In today's climate, modern courgette breeding requires the creation of highly adaptive starting material. To evaluate the adaptive potential, we used 21 courgette lines made from samples of foreign breeding and the following indicators: general and specific adaptive capacity of the genotype (GACi and SACi); relative genotype stability (Sgi); environmental durability factor (bi); breeding value of the genotype (BVGi). During 2016–2018 valuable courgette lines were created that were characterized by the stability of the performance traits. The best sample was the VL90 line, in which the level of manifestation of the characteristics “Total yield” and “Productivity of one plant” was 63.35 t/ha and 3.11 kg/plant, respectively. There are 3 lines, VL-91, VL-92 and LC 17-44, which had a total yield of more than 52 t/ha and productivity of one plant over 2.5 kg/plant. According to the adaptability indicators for the two above mentioned features, only one VL-90 line and the Chaklun variety (standard) had a low dependence on growing conditions (bi < 1). There were 3 lines, VL-90, LC 17-7 and VL-92, for which the manifestation of the first trait did not depend on the growing conditions. Three lines according to the manifestation of the two studied traits should be attributed to the intensive type of cultivation (bi> 1) – LK 17- 5, LK 17-44 and LK 17-45. Created source material has practical value for creating varieties and hybrids of F1, both with high ecological-plastic properties and intensive type of cultivation
courgette, line, adaptive potential, total yield, productivity of one plant, ecological plasticity, breeding value of genotype
[1] Katayeva, T. Ye. (2011). Novyy serednʹostyhlyy sort kabachka Konsul [New midseason courgette variety Consul]. Bulletin of Poltava State Agrarian Academy, 1, 69–71.
[2] Puzik, L. M., Obraztsova, Z. G. (2012). Osoblyvosti formuvannya vrozhaynosti kabachka zalezhno vid klimatychnykh umov [Features of formation of courgette yield depending on climatic conditions]. Bulletin of Poltava State Agrarian Academy, 1, 30–32.
[3] Kataeva, T. E., Borisenko, L. D. (2012). Novi biloplidni kabachky-tsukini [New white fetal courgette-zucchini]. Scientific papers of the Institute of Bioenergy Crops and Sugar Beet (2017): Collected articles, 15, 230–232.
[4] Tikhonova, T. E., Gorovaya, T. K., Sergeev, G. V., Yarovoy, G. I. (2007). Selektsiya, tekhnologiya vyrashchivaniya i semenovodstvo kabachka i patisona: metodicheskiye rekomendatsii [Breeding, growth technology and seed production of courgette and scallop: guidelines]. Harkov: IOB UAAN, 22.
[5] Kilchevsky, A. V., Khotyleva, L. V. (1985). Metod otsenki adaptivnoy sposobnosti i stabil'nosti genotipov, differentsiruyushchey sposobnosti sredy [Method for assessing adaptive ability and stability of genotypes, differentiating ability of the environment]. Genetics, 9 (21), 1481–1490.
[6] Gudzenko, V. M., Vasylkivskiy, S. P. (2017). Vyvedennya sortiv yachmenyu ozymoho adaptovanykh do suchasnykh umov Lisostepu Ukrayiny [Derivation of winter barley varieties adapted to modern conditions of the ForestSteppe of Ukraine]. Collected Works of Uman National University of Horticulture, 90 (1), 63– 70.
[7] Demidov, A. A., Vasylkivsky, S. P., Gudenko, V. M. (2017). Ekoloho-henetychni aspekty selektsiyi yachmenyu ozymoho shchodo pidvyshchennya yoho produktyvnoho ta adaptyvnoho potentsialu u Lisostepi Ukrayiny [Ecological-genetic aspects of winter barley breeding for enhancing its productive and adaptive potential in the Forest-Steppe of Ukraine]. Agro-ecological journal, 2, 194–200.
[8] Starichenko, V. M., Golik, L. M., Tkachova, N. A. (2014). Otsinka adaptyvnoyi zdatnosti ta stabilʹnosti sortiv i liniy v selektsiyi pshenytsi ozymoyi. Selektsiya i nasinnytstvo [Evaluation of adaptive capacity and stability of varieties and lines in winter wheat breeding. Breeding and seed production]. Breeding and seed production, 105, 77–84.
[9] Vasylkivsky, S. P., Gudenko, V. M. (2017). Henetychni dzherela pidvyshchenoho produktyvnoho ta adaptyvnoho potentsialu dlya selektsiyi yachmenyu ozymoho u Tsentralʹnomu Lisostepu Ukrayiny [Genetic sources of increased productive and adaptive potential for winter barley breeding in the Central Forest Steppe of Ukraine]. Collected Works of Uman National University of Horticulture, 90 (1), 90–94.
[10] Andriyevsʹka, S. A., Neporozhna, Y. E.. O., Tykhonova, T. Ye. (2001). Pryntsypy i metody selektsiyi ovochevykh roslyn rodyny harbuzovykh. Kabachok. Patyson. Suchasni metody selektsiyi ovochevykh i bashtannykh kulʹtur [Principles and methods of selection of vegetable plants of pumpkin family. Zucchini. Scallop. Modern methods of selection of vegetable and melons]. Kharkiv: DP Kharkivsʹka drukarnya № 2, 188–213.
[11] Litun, P.P., Kirichenko, V.V., Petrenkova, V.P., Kolomatskaya, V.P. (2007). Adaptyvnaya selektsiya. Teoryya y praktyka na sovremennom étape [Adaptive breeding. Theory and practice at the present stage]. Kharkiv: Institute of Plant Growing. V.Ya. Yuryeva, 270.
[12] Dospekhov, B. A. ed. (1985). Metodika polevogo opyta (s osnovami statisticheskoy obrabotki rezul'tatov issledovaniy) [The methodology of field experience (with the basics of statistical processing of research results)]. Moscow: Agropromizdat, 350.