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ShadeShade-loving herbaceous perennial plant hosta (Hosta spp.) is highly preferable to gardeners for its attractive foliage. Hosta plants are phenotypically varied in a great range of leaf shapes, leaf sizes, leaf colors, and flower colors. Some hosta species are good sources of micro minerals and are considered vegetablesVegetables in some areas of Japan and Korea. Hosta plants are easy to propagate by clonal separation. Propagation by biotechnological approaches such as plant tissue culture were studied but the number of studies is limited for its commercial application. In vitroIn vitro approaches can be applied for the precise breeding of hosta plants. Hosta gardeners and independent breeders developed many hybrids using traditional breedingTraditional breeding which makes wide phenotypical variations. Breeding strategies such as mutationMutation induction, and in vitroIn vitro techniques have the potential for future breeding of hosta. Transcriptomics studies revealed the leaves and flower color forming Chalcone Isomerase (CHI) homologous gene, stamen and gynoecium developing SHATTERPROOF and AGAMOUS homologous genes, and fragrance regulating Terpene Synthase (TPS) gene. Complete chloroplast genomeChloroplast genome sequences are available in Hosta sp while the nuclear genome is still not sequenced. Diseases pests hamper hosta cultivation but there are not any resistant cultivars. The nuclear genome sequence will help to resistance genes and apply advanced breeding tools such as CRISPR to develop resistant hosta cultivars against any specific pests and diseases.

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Propagation and Breeding Approaches of Hosta spp.

  • 章节

  • 发表日期：

    2025年

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  • Hasan Mehraj,
  • Imtiaz Faruk Chowdhury,
  • Mohammad Shamim Hasan Mandal

摘要

ShadeShade-loving herbaceous perennial plant hosta (Hosta spp.) is highly preferable to gardeners for its attractive foliage. Hosta plants are phenotypically varied in a great range of leaf shapes, leaf sizes, leaf colors, and flower colors. Some hosta species are good sources of micro minerals and are considered vegetablesVegetables in some areas of Japan and Korea. Hosta plants are easy to propagate by clonal separation. Propagation by biotechnological approaches such as plant tissue culture were studied but the number of studies is limited for its commercial application. In vitroIn vitro approaches can be applied for the precise breeding of hosta plants. Hosta gardeners and independent breeders developed many hybrids using traditional breedingTraditional breeding which makes wide phenotypical variations. Breeding strategies such as mutationMutation induction, and in vitroIn vitro techniques have the potential for future breeding of hosta. Transcriptomics studies revealed the leaves and flower color forming Chalcone Isomerase (CHI) homologous gene, stamen and gynoecium developing SHATTERPROOF and AGAMOUS homologous genes, and fragrance regulating Terpene Synthase (TPS) gene. Complete chloroplast genomeChloroplast genome sequences are available in Hosta sp while the nuclear genome is still not sequenced. Diseases pests hamper hosta cultivation but there are not any resistant cultivars. The nuclear genome sequence will help to resistance genes and apply advanced breeding tools such as CRISPR to develop resistant hosta cultivars against any specific pests and diseases.