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

文献类型： 外文期刊

作者： Liu, Wu-Lin 2 ; Wu, Li-Fang 1 ; Wu, Hong-Zhi 3 ; Zheng, Si-Xiang 4 ; Wang, Ji-Hua 1 ; Liu, Fei-Hu 2 ;

作者机构： 1.Yunnan Acad Agr Sci, Flowers Res Inst, Kunming 650205, Peoples R China

2.Yunnan Univ, Fac Life Sci, Kunming 650091, Peoples R China

3.Yunnan Agr Univ, Coll Hort & Landscape, Kunming 650201, Peoples R China

4.Guizhou Acad Agr Sci, Inst Hort Res, Guiyang 550006, Peoples R China

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

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