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Description of morphological characters of lettuce (Lactuca sativa L.) genetic resources

Author

Listed:
  • E. Křístková

    (Department of Botany, Faculty of Science, Palacký University in Olomouc, Olomouc-Holice, Czech Republic)

  • I. Doležalová

    (Department of Botany, Faculty of Science, Palacký University in Olomouc, Olomouc-Holice, Czech Republic)

  • A. Lebeda

    (Department of Botany, Faculty of Science, Palacký University in Olomouc, Olomouc-Holice, Czech Republic)

  • V. Vinter

    (Department of Botany, Faculty of Science, Palacký University in Olomouc, Olomouc-Holice, Czech Republic)

  • A. Novotná

    (Department of Botany, Faculty of Science, Palacký University in Olomouc, Olomouc-Holice, Czech Republic)

Abstract

Lettuce (Lactuca sativa) is the most important crop in the group of leafy vegetables. It is characterized by considerable morphological and genetic variation. The crop comprises seven main groups of cultivars (including oilseed lettuce) differing phenotypically; they are usually described as morphotypes. Lettuce breeding is primarilly focused on various morphological features and resistance against diseases and pests. The accurate description of lettuce germplasm provides basic information useful for lettuce breeders. The construction of a lettuce descriptor list has been stimulated by the international genebank community. This list consists of 55 descriptors with 15 elucidated by figures. It provides a tool for detailed characterization of and discrimination within the intraspecific variation of L. sativa, verification of old varieties, and identification of putative duplicates and gaps in germplasm collections. These descriptors, along with descriptors of wild Lactuca species, provide an efficient analytical tool for studying the complex morphological variability of this genus and relationships among the species.

Suggested Citation

  • E. Křístková & I. Doležalová & A. Lebeda & V. Vinter & A. Novotná, 2008. "Description of morphological characters of lettuce (Lactuca sativa L.) genetic resources," Horticultural Science, Czech Academy of Agricultural Sciences, vol. 35(3), pages 113-129.
    • Handle: RePEc:caa:jnlhor:v:35:y:2008:i:3:id:4-2008-hortsci
    DOI: 10.17221/4/2008-HORTSCI
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    References listed on IDEAS

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    1. I. Doležalová & E. Křístková & A. Lebeda & V. Vinter, 2002. "Description of morphological characters of wild Lactuca L. spp. genetic resources (English-Czech version)," Horticultural Science, Czech Academy of Agricultural Sciences, vol. 29(2), pages 56-83.
    2. M. Dziechciarková & A. Lebeda & I. Doležalová & D. Astley, 2004. "Characterization of Lactuca spp. germplasm by protein and molecular markers - a review," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 50(2), pages 47-58.
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    1. M. Dziechciarková & A. Lebeda & I. Doležalová & D. Astley, 2004. "Characterization of Lactuca spp. germplasm by protein and molecular markers - a review," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 50(2), pages 47-58.

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