ESTIMATION OF HETEROSIS BY THE BASIC MORPHO-BIOLOGICAL CHARACTERISTICS AND PROPERTIES OF F<sub>1</sub> HYBRIDS OF GRAIN SORGO
The results of studies on various types of heterosis in F1 hybrids of grain sorghum conducted in 2014-2016 by morphological characteristics and grain yield are submitted in the article. The hybrids F1 of grain sorghum, which showed true heterosis and hybrids, which surpassed the standard variety in many ways and demonstrated competitive heterosis, have been identified. True heterosis by the grain yield indices was achieved by hybrids Perspective 80С×Ludmila 107 - higher than the parental indices by 47.5%; Brown 11С×Ludmila 107 - higher by 35.5%; Spark 2С×Grit 10 - higher by 32,8%; Spark 2C×Grain 10 higher by 32.8%. The greatest effect of transheterosis was observed in hybrids Iskra 2С×Krupinka, Perspective×Lyudmila 107, Brown 11С×Lyudmila.