Alekseychenko N. Biological ground of breeding of mulberry (Morus L.) and increase of its productivity in conditions of Ukraine.

The object - fodder and experimental plantations, collection fund, nursery trees plantation, selection nursery of a mulberry. The purpose to develop methodological bases of selection of a mulberry (Мorus L.) and to create new high productivity sorts with high fodder quality of lives, resistance to the basic activators of diseases and to adverse climatic conditions for different directions of use. The methods - selection, physiological, biochemical. The novelty - complex system of methods of mulberry selection for an estimation of an initial material on resistance to the basic activators of diseases and to adverse climatic conditions was developed for the first time. High efficiency of use of thermal testing method at a stage of mulberry seeds was proved. Use of a heat-resistant parameter of mulberry sorts for an estimation of their winter resistance and diagnosing of heterosis effect at hybrids was recommended for the first time. The scale of an estimation of resistance to wilt activators of mulberrieson parameters of an anatomic structure of its wood was developed. Morphological, phenological, biological features of 100 sorts and forms of a mulberry of collection fund of Sericultural Institute was determined. It is deduced and zoned six mulberry sorts with high genetic potential on efficiency and its stable realization. The Methods of State testing of mulberries on fruit yield capacity was developed and authorized by State commission on protection of the rights to sorts of plants. The way of increase of productivity of mulberry leaves and its fodder quality with use of the bacterial fertilizers created on the basis of effective nitrogen fixing bacteria of a mulberry was developed. Results of researches - are used in selection practice with a mulberry and technological process of its cultivation. The branch - sericulture.