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The Molecular Genetic Basis of Flowering Time Variation in Brassica Species

  • T. C. Osborn
  • L. Lukens
Chapter
Part of the Biotechnology in Agriculture and Forestry book series (AGRICULTURE, volume 52)

Abstract

One of the most striking features of the Brassica genus is the wide range of morphological diversity within cultivated species. Different morphs have been selected for a variety of uses, including as vegetables, oilseeds, forages, and condiments. This variation is most apparent within B. rapa (syn. campestris; n = 10) and B. oleracea (n = 9), where broad, parallel diversity exists for many vegetable forms (Fig. 1). Brassica napus (n = 19), the amphidiploid species derived from hybridization of B. rapa and B. oleracea (U 1935) also includes diverse crop forms, such as winter and spring oilseed rape, rutabagas, and fodder rape. Many different components of plant growth and development contribute to this morphological variation, and each of these components may be under complex genetic control. Thus, it has been difficult to obtain a comprehensive picture of the genetic control of morphological diversity in Brassica crops. However, a major component of this diversity is variation in flowering time, and for this trait considerable progress in our understanding has been made.

Keywords

Flowering Time Brassica Species Quantitative Trait Locus Effect Rapid Cycling Quantitative Trait Locus Allele 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2003

Authors and Affiliations

  • T. C. Osborn
    • 1
  • L. Lukens
    • 1
  1. 1.Department of AgronomyUniversity of WisconsinMadisonUSA

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