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| Study on chromosome of 17 cultivars of hybrid Cymbidiumand three cultivars of Cymbidium hybridium |
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| Abstract: |
| Chromosome numbers and ploidy levels of 17 cultivars of hybrid Cymbidium and three cultivars ofCymbidium hybridium were analyzed. The hybrid Cymbidium had high degree of chromosome ploidy diversity，amongwhich 10 cultivars was diploid（58.8%），five and two cultivars were aneuploid（29.4%）and triploid（11.8%）respectively.Two triploid and one tetraploid in three cultivars of C. hybridium were recorded. Three triploid and one hexaploid werefound in the four hybrid F1 individuals generated from hybrid Cymbidium‘ FG784’ × C. hybridium‘ DB918’，suggestingthat the chromosome of hybrid Cymbidium and C. hybridium would be double spontaneously during their cross breeding，and from which the new cultivars with higher ploidy level might be produced. |
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