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635.64:575.1 (5) |
Plante de grădină. Grădinărit (701) |
Genetică generală. Citogenetică generală (430) |
![]() MIHNEA, Nadejda. Study of inheritance of some quantitative traits in tomato. In: Oltenia - studii si comunicari stiintele naturii, 2014, nr. 2(30), pp. 29-33. ISSN 1454-6914. |
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Oltenia - studii si comunicari stiintele naturii | ||||||
Numărul 2(30) / 2014 / ISSN 1454-6914 | ||||||
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CZU: 635.64:575.1 | ||||||
Pag. 29-33 | ||||||
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Rezumat | ||||||
Data are given on the degree of dominance and heterotic effect in 12 intraspecific tomato hybrids F1 for the length of vegetation period, height of the main stem, number of fruiting branches, number of set fruits on the first two bunches, average fruit weight, and productivity. As a result of the conducted studies, there have been distinguished heterotic hybrids for all studied traits; however, hybrid combinations E 90/7 x Gusar, Kal. J. TNM х Saladette, Katerina х Sanmark are of the main interest as positive heterosis was observed in all their traits. Hybrid combinations with positive heterosis in such traits as: number of fruits in plant, fruit weight, pericarp thickness and number of loculi are also of practical interest. Hybrid combinations with negative heterosis are of some interest for the selection for early ripeness. These were Onix х Saladette, Narvik x Zastava, Kal. J. TNM х Saladette, Nistru x Onix, Katerina x Dana, Katerina х Sanmark. It was found that trait total yield was manifested according to positive overdominance type in 8 of 12 hybrid combinations. |
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Cuvinte-cheie dominance, heterotic effect, tomato hybrids, Breeding, dominație, efect heterozis, hibrizi de tomate, ameliorare |
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