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  • 1
    Digitale Medien
    Digitale Medien
    Somaclonal variation versus chemically induced mutagenesis in tomato (Lycopersicon esculentum L.) (1987)
    Springer
    Theoretical and applied genetics 74 (1987), S. 733-738 
    Details
    ISSN: 1432-2242
    Schlagwort(e): Tomato ; Somaclonal variation ; Chemical mutagenesis ; Mutants
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Summary A comparison was made of the type and frequency of mutational events found in the progeny of tomato plants regenerated after one passage in vitro with those induced by chemical mutagenesis with ethyl methane sulphonate. Several mutants were recovered in the progeny of regenerated and mutagenized plants of two cultivars of tomato. They can be grouped into the following categories: seedling lethality, male sterility, resistance to Verticillium, short stature, change in number of lateral shoots or in leaf shape. The results indicate that the two sources of variability differ in their effect, changing the spectrum and frequency of the mutants as well as, at least in some cases, their pattern of segregation.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00247550
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    The histogenesis of somaclones from tomato (Lycopersicon esculentum Mill.) cotyledons (1988)
    Springer
    Protoplasma 142 (1988), S. 156-163 
    Details
    ISSN: 1615-6102
    Schlagwort(e): Tomato ; Lycopersicon esculentum ; Somaclonal variation ; Plant regeneration
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Summary A histological study ofin vitro cultured cotyledonary expiants of tomato (Lycopersicon esculentum) was performed in order to determine the site (differentiated tissue or developing callus) and the mode of plant regeneration. Results have shown that callus develops at the excision sites of cotyledonary expiants and that shoots are formed exclusively within the unorganized callus: excision areas are the only morphogenetic sites and the proximal excision is the preferred site for plant regeneration. Shoots differentiate by organogenesis within the superficial region of the callus. Few neocambial cells cooperate in the neoformation. Origin from a single cell is highly unlikely since rarely observed single activated cells never developed into shoots. Regenerated plants may be chimeras if invitro culture induces genetic diversity in the initial cells.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01290872
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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    Artikel (Nationallizenzen)
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