Abstract
Goal. To assess the combinatorial ability of the tomato source material by sign «lycopene content in the fruit» in the system of diallel crosses. Methods. Field — to establish differences between variants of the experiment; laboratory — to determine the content of lycopene in the fruit; genetic — to determine the indicators of combinatorial ability; mathematical and statistical — to assess the reliability of the research results. Results. Studies identified samples that should be used for heterosis and varietal selections, as well as those that should be used only when creating synthetic varieties. The established advantages of additive effects in the genetic control of the sign «lycopene content in tomato fruits» made it possible to select phenotype in the 2nd hybrid generation. Conclusions. Samples MO 112 and T-3627 should be used to create heterosis hybrids and as a component of synthetic varieties. The Dark green sample, Alia variety, and the № 477 lines can be used to create synthetic varieties. The established advantage of additive effects in the genetic control of the sign «lycopene content in tomato fruits» makes it possible to recommend selection in the selection process by phenotype, starting from the 2nd hybrid generation.
Highlights
Lycopene is a unique natural antioxidant that has anti-cancer properties [1, 2]
Tomato forms with mutant genes hp-2dg, Bog, Bc are high in lycopene content, but they are characterized by low productivity, late and extended ripening period, which significantly reduces their practical value [9,10,11]
We found that samples MO 112 and T-3627 for three years had a high general combining ability (GCA) - 0.25-1.21 and 0.49-0.96, respectively, the sample Dark green high value GCA (1.02) had only in 2017, in other years of research - the average values of the effects of GCA (Table 2)
Summary
We found that samples MO 112 and T-3627 for three years had a high (reliable positive effects) GCA - 0.25-1.21 and 0.49-0.96, respectively, the sample Dark green high value GCA (1.02) had only in 2017, in other years of research - the average values of the effects of GCA (Table 2). 2. Effects of the general combining ability (GCA) of the trait of "lycopene content in tomato fruits", mg / 100 g, 2017-2019
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