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.

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.

In clause the role and development of the Ivanovo skilled - selection station, as research establishment is determined. A creative way founder of selection work on sugar beet and grain cereals of Boris Nikolayevich Lebedinskiy, outstanding scientific, large connoisseur of a technique of research work, creator of an agricultural science also is directly opened.

In clause the role and development of the Ivanovo skilled - selection station, as research establishment is determined. A creative way founder of selection work on sugar beet and grain cereals of Boris Nikolayevich Lebedinskiy, outstanding scientific, large connoisseur of a technique of research work, creator of an agricultural science also is directly opened.

The system of accelerated seed reproduction for new variety of winter wheat Krizhinka, and its application into production during years 1997-2000, are adduced in the article. Application of this system allowed in year 2000 to grow about 20 thousands metric centner of original seeds, and to increase the planted area at the time of including of the variety to State Register of Plant Varieties of Ukraine till 50 thousand he.

The system of accelerated seed reproduction for new variety of winter wheat Krizhinka, and its application into production during years 1997-2000, are adduced in the article. Application of this system allowed in year 2000 to grow about 20 thousands metric centner of original seeds, and to increase the planted area at the time of including of the variety to State Register of Plant Varieties of Ukraine till 50 thousand he.

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.

Мета. Комплексне вивчення, добір, оцінювання й систематизація самозапилених ліній кукурудзи звичайної (Zea mays L.), отриманих на базі матеріалу різної генетичної структури з кременистим та зубоподібним типом ендосперму, за основними господарсько-цінними показниками й ознаками скоростиглості з метою виділення найліпших генотипів для селекції ультраскоростиглих гібридів. Методи. Гібридизація, інцухт – у процесі створення вихідного матеріалу; візуальний – фенологічні спостереження; лабораторно-польовий – визначення морфо-біологічних ознак самозапилених ліній кукурудзи; вимірювально-ваговий – визначення врожайності та метричних ознак рослин; математично-статистичні – визначення достовірності результатів, показників варіабельності ознак, кореляційної залежності ознак; дисперсійний аналіз; комплексне оцінювання морфо-біологічних та господарсько-цінних характеристик самозапилених ліній кукурудзи найпоширеніших зародкових плазм. Результати. У результаті оцінювання самозапилених ліній кукурудзи, створених на базі різних зародкових плазм, установлено, що найвища врожайність зерна за обох строків сівби притаманна лініям від зародкової плазми Iodent; мінімальну збиральну вологість зерна мали лінії зародкових плазм Flint та Mix; найменша середня тривалість періоду сходи–цвітіння (50% чоловічих та жіночих суцвіть за обох строків сівби) властива лініям зародкової плазми Flint; стабільно високі значення показника «висота рослин» за оптимального строку сівби характерні для ліній кукурудзи змішаної зародкової плазми Mix, за пізнього строку – для ліній плазми Iodent. Стабільно високі значення показника «висота прикріплення качана» за обох строків сівби відзначено в ліній, які створені на основі плазми Iodent. Висновки. Лінії ДК239 (плазма Flint), ДК7174, ДК2285, ДК305, ДК2613 і ДК5568 (плазма Iodent), ДК2332 та ДК2659 (плазма Mix) були найбільш скоростиглими та найліпшими за комплексом господарсько-цінних ознак. Вони є перспективними для використання в селекції ультраскоростиглих гібридів кукурудзи, адаптованих до умов Степу України

Variations in bread volume output in accordance with external temperature factor which balancing increases obtained information reliability are considered.

Variations in bread volume output in accordance with external temperature factor which balancing increases obtained information reliability are considered.

In the article the importance of the creation of the State Service on Right Protection for Plant Varieties as Governmental body of the state management in the sphere of right protection for plant varieties was grounded, as well as strategic tasks and ways for development of this Service. The main principles for the realization of the national policy in the sphere of the right protection for plant varieties according to the international requirements are formed.

In the article the importance of the creation of the State Service on Right Protection for Plant Varieties as Governmental body of the state management in the sphere of right protection for plant varieties was grounded, as well as strategic tasks and ways for development of this Service. The main principles for the realization of the national policy in the sphere of the right protection for plant varieties according to the international requirements are formed.

It is presented brief description of Wild Strawberry varieties included to State Register of Plant Varieties, which are applied for extension in Ukraine in 2006, as well as morphological and biological features of the plant and its value.

Purpose. Providing information on the formation, composition, maintenance of the collection of Buckwheat (Fagopyrum Mill.) genus at Ustymivka Experimental Station of Plant Production (Poltava region), and areas of its use: introduction, preservation and study of the material, for the set of index, formation of special collections and providing research and education institutions of Ukraine with a valuable original material. Methods. Methodical developments dealing with formation and maintenance of crop collections, methodical literature on the study of buckwheat collection for breeding and agronomic performance. Results. The author represented results of the collection material study for the main breeding and economically valuable traits including yield, productivity, resistance to abiotic and biotic factors of the environment. The results of work are considered aimed on creating special collections of the gene pool – base, trait (for yield and large seeds; for productivity, drought and heat resistance; for suitability for mechanical cultivation), educational and core ones. Conclusions. All formed and registered collections are a valuable base material for solving a number of breeding goals to increase the quantity and improve the quality of plant production.

Revealed main point of formation the matrix differences of lettuce seeds characteristics (Lactuca sativa L.), its correlation with other categories of heterogeneity. It’s been shown the ways of decreasing of the matrix differences of lettuce seeds characteristics with the aim to increase sowing quality of seeds.

Revealed main point of formation the matrix differences of lettuce seeds characteristics (Lactuca sativa L.), its correlation with other categories of heterogeneity. It’s been shown the ways of decreasing of the matrix differences of lettuce seeds characteristics with the aim to increase sowing quality of seeds.