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Genetic instability at the s locus of lycopersicon peruvianum plants regenerated from in vitro culture of anthers generation of new s specificities and s allele reversions



Genetic instability at the s locus of lycopersicon peruvianum plants regenerated from in vitro culture of anthers generation of new s specificities and s allele reversions



Heredity 49(3): 319-330



Genetic analyses were made of plants regenerated from in vitro cultures of anthers and stem internodes in 4 different self-incompatible diploid genotypes of L. peruvianum. Altogether 9 diploids, 15 tetraploids and 3 cytochimeric plants regenerated from stem internode cultures and 35 diploids, 10 tetraploids and 9 cytochimeras derived from anther culture, were analyzed. The plants regenerated from stem internode cultures had no alterations at the S-locus, whereas a high proportion of anther culture-derived regenerants carried sexually heritable changes, namely new S-specificites and S-allele reversions, the reverted S-allele showing a switch from gametophytic to sporophytic expression.

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Accession: 005515052

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