Water-soluble carbohydrates, cytokinins, ABA, salicylic acid and microelements content's dynamics in wintering underground organs of P.alba and G.nivalis were studied. Correlation between substance's level and air temperature, ground freezing depth, snow layer thickness fluctuations was determined. The role of phytohormons and free sugars in adaptive potential realization are discussed.

Water-soluble carbohydrates, cytokinins, ABA, salicylic acid and microelements content's dynamics in wintering underground organs of P.alba and G.nivalis were studied. Correlation between substance's level and air temperature, ground freezing depth, snow layer thickness fluctuations was determined. The role of phytohormons and free sugars in adaptive potential realization are discussed.

Tere are discussed results of joint Bukovino-moldavian corn breeding programmer, as a result which are created two registered hybrids, one perspective, and new material for the further work.

Tere are discussed results of joint Bukovino-moldavian corn breeding programmer, as a result which are created two registered hybrids, one perspective, and new material for the further work.

It is explained the essence of the formation of seed production of lettuce Lactuca sativa var. secalina L. depending on the form of the inflorescence habitus, which formed during the different areas of plant nutrition. It is substantiated the mechanism of seed formation on different parts of the inflorescence of female plant with identification of it’s sowing quality. It is developed the agrotehnologcal measures aimed at improving the productivity of lettuce seed by overcoming its matrical heteroquality

It is explained the essence of the formation of seed production of lettuce Lactuca sativa var. secalina L. depending on the form of the inflorescence habitus, which formed during the different areas of plant nutrition. It is substantiated the mechanism of seed formation on different parts of the inflorescence of female plant with identification of it’s sowing quality. It is developed the agrotehnologcal measures aimed at improving the productivity of lettuce seed by overcoming its matrical heteroquality

In given article the historical way of development of selection of sugar beet at the Ivanivska research-selection station is opened. For 100 years of selection work at station by scientific employees are created and introduced into manufacture over 20 grades of sugar beet.

In given article the historical way of development of selection of sugar beet at the Ivanivska research-selection station is opened. For 100 years of selection work at station by scientific employees are created and introduced into manufacture over 20 grades of sugar beet.

The author presents the characteristies of the best stone fruit crops cultivars of the Donets’k breeding which are high adapted to the climatic conditions of the Donbass and Ukrasne’s northern regions and have marketable fruits.

The author presents the characteristies of the best stone fruit crops cultivars of the Donets’k breeding which are high adapted to the climatic conditions of the Donbass and Ukrasne’s northern regions and have marketable fruits.

Development and improvement of a female component of MS hybrids of sugar beet were carried out on the basis of the following methods: inereasing frequency of occurrence of sterility maintainers by means of preliminary saturation of the population with alleles of the x and z genes; the use, as a female form, of simple sterile hybrids from the crossing of sterile lines with unrelated O-types; and also the drawing in of complexes of valuable genes from materials of foreign origin.

Мета. Визначити поліморфізм мікросателітних локусів QTL-hotspot-регіону групи зчеплення 4, пов’язаного з толерантністю до посухи, у сортів нуту звичайного української селекції. Методи. Екстрагування та очищення ДНК з проростків ЦТАБ­методом; полімеразна ланцюгова реакція; горизонтальний гель­електрофорез; визначення розмірів продуктів ампліфікації за допомогою програми «Image J». Результати. Встановлено алельні комбінації мікросателітних локусів ICCM0249, NCPGR127, TAA170, NCPGR21, TA130 і STMS11 QTL­hotspot­регіону групи зчеплення 4 геному нуту. За локусами STMS11, NCPGR127 і NCPGR21, які виявилися неполіморфними в межах аналізованої вибірки сортів, детектовано по одному алелю; за ICCM0249 і TAA170 – по два; за TAA130 – три алелі, що вказує на їхню поліморфність. Висновки. Серед семи сортів нуту української селекції три мікросателітні локуси є неполіморфними, а саме: STMS11, NCPGR127 і NCPGR21. Ще три – поліморфними з двома алелями для локусів ICCM0249 і TAA170 і трьома для TAA130. За результатами аналізу сортів встановлено п’ять типів комбінацій алелів мікросателітних локусів ICCM0249, NCPGR127, TAA170, NCPGR21, TA130 і STMS11. У сорту ‘Пам’ять’ ідентифіковано унікальний для досліджуваної вибірки алель розміром 185 п. н. | Purpose. To determine the polymorphism of microsa­tellite loci of the QTL-hotspot-region of linkage group 4, associated with drought tolerance in Ukrainian chickpea varieties. Methods. Extraction and purification of DNA from seedlings using the CTAB method; polymerase chain reaction; horizontal gel electrophoresis; determination of the size of amplification products using the “Image J” prog­ram. Results. Allelic combinations of microsatellite loci ICCM0249, NCPGR127, TAA170, NCPGR21, TA130, STMS11 of the QTL­hotspot­region of linkage group 4 of the chickpea genome were established. It was found that the loci STMS11, NCPGR127, NCPGR21 were not polymorphic within the sample of varieties analyzed, one allele was detected for each locus; two alleles were detected for the loci ICCM0249 and TAA170 and three alleles for the locus TAA130, indica­ting their polymorphism. Conclusions. Microsatellite loci STMS11, NCPGR127, NCPGR21 are non­polymorphic in seven Ukrainian chickpea varieties. Three loci are polymorphic with two alleles for ICCM0249 and TAA170 and three alleles for TAA130. According to the analysis of chickpea varie­ties, five types of allelic combinations of microsatellite loci ICCM0249, NCPGR127, TAA170, NCPGR21, TA130, STMS11 were established. An allele of 185 bp unique to the sample of cultivars studied was identified in the variety ‘Pamiat’