Institutul de Genetică, Fiziologie şi Protecţie a Plantelor
Permanent URI for this communityhttps://msuir.usm.md/handle/123456789/13417
Browse
2 results
Search Results
Item The breeding of highly resistant tomato F1 hybrids to stress abiotic factors [Articol](Editura USM, 2025) Makovei, MilaniaThe paper presents the results of studying the adaptive potential of F1 tomato hybrids obtained from crossing genotypes with different combinations of mutant marker genes. The assessment of resistance to high and low temperatures is evaluated at the stage of mature male gametophyte under in vitro conditions and fruiting under in vivo conditions Genotype-specific differences in the character of manifestation of traits between F1 hybrids, both depending on the features of the initial forms and the type of temperature stress factor, were established. A stable character of manifestation of the studied traits of male gametophyte is observed in hybrids from combinations with genotypes of cultural type and mutant forms - L8/234 × Mo835, L33/241 × Mo835, L111 × Mo 341, Fakel × Mo 341, MaKrista × Mo 341. Strong variability was characteristic of F1 intermutant hybrids (L33/16 × Mo 835, L11069 × L28, L45/16 × Mo 341) under both stress backgrounds (45°C and +6°C) including fruiting in three different years of research (2021-2023).Item Traits of tomato male gametophyte as a criterion for selection of breeding valuable forms at early stages of ontogenesis(CEP USM, 2024) Makovei, MilaniaIn vitro assessment of pollen qualitative traits affecting reproductive and other functions of tomato plants was carried out, including under the influence of a high-temperature stress factor in multimarker lines and F1 hybrids obtained on their basis. The F1 hybrids and lines are characterized by morphological traits of pollen. It was revealed that the morphological heterogeneity of pollen grains in the F1 hybrid Rozamak is associated with the dominant inheritance of the ls gene from the maternal form. It has been shown that the processes of pollen germination and pollen tube growth under in vitro conditions in both freshly collected and heat-treated F1 hybrids occur synchronously and in a shorter period (1-2 hours) than in their parental lines.