Correlation of saponin content and Fusarium resistance in hybrids from different ploidy levels of Lilium Oriental

文献类型： 外文期刊

第一作者： Wu, Li-Fang

作者： Wu, Li-Fang;Wang, Ji-Hua;Liu, Wu-Lin;Liu, Fei-Hu;Wu, Hong-Zhi;Zheng, Si-Xiang

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关键词： saponin;genotype;diploid;tetraploid;chromosomal variation;pathogenic resistance;gene resource

期刊名称：SCIENTIA HORTICULTURAE （ 影响因子：3.463； 五年影响因子：3.672 ）

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收录情况： SCI

摘要： Lilium Oriental is of great commercial value, but large losses in production can result from its susceptibility to diseases caused by Fusarium ssp. Here we report a mutant of Lilium Oriental resistant to Fusarium, Cai-74, which was generated from crossing tetraploid (from 'Star fighter') and diploid ('Cor. Amore' X 'Acapulco') plants. Hybrid progeny were screened via inoculating Fusarium oxysporum into tissue cultured plantlets in a greenhouse. Although Cai-74 had a saponin content of 3.81 mg g(-1), which is much higher than its parents, the highly Fusarium-resistant wild species Lilium dauricum had the highest content of 4.11 mg g(-1) among the tested genotypes. Cai-74 had a 3A karyotype rather than 3B found in normal plants of Lilium Oriental. Taken together, our results suggest that Cai-74 bears a chromosomal variation in its structure, and that the saponin content in the lily scales correlate with the Fusarium resistance of Lilium Oriental. Cai-74 could be used as a gene resource for breeding Fusarium-resistant cultivars of Lilium Oriental

分类号： S6

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