Comparative assessment of quince cultivars (Cydonia oblonga Mill.) by the main morphological and economic biological characteristics

Aim. A comparative assessment of the long-known and new cultivars by the main morphological, biological and economically valuable characteristics, the study of the range of their variation. Methods. The objects of research were 200 cultivars and forms of various ecological and geographical origin that make up the gene pool collection of quince of the Nikitsky Botanical Gardens and located in the Crimean steppe zone. The observations were carried out according to generally accepted programs and methods of cultivar research and selection of fruit, berry and nut-bearing crops. Results. Assessment of quince by the strength of tree growth made it possible to distinguish weak-growing cultivars with a compact crown - ꞌDachnayaꞌ, ꞌKonservnaya Pozdnyayaꞌ, ꞌKonservnaya Rannyayaꞌ, ꞌLimonnayaꞌ, ꞌShchedrayaꞌ, High-yielding cultivars ꞌZolotistaya Moldavskayaꞌ, ꞌIzobifnaya Krymskaya’, ꞌKonservnaya Rannyayaꞌ, ꞌKubanskayaꞌ, ꞌNovorichnayaꞌ, ‘Oktyabrina’, ꞌOsenniy Souvenir’ were identified. The gene pool was evaluated by the shape and size of the fruit, cultivars of rounded shape with a smooth surface are noted: ‘Oktyabrina’, ꞌMirꞌ, ꞌOsenniy Souvenir’, ꞌYubileynaya Moldavskayaꞌ, ꞌYuzhankaꞌ. It has been established that the flowering periods of quince cultivars differ slightly, the difference in ripening between early and late cultivars is about 30 days. In terms of resistance to adverse environmental factors, a wide variation between cultivars is noted. Conclusions. As a result of the study of cultivars and forms of quince by a complex of morphological, biological and economic parameters, a significant variety was revealed by these signs. Cultivars s with extreme positive values are of interest. Most of the selected genotypes have not one, but several desirable qualities, which allows to find the right combination for successful breeding work. Cultivars with high environmental sustainability are of considerable interest for industrial gardening and personal subsidiary plots of the southern zone of Russia.

1. Antyufeyev VV, Vazhov VI., Ryabov V.A. The reference book about climate of the Steppe department of the Nikita Botanical Gardens. Yalta, 2002. 88 p.

2. Baskakova VL. The trait collection of quince of the Nildtsky Botanical Gardens // Innovative technologies in the field of genetics, breeding, seed production and reproduction of plants. Mater. IV International scientific and practical conf. (Yalta, September 3 - 8, 2018) // Proceedings of the Kuban SAU. 2018. Vol. 2. P. 21-25. DOI: 10.21515/1999-1703-73-21-25

3. Baskakova V.L. Efficiency of using initial material in quince crossbreeding // Preserving the diversity of the plant world in botanical gardens: traditions, modernity, prospects. Mater. International conf., dedicated to the 70th anniversary of the Central Siberian Botanical Garden (Novosibirsk, August 1-8, 2016). Novosibirsk: CSBG SO RAS, 2016. P. 33 - 35.

4. Beloshapkina О.О., Kumakhova Т.Т., Voronkov A.S. Fungal diseases of quince and medlar, their relationship with the microstructural features of integumentary tissues // Problems of development of the agricultural sector in the region. 2018. №2 (34). P. 27 - 34.

5. Edysova S.N., Mozhar N.V., Donchenko L.V. Varietal study of quince in Kuban. Maykop: Globus, 2007. 79 p.

6. Klimenko S.N. Quince. Kiev: Naukova Dumka, 1993. 285 p.

7. Kopylov VI., Balykina Е.В., Berenshtein I.В. et al. The system of horticulture in the Republic of the Crimea. Simferopol: Publishing House «Arial», 2017. 546 p.

8. A comprehensive program for the selection of seed crops in Russia for 2001 - 2020 // Resolution of the international scientific-methodological conference "The main directions and methods of selection of seed crops" (Orel, July 31 - August 3 2001). Orel, 2001. 29 p.

9. Masyukova О. V Scientific fundamentals of variety research and selection of quince. - Kishinev: Kartya Moldlvenyaske, 1975. 232 p.

10. Mozhar N. V. Replenishment of gene pool with new elite forms of pear and quince // Scientific works of the North Caucasus Federal Center for horticulture, viticulture, winemaking. 2018. Vol. 14. P. 83 - 85.] DOI: 10.30679/2587-9847-2018-14-83-85.

11. Plugatar Yu. V. The Nikitsky Botanical Gardens as a scientific institution // Bulletin of the Russian Academy of Sciences. 2016. Vol. 86. № 2. P. 120 - 126.

12. Plugatar Yu.V, Smykov А.V Contribution of the Nikitsky Botanical Gardens to the development of horticulture in southern Russia // Ways to improve gardening. Proceedings of the NBG. 2017. Vol. 144. P. I. P. 49-54.

13. Prichko IG., Chalaya L.D., Mozhar N. V Comprehensive assessment of quince varietal fund (Cydonia ohlonga Mill.) In the conditions of the Krasnodar Region // Vavilov Journal of Genetics and Breeding. 2017. Vol. 21. №2. P. 180 - 188. DOI: 10.18699/VJ17.235

14. Prichko T.G., Chalaya L.D., Mozhar N.V. The results of varietal study of quince faiits grown in the south ofRussia//Fruit growing and berry growing in Russia. 2016. Vol. 45. P. 128 - 136

15. Program and methods of varietal study of fruit, berry and nut crops I ed: E.N. Sedov, T.P. Ogoltsova. Orel, 1999. P. 253 - 299.

16. Program and methods of selection of fruit, berry and nut crops / ed: E. TS!. Sedov. Orel, 1995. P. 225 -233.

17. Smykov VK., Smykov A.V. Mobilization of initial material for selection of fruit crops. Proceedings of Ni kit. Bot. garden. 2004. Vol. 122. P. 6-8.

18. Adler M. Quince (Cydonia oblonga Mill .) and its growing and economic descriptions // Fruit growing and viticulture II. Floriculture and medicinal plants and other general themes: Proceedings of 9 International Conference of Horticulture. Czech Republic, Lednice, 3-6 September, 2001. V. I. Brno: Mendel University, 2001. P. 3 - 7.