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  • Aurantioideae  (2)
  • Key words Somatic hybridization  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    Somatic hybrid plantlets regeneration between Citrus and its wild relative, Murraya paniculata via protoplast electrofusion (1998)
    Springer
    Plant cell reports 18 (1998), S. 297-300 
    Details
    ISSN: 1432-203X
    Keywords: Key words Somatic hybridization ; RAPD ; Citrus huanglongbin ; Sexual and graft incompatibility ; Aurantioideae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Protoplasts isolated from `Page' tangelo (Minneola tangelo × clementine) cell suspension cultures were electrically fused with mesophyll protoplasts of orange jessamine [Murraya paniculata (L.) Jack]. Shoots were regenerated after 6 – 10 months of culture, but they were extremely recalcitrant to producing roots in root-induction medium. Complete plantlets were formed via micrografting. Chromosome counting of shoot tips revealed they were tetraploids (2n = 4x = 36). Glutamateoxaloacetate transaminase isozyme and randomly amplified polymorphic DNA analysis confirmed their hybridity. Orange jessamine is immune to citrus huanglongbin, a severe disease of citrus, but sexual incompatibility and limited graft compatibility exist between Citrus and orange jessamine. The cell fusion technique may make it possible to transfer the huanglongbin resistance trait from orange jessamine to Citrus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002990050575
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  • 2
    Electronic Resource
    Electronic Resource
    Intertribal hexaploid somatic hybrid plants regeneration from electrofusion between diploids of Citrus sinensis and its sexually incompatible relative, Clausena lansium (1999)
    Springer
    Theoretical and applied genetics 98 (1999), S. 581-585 
    Details
    ISSN: 1432-2242
    Keywords: Key words Somatic hybridization ; Hexaploid ; RAPD ; Chromosome number variation ; Genetic improvement ; Aurantioideae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  Chinese wampee [Clausena lansium (Lour.) Skeels], a sexually incompatible relative of citrus, is commercially cultivated in South China. In this study, embryogenic protoplasts of ‘Bonanza’ navel orange [Citrus sinensis (L.) Osbeck] were electrically fused with leaf protoplasts isolated from ‘Chicken Heart’ Chinese wampee. After 8 months of culture, fusion products regenerated into shoots. More than 70% of the shoots unexpectedly rooted well. Chromosome counting of several shoot- and root-tips revealed that their chromosome numbers were not 2n=4x=36 as expected, but 2n=6x=54, suggesting that chromosome doubling occurred rather than chromosome elimination in this intertribal fusion combination. RAPD analysis of embryoids and the leaves of unrooted and rooted shoots verified their hybridity. This is the first report of hexaploid somatic hybrid plant regeneration from fusion between diploids in Aurantioideae.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001220051107
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