The influence of weather conditions on the qualitative characteristics of elite black currant berries’ forms of Federal Agrarian Scientific Center of the North-East breeding

The studies were held on the experimental garden of N. V. Rudnitsky Federal Agrarian Scientific Center of the NorthEast in 2015-2018. The aim of research was to estimate the elite black currant forms according to biochemical composition and large-fruitiness in conditions of Kirov region and to reveal the sources of valuable traits. Nine elite black currant forms, 2013-year landing, breeding in Federal Agrarian Scientific Center of the North-East, and earlier transferred on State testing varieties Arcadia, Sapfir were the objects of research. The control variety was Vologda. Rregistrations, observations and biochemical analyzes were carried out according to generally accepted methods. The variability of weather conditions let us estimate their influence on qualitative berry composition of new elite black currant forms. As result of studying of elite black currant forms, the sources of features were identified: on large-fruitiness are 71-2-07 (Mortti x Chudnoe mgnovenye) and 64-4-07 (Chernovka x Karachinskaya) forms; on sugar content - 46-1-07 (Alivas x Chudnoe mgnovenye) form; on ascorbic acid is 27-3-07 form (the origin is not known). These genotypes are valuable as a source material for further breeding to increase the level of qualitative characteristics. Strong positive correlation of berry mass with rainfall during the period from May to July (r=0,86) and moisture index of growing season (r=0,85) was established. All studied elite forms were prominent by stability of dry solids storage (V=3,12-8,19 %). The storage of ascorbic acid is deeply connected with the sum of effective temperatures and mid temperature of July (r=0,95). A significant influence of weather conditions on content of ascorbic acid (V=23,08 %) was revealed. Strong positive correlation of total titrated acidity with the sum of rainfall in July (r=0,86) and moisture index of berry growing in July (r=0,93); strong negative connection with the sum of effective temperatures in vegetation growing period and crop ripening (r= -0,70) were shown. Middle positive correlation between sugar accumulation and middle air temperature in July was determined (r=0, 51). Weather conditions in ripening stage of berries had an important influence on sugar content (V=24, 98-52,96 %).

1. Pomology. Volume IV Currant. Gooseberry. Ed. E. N. Sedov. Orel: VNIISPK, 2009, 468 p. (In Russ.)

2. Zhidehina T., Rodyukova O., Guryeva I. Stability of the efficiency of black currant cultivars inchanging conditions of the environment, Russian Journal of Horticulture. 2014;1:33-38.

3. Yukhatcheva E.Ya., Misnikova N.V Economic and Biological Characteristics of New Selective Black Currants’ Hybrid Lines Bred in the Russian Lupin Research Institute. Vestnik Bryansk state agricultural Academy. 2018;2 (66):19-23. (In Russ.)

4. Akulenko E. G New complex sources for economic-valuable characters of black currant. Vestnik Bryansk state agricultural Academy. 2017;1(59):72-75. (In Russ.)

5. Sazonov F. F., Podgayetsky M. A. Breeding possibilities for increasing the C-vitamin content and large-fruited in black currant varieties. Improving the assortment and technology of growing fruit and berry crops: Mater. of intern.-practical conference, July 27-30, 2010. Orel, 2010:204-206. (In Russ.)

6. Knyazev S. D., Ogol'tsova T. P. Black currant breeding at the present stage. Orel: VNIISPK, 2004, 238 p. (In Russ.)

7. Levchenko N. B., Belyanina N. A., Kalugina T. V Biochemical evaluation of black currant berries of Research Institute of Siberia horticulture. In the book: “The latest trends of agrarian science development in the works of young scientists. Part 2. Novosibirsk, 2010, 459-462. (In Russ.)

8. Program and methods of breeding of fruit, small fruit and nut-bearing crops. Orel: VNIISPK, 1995, 501 p. (In Russ.)

9. Program and methods of variety study of fruit, small fruit and nutbearing crops. Orel: VNIISPK, 1999, 608 p. (In Russ.)

10. Methods of biochemical studies of plants. Leningrad, 1987. (In Russ.)

11. Dospekhov B. A. Methods of field experience: (with the basics of statistical processing of research results). M.: Agropromizdat, 1985, 351 p. (In Russ.)

12. Sazonov F. F. Creation of the base material of black currant in breeding for improving the berries qualitative characteristics: Status and prospects for the development of berry growing in Russia: Materials of the All-Russian scientific method. conference, June 19-22, 2006. Orel, 2006:253-257. (In Russ.)