Some examples concerning the meaning of notion "variety" and its role in the increasing of wheat productivity are covered in this article, Some historical aspects of the origin of this term and its use in the select ional work are given. At the example of varieties

The use of regression analysis for estimation of inbred lines is a breeding - oriented method, as it indicates scientifically grounded stages of the further breeding studying of these lines and a strategy of their use. Admissible levels of inbred depression of agriculturally valuable characters are limited in lines of the Verkhnyachka and Lgov geneplasms by two - three generations of self - pollinations, which testifies to the necessity "to keep" the characters of sufficient basis. Linearity of changes of values of the characters with the advancing of inbreeding shows the absence of epistasis or the weakness of their effects which makes suitable the use of an additive-dominant model for determining breeding-genetical value of inbred lines with the aim of their purposeful hybridization for obtaining genetically determined heterosis in F1.

Lettuce varieties selection for open soil conveyer breeding has to be carrying out with taking into account sort, maturity grade, terms of sowing and consumers demand on the fresh green products.

Scientific approaches to formation of national variety sources of spring and winter barley by State Registration of new varieties and their right protection.

Results of amino acids composition studying in savoya cabbage assortment are served. The best samples namely Vertyu 1340 (Rusiia) and hybrid Saha F1 (Netherlands) were selected.

Under contemporary weather conditions complex method for winter wheat selective material hardiness evaluation and accelerated of evaluation of drought- resistance, were offered.

Organizing measures in the scope of Ukraine are given, that provide the procedure of the state registration and their rights for fruit, berry, nuciferous species and vine. The expediency of the state registration of fruit and berry crops is grounded as a whole in Ukraine on the basis of the experience of the leading world’s countries. Powers of the State Service on Right Protection for Plant Varieties, Ukrainian Institute of Pant Variety Examination and Applicant were determined in the procedure of the registration of plant varieties and their rights for fruit, berry, nuciferous crops and vine.

It has been supposed to carry out bred-making valuation of wheat under native condition of protein substances and contents of the dough improvers (КВrO3, С6Н8О6) being practiced. It will allow both at present and in the future to carry out comparative valuation by this index between varieties of various breeding progenies.

Розглядаються питання зміни хімічного складу люцерно- злакових травосумішок залежно від способу сівби, видового складу й удобрення.

Open seeds - difficult (complex) biological system. The same plants gives seeds with different morphological indication (form, size, dyeing, weight 1000 seeds), anatomical and physiological properties. The physiological properties are correlation, state of quiet, influence on the anatomy construction and chemical composition of seeds lettuce Lactuca sativa L.