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Published in Scientific Papers. Series B, Horticulture, Volume LIX
Written by Nadejda MIHNEA

The paper was aimed to present the results of study of variability and heritability of some tomato characteristics:plant height, number of branches, number and weight of fruits per plant, size, length and diameter of the fruit,thickness of pericarp, number of locules which were presented for four tomato hybrids 'Маestro’ х 'Irişca’,'Маestro’ х 'Dwarf Moneymaker’, 'Мihaela’ х 'Irişca’, 'Мihaela’ х 'Dwarf Moneymaker’. Analyzing the coefficientof variability of quantitative characters of parents, hybrid combinations F1, F2 and backcrosses, it was found thatthe coefficient for the number and weight of fruits per plant for both, parents and all hybrid combinations was high,the average being 36.5 and 37.1%, respectively. Small variability was demonstrated for the plant height anddiameter of the fruit. The heritability of quantitative characters depended significantly on parental forms. Thehighest values of heritability for the number and weight of fruits per plant were registered for 'Маestro’ х 'Irişca’and 'Мihaela’ х 'Dwarf Moneymaker’ hybrid combinations. The combination 'Маestro’ х 'Irişca’ was highlightedas having high coefficient of variability for the most characters.

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