Abstract
There were conducted the studies of the water regime of the leaves of 6 apricot cultivars of various origin in connection with the ability to adapt to moisture deficit during the periods of the greatest summer drought manifestation on the Southern Coast of the Crimea. The genotypes with the highest adaptive potential under conditions of hydrothermal stress were identified (possessing the best water-holding characteristics combined with a high degree of repair after critical dehydration) - 'Nagycorosi Orias', 'Kazachok', 'Professor Smykov'. 'Hurmai' cultivar demonstrates labile resistance. 'Crimskiy Amur' and 'Alupkinskiy' display instability of water regime indicators as well as a relatively low ability to tolerate extremely high temperatures and lack of moisture.
Highlights
The article shows the relationship of the yield of four promising forms of peach with its most limiting factors
The equations of multiple regression are presented, which allow us to predict the yield of the studied forms
In form Veteran free pollination the coefficient of multiple regression was R = 0.95, the coefficient of multiple determination was R2 = 0.90; in the hybrid form Zlatogor x Uspar-1 80-367, respectively, 0.99 and 0.98; in the form Lauréat x Zlatogor 73-3 - 0.96 and 0.92; the form (Podarok Kryma free pollination x Tovarishch) 85-104 - 0.98 and 0.96. These coefficients show the degree of dependence between productivity and factors included in the study
Summary
The article shows the relationship of the yield of four promising forms of peach with its most limiting factors. Проведено изучение особенностей водного режима листьев растений 6 сортов абрикоса: 'Nagycorosi Orias' венгерского происхождения, среднеазиатского - 'Хурмаи'; 'Алупкинский', 'Казачок', 'Крымский Амур', 'Профессор Смыков' - селекции Никитского ботанического сада в периоды наибольшего проявления летней засухи на Южном берегу Крыма. Объекты и методы исследований Объектами изучения служили 6 генотипов Prunus armeniaca Lam. из коллекции Никитского ботанического сада - Национального научного центра, среди которых четыре сорта селекции НБС: Алупкинский, Крымский Амур, Казачок, Профессор Смыков; 2 интродуцента - 'Nagycorosi Orias' (из Венгрии), 'Хурмаи' (из Средней Азии).
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