The results of evaluation of ecological stability and plasticity of 20 collection samples of bread spring wheat by productivity indices for 2015-2017 are presented. During the research, weather conditions differed from the average long-term indicators of temperature regime, the amount of precipitation and their distribution in some months that gave an opportunity to evaluate wheat collection material by adaptability and to identify the best. Collection samples were differentiated by the grain number per spike. 2016 was the most favorable for growth and development of plants (HTC = 1.25), with the index of conditions 3.5, and the average grain number per spike 40.9. According to the trait, the samples Laska, Sudarynya (BLR), Margarita, Chelyaba yubileynaya (RUS), Shortandinskaya 95 uluch. (KAZ) etc. with regression coefficient (bi = 0.69-0.99) were identified. This testifies to the plasticity of these genotypes in stressful conditions and therefore they are promising for use in breeding for the trait. Meteorological conditions of cultivation significantly influenced on grain formation with a high weight of 1000 grains, which caused a significant variation of this trait during the years of study. There were identified the samples which when weather conditions fluctuate had regression coefficient close to one (bi = 0.63-0.96) Shortandinskaya 95 uluch., Astana, Kazakhstanskaya 22 (KAZ), Laska (BLR), Dobrynya, Margarita, Altayskaya 99 (RUS), MIP Zlata, Erythrospermum 12-36 (UKR) etc. By grain weight per spike there were found samples: Erythrospermum 12-36 (UKR), Astana, Zhenis, Kazakhstanskaya 22, Shortandinskaya 95 uluch. (KAZ), Sudarynya (BLR), Chelyaba yubileynaya, Altayskaya 99 (RUS) etc. with values of bi = 0.58-0.97. They are of great importance in spring wheat breeding for given trait and may be involved in hybridization. As a result of the researches conducted, stable and plastic collection samples of bread spring wheat were distinguished by productivity indices (grain number per spike, weight of 1000 grains, grain mass of per spike) Shortandinskaya 95 uluch., Kazakhstanskaya 22 (KAZ), Margarita (RUS), Laska, Sudarynya (BLR), MIP Zlata (UKR), which can be used in the breeding process as a source material for increasing adaptive capacity.

Breeding and seed production ÂñòóïÎäí³ºþ ç ïð³îðèòåòíèõ ñêëàäîâèõ ÷àñòèí ñåëåêö³éíèõ ïðîãðàì ùîäî ïøåíèö³ º âèêîðèñòàííÿ âèõ³äíîãî ìàòåð³àëó ÿê â³ò÷èçíÿíîãî, òàê ³ çàðóá³aeíîãî ïîõîäaeåííÿ‚ ãåíå-òè÷íå ð³çíîìàí³òòÿ ÿêîãî ìຠïðàêòè÷íó ö³íí³ñòü ï³ä ÷àñ ñòâîðåííÿ íîâèõ ñîðò³â [1][2][3][4]. Ñèñòåìàòè÷íå âèâ÷åííÿ êîëåêö³éíîãî ìàòå-ð³àëó çà àäàïòèâíèìè îçíàêàìè äຠçìîãó âèÿâëÿòè çðàçêè ³ç ö³ííèìè îçíàêàìè ³ âëàñòèâîñòÿìè äëÿ åôåêòèâíîãî âèêîðèñòàííÿ â ïðàêòè÷í³é ñåëåêö³¿ [5‚ 6].Ó ñâ³òîâîìó ãåíîôîíä³ ïøåíèö³ íàë³÷óºòüñÿ çíà÷íà ê³ëüê³ñòü ñîðò³â ³ ôîðì, ÿê³ ìîaeíà âè-

No abstract

Aim. The research was aimed to allocate bread spring wheat lines of competitive strain testing with high adaptive potential to engage in research programs as a source material. Methods. Statistical. Results. Meteorological conditions during the period studied were contrast, which allowed to evaluate and highlight lines of bread spring wheat for adaptability. Based on the analysis of parameters of yield and its variability under the influence of environmental factors during the 2013–2015 lines with high adaptive capacity: Lutestsens 10-29, Lutestsens 11-26, Lutestsens 10-36, Erytrospermum 13-39, Lutestsens 08-26 were identified. Lines with high adaptive capacity Lutestsens 10-36, Erytrospermum 13-39, Lutestsens 08-26 was transferred to the State variety testing as Oksamyt Mironivs’kyi, MIW Oleksandra and Bozhena. Conclusions. Genotypic variability of performance elements of bread spring wheat lines of competitive strain testing was determined. The lines with high adaptive capacity were identified. Keywords: bread spring wheat, source material, productivity, adaptability.

Ìåòà. Îö³íèòè êîëåêö³éí³ çðàçêè ïøåíèö³ ì'ÿêî¿ ÿðî¿ çà ïîñóõîñò³éê³ñòþ ³ ïðîäóê-òèâí³ñòþ òà âèä³ëèòè êðàù³ äëÿ çàëó÷åííÿ â íàóêîâ³ ïðîãðàìè ÿê âèõ³äíèé ìàòåð³àë. Ìåòîäè. Ó 2016, 2017 ðð. ó ëàáîðàòî𳿠ñåëåêö³¿ ÿðî¿ ïøåíèö³ äîñë³äaeóâàëè 26 êîëåê-ö³éíèõ çðàçê³â ïøåíèö³ ì'ÿêî¿ ÿðî¿. Ïîñóõîñò³éê³ñòü âèçíà÷àëè ó â³ää³ë³ á³îòåõíîëî㳿, ãåíåòèêè ³ ô³ç³îëî㳿 çà â³äñîòêîì ïðîðîñòàííÿ íàñ³ííÿ ó ðîç÷èí³ ñàõàðîçè çà îñìî-òè÷íîãî òèñêó 14 ³ 16 àòì. Ñòàòèñòè÷í³ ïîêàçíèêè îá÷èñëþâàëè çà Á. Î. Äîñïºõîâèì. Ðåçóëüòàòè. Ó ïåð³îä ïðîâåäåííÿ äîñë³äaeåíü ïîãîäí³ óìîâè â³äð³çíÿëèñü â³ä ñåðåä-í³õ áàãàòîð³÷íèõ ïîêàçíèê³â çà òåìïåðàòóðíèì ðåaeèìîì, ê³ëüê³ñòþ àòìîñôåðíèõ îïà-ä³â òà ¿õ ðîçïîä³ëîì â îêðåì³ ì³ñÿö³, ùî äàëî ìîaeëèâ³ñòü îö³íèòè òà âèä³ëèòè êðàùèé êîëåêö³éíèé ìàòåð³àë ïøåíèö³ çà ïîñóõîñò³éê³ñòþ òà ïðîäóêòèâí³ñòþ. Çà ðåçóëüòàòàìè ëàáîðàòîðíîãî ìåòîäó âèçíà÷åííÿ ïîñóõîñò³éêîñò³ âèä³ëåíî êîëåêö³éí³ çðàçêè ïøåíèö³ ì'ÿêî¿ ÿðî¿ ÄàëüÃÀÓ 1, Ëþòåñöåíñ 540, Íîâîñèáèðñêàÿ 44 (RUS), Äóáðàâêà (UKR), Ìàðãàðèòà (BLR) òà ³í. ³ç ñóòòºâî âèùèìè â³ä ñòàíäàðòó Åëåã³ÿ ìèðîí³âñüêà ïîêàçíèêàìè ïîñóõîñò³éêîñò³. Âîíè ðåêîìåíäîâàí³ ÿê âèõ³äíèé ìàòåð³àë äëÿ ñåëåêö³¿ çà ö³ºþ îçíàêîþ. Ïðàêòè÷íèé ³íòåðåñ äëÿ ñåëåêö³éíî¿ ðîáîòè ñòàíîâëÿòü çðàçêè, ùî âèä³ëèëèñü çà åëåìåíòàìè ñòðóêòóðè âðîaeàþ: Ìàðãàðèòà (BLR), Áîaeåíà, Äóáðàâêà (UKR), Ñîíàòà, Ïàìÿòè Àôðîäèòû, Êèíåëüñêàÿ 61 (RUS) òà ³íø³. Âîíè ðåêîìåíäîâà-í³ äëÿ ñõðåùóâàíü ÿê áàòüê³âñüê³ êîìïîíåíòè ç âèñîêèì ïîòåíö³àëîì ïðîäóêòèâíîñ-ò³. Âèñíîâêè. Âèä³ëåíî êîëåêö³éí³ çðàçêè ïøåíèö³ ì'ÿêî¿ ÿðî¿ Êèíåëüñêàÿ 61, AEíèöà, ÄàëüÃàó 1, Ñîíàòà (RUS), Ìàðãàðèòà (BLR), Áîaeåíà, Äóáðàâêà, Ì²Ï Ñâ³òëàíà (UKR), ùî ïîºäíóþòü ïðîäóêòèâí³ñòü ç³ ñò³éê³ñòþ äî ïîñóõè ³ º ö³ííèì âèõ³äíèì ìàòåð³àëîì äëÿ ñåëåêö³¿ çà öèìè îçíàêàìè. Êëþ÷îâ³ ñëîâà: ïøåíèöÿ ì'ÿêà ÿðà, çðàçêè, ïîñóõîñò³éê³ñòü, åëåìåíòè ïðîäóêòèâ-íîñò³ Ìèðîí³âñüêèé â³ñíèê Âèïóñê 4, 2017 Cereal crops breeding Âèïóñê 4, 2017 Cereal crops breeding investigated at Spring Wheat Breeding Laboratory. Drought tolerance was determined at Biotechnology, Genetics and Physiology Department by percentage of seed germination in sucrose solution at osmotic pressure of 14 and 16 atm. Statistical data were calculated according to B. A. Dospekhov. Results. During the study period, weather conditions differed from the average long-term values for temperature regime, the amount of precipitation and their distribution in individual months which allowed us to evaluate wheat samples for drought resistance and productivity. According to the results of laboratory method of determining drought tolerance, there were identified collection samples of bread spring wheat: DalGAU 1, Lutescens 540, Novosibirskaya 44 (RUS), Dubravka (UKR), Margarita (BLR), etc. exceeding standard variety Elehiia myronivska by drought tolerance. These variety samples are recommended as source material in breeding for this character. The samples that were distinguished by yield components: Margarita (BLR), Bozhena, Dubravka (UKR), Sonata, Pamyati Afrodity, Kinelskaya 61 (RUS), etc. are of practical interest for breeding work....