Abstract

The features of the reproductive potential of wild tomato species L. hirsutum var. glabratum and L. esculentum var. racemigerum, as well as mutant forms (Mo 393, Mo 628, Mo 755) and the Marglob variety, their hybrids for the use of the revealed patterns for the needs of practical breeding. The aim of this research was to study seed productivity and assess the fertility of interspecific and intraspecific hybrids of tomato plants and their parental forms. The studies were carried in the laboratory of the tomato genetic collection, as well as at the experimental base of the Federal State Budgetary Scientific Institution “Federal Research Center of Biological Plant Protection”, Krasnodar, Russia. Ten interspecific (Marglob x L. esculentum var. racemigerum, Marglob x L. hirsutum var. glabratum, Mo 393 x L. esculentum var. racemigerum, Mo 628 x L. esculentum var. racemigerum, Mo 755 x L. esculentum var. racemigerum, Mo 393 x L. hirsutum var. glabratum, Mo 755 x L. hirsutum var. glabratum) and intraspecific (Marglob x Mo 393, Marglob x Mo 628, Marglob x Mo 755) hybrids of tomato plants were used for this study. A statistically significant effect of the genotype of parental forms and F1 hybrids of tomato plants on insemination and fruit weight was established. The share of the corresponding variance was 79.1 and 92.6%, respectively. It was revealed that the location of the reproductive organs within the same plant significantly affects the insemination rate of the fruits. It has been established that with an increase in the serial number of the fruit, its insemination increases. The highest rates of seed productivity and seed fertility in intraspecific and interspecific hybrids are characteristic of the second and third racemes, which must be taken into account in breeding practice.