs at sowed seeds are kept during three generations. Sphere of application is the estimation of anatomic, morphological and biological properties of seeds in seed growing and selection of corn.