| 谢佩吾，李早文，伍爱萍，等.17个杂交兰及3个大花蕙兰品种的染色体研究[J].广东农业科学,2015,42(8):26-28 |
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17个杂交兰及3个大花蕙兰品种的染色体研究 |
| Study on chromosome of 17 cultivars of hybrid Cymbidiumand three cultivars of Cymbidium hybridium |
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| DOI： |
| 中文关键词: 倍性 染色体数目 大花蕙兰 杂交兰 |
| 英文关键词: ploidy level chromosome number Cymbidium hybridium hybrid Cymbidium |
| 基金项目: |
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| 摘要点击次数: 1569 |
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| 中文摘要: |
| 对引进的17个杂交兰及3个大花蕙兰品种进行了染色体数目及倍性分析。结果表明，杂交兰品种染
色体倍性多样化程度较高，其中二倍体品种10 个、占总数的58.8%，非整倍体品种5个、占总数的29.4%，三倍体
品种较少（仅 2 个）、占总数的11.8%；3个大花蕙兰品种中有2 个三倍体和1个四倍体。在二倍体杂交兰FG784
和四倍体大花蕙兰DB918的4 个杂交 F1 代个体中，发现3个三倍体和1个六倍体，表明在杂交兰和大花蕙兰的
杂交过程中会出现染色体自然加倍的现象，由此可以获得倍性更高的杂交后代。 |
| 英文摘要: |
| 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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