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<p>Although remarkable advancements have been documented in ornamental lily breeding, the genetic merits of edible <i>Lilium brownii</i> var. <i>viridulum</i> (BB) have not been systematically investigated. To bridge this knowledge gap and pioneer dual-purpose cultivars, this study employed conventional and modern cytogenetic techniques to investigate the hybridisation characteristics, fertility, and chromosomal composition of hybrids between the edible <i>L. brownii</i> var. <i>viridulum</i> (BB) and various types of ornamental lilies (AA, OO, LL, LLO). The findings showed that both reciprocal crosses of BB × LL were successful, and the genomes of the two species could not be distinguished in the progenies using genomic in situ hybridisation (GISH). In the case of BB × AA, progeny was obtained through cut-stigma pollination, and GISH successfully differentiated the B and A genomes. However, conventional pollination and cut-stigma pollination were unsuccessful in BB × OO crosses. For LLO × BB, conventional pollination yielded a higher success rate than cut-stigma pollination. These findings suggested that BB is closely related to the <i>L. longiflorum</i> (LL) but more distantly related to Asiatic (AA) and Oriental (OO) lilies. Hence, <i>L. brownii</i> var. <i>viridulum</i> should be classified within the Leucolirion section. Additionally, the LLO × BB cross produced aneuploid offspring, which increased the potential for selection and laid the foundation for breeding lilies with both ornamental and edible traits.</p>

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Cross-compatibility between edible Lily (Lilium brownii var. viridulum) and ornamental Lily cultivars

  • 期刊论文

  • 发表日期：

    2025年12月9日

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  • Hui Li,
  • Kongzhong Xiao,
  • Changlong Xiao,
  • Lei Lei,
  • Lijie Yang

摘要

Although remarkable advancements have been documented in ornamental lily breeding, the genetic merits of edible Lilium brownii var. viridulum (BB) have not been systematically investigated. To bridge this knowledge gap and pioneer dual-purpose cultivars, this study employed conventional and modern cytogenetic techniques to investigate the hybridisation characteristics, fertility, and chromosomal composition of hybrids between the edible L. brownii var. viridulum (BB) and various types of ornamental lilies (AA, OO, LL, LLO). The findings showed that both reciprocal crosses of BB × LL were successful, and the genomes of the two species could not be distinguished in the progenies using genomic in situ hybridisation (GISH). In the case of BB × AA, progeny was obtained through cut-stigma pollination, and GISH successfully differentiated the B and A genomes. However, conventional pollination and cut-stigma pollination were unsuccessful in BB × OO crosses. For LLO × BB, conventional pollination yielded a higher success rate than cut-stigma pollination. These findings suggested that BB is closely related to the L. longiflorum (LL) but more distantly related to Asiatic (AA) and Oriental (OO) lilies. Hence, L. brownii var. viridulum should be classified within the Leucolirion section. Additionally, the LLO × BB cross produced aneuploid offspring, which increased the potential for selection and laid the foundation for breeding lilies with both ornamental and edible traits.