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Assessment of genetic fidelity in regenerants from two Vitis vinifera cultivars (Articolo in rivista)

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Assessment of genetic fidelity in regenerants from two Vitis vinifera cultivars (Articolo in rivista) (literal)

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Gribaudo, I., Torello Marinoni, D., Gambinio, G., Mannini, F., Akkak, A., Botta, R. (2009)
Assessment of genetic fidelity in regenerants from two Vitis vinifera cultivars
in Acta horticulturae; International Society for Horticultural Science (ISHS), Leuven (Belgio)
(literal)

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Gribaudo, I., Torello Marinoni, D., Gambinio, G., Mannini, F., Akkak, A., Botta, R. (literal)

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Proc. 9th International Conference on Grape Genetics and Breeding, Udine 2006 (literal)

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Dipartimento Colture Arboree Università di Torino Via L. da Vinci, 44 I-10095 Grugliasco (TO), Italy (literal)

Titolo

Assessment of genetic fidelity in regenerants from two Vitis vinifera cultivars (literal)

Abstract

Genetic stability of regenerants is a fundamental feature when somatic embryogenesis is used for regeneration after genetic transformation, as well as for germplasm cryopreservation and for virus eradication. On the contrary, somatic embryogenesis has been used in breeding strategies based on the exploitation of somaclonal variations. In order to assess the genetic fidelity of regenerants and the possibility of off-type somaclones we applied molecular typing on a number of anther and ovary-derived grapes. Plantlets were obtained by indirect somatic embryogenesis from anthers and ovaries of Grignolino and Dolcetto (Vitis vinifera L.). Thirty-seven lines of Grignolino and 9 of Dolcetto were evaluated through SSR analysis using 20 nuclear microsatellite loci for Grignolino and 9 for Dolcetto. All checked samples generated the same SSR profile of the cultivar and clone of the original explant. AFLP assays were also performed on 14 lines of Grignolino using two primer combinations for selective amplification. None of AFLP bands produced showed polymorphism among the lines. In addition, an experimental vineyard was planted in spring 2005 with plants from the same lines. No major difference between regenerants and control plants was observed so far. Further analyses are in progress. (literal)

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