Fruit growing
and viticulture of South Russia

Annotation

The paper presents the results of the prospects evaluation for the use of two strawberry varieties as Florence and Belrubi in selection on the fruit size. For breeding in this direction it is necessary to know the features of the inheritance by the given trait and the individual qualities of the studied varieties. The standard parameter for evaluation of the genetic potential of agricultural crop is the coefficient of heritability in broad and narrow meaning, which allows to know the donor potential of the studied forms, based on the additive effect of genetic interactions. The purpose of our research is an evaluation of the donor potential by the average fruit weight of the Florence and Belrubi varieties. In this work we used the programs and methods generally accepted in Russia, as well as the Program of the North Caucasian Center for Breeding of Fruit, Berry, Decorative Flower Crops and Grapes for the Period until 2030. Studies have shown that a distinct additive genetic effect and concomitant donor potential is revealed by the average fruit weight for the Florence variety, which showed in five hybrid selections with its participation the coefficient of heritability in the narrow meaning h2 from 0,73 to 0,84. For the Belrubi variety in the nine hybrid selections with its participation, five selections showed values of the heritability coefficient from 0,04 to 0,46, which indicates the predominance of the non-additive effect of genetic interactions in these vegetative hybrid populations and the benefit of breeding on fruit size in individual cross combinations with the participation of Belrubi. The potential realization possibility of the Belrubi variety in four from nine hybrid selections with its participation of the additive genes effect on the average fruit weight is allow to identify this variety as a genetic source.

Annotation

The results of evaluation of 21 selective hybrid forms of strawberry on a number of economic and biological traits are presented in the article. Three forms of strawberry are allocated in the elite

Annotation

The paper presents the results of the evaluation of 8 hybrid pink-flowered forms of strawberry for the some economically valuable traits. Selections 1-28-12, 7-20-12, 6-9-12 (Djeni), 8-24-12, 3-27-12, 8-9-12 were studied from the hybrid combination Belrubi × F1 C-141 and 6-14-12, one form 5-9-15 was studied from the combination Onda × F1 Toscana. The analysis of the variability of breeding samples was carried out by the traits of the productivity and quality of the berry: the number of inflorescences, the number of berries, the weight of the 1st order berry, the average weight of the berry, the density of the pulp of the berry, the content of total soluble solids, the sum of sugars, acidity, sugar-acid index, the content of vitamins C, P and anthocyanins. The aim of this work was to evaluate hybrid pink-flowered forms on the traits of productivity and quality of berry and to identify the best ones for use in home gardening in the North Caucasian region. Programs and methods generally accepted in Russia were used for the research. A comprehensive study of strawberry hybrids by the economically valuable characters was provided the distribution of the studied forms on the groups using the cluster analysis by the Ward's method. With a linkage distance of 62.0 cu/s three groups were distinguished, which included one, two and five hybrid numbers of strawberry, respectively. The selection efficiency of partition into cluster groups of the studied hybrid forms of strawberry in accordance with their genotypically determined mutual affinity was also verified by plotting a graphical distribution of hybrids on the plane of the X and Y coordinate axes. As a result of a comprehensive breeding and genetic assessment of hybrid pink-flowered forms of strawberry by the traits of productivity and quality of berry, the best of them were selected for use in the home gardening in the North Caucasian region: 5-9-15 from the Onda × F1 Toscana combination, as well as 1-28- 12, 7-20-12, 3-27-12 and 8-24-12 from Belrubi×F1 C-141.