Variation in seed protein subunits among species of the genus Fagopyrum Mill

Jian Hui Li, Qing Fu Chen, F. J. Zeller

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7 Scopus citations


Seed protein subunits of 75 accessions belonging to ten species of buckwheat (seven species of the big-achene group and three of the small-achene group) were studied by means of SDS-PAGE. The subunits varied greatly both within a species and among different species. The seven buckwheat species of the big-achene group have 42 different subunits whereas those of the small-achene group have only 16. Each buckwheat species has at least a few unique subunits, which could be used for species identification in the genus Fagopyrum. In the small-achene group, F. gracillipes and F. pleioramosum are closely related. Based on the number, distribution, and cluster analysis of the seed protein subunits, common buckwheat, wild common buckwheat, F. esculentum var. homotropicum, F. zuogongense, and F. megaspartanium are close to one another and tartary buckwheat, wild tartary buckwheat, F. plius, F. cymosum, and F. giganteum are also close to each other, supporting the hypothesis that F. megaspartanium and F. pilus are ancestral species of common buckwheat and tartary buckwheat, respectively.

Original languageEnglish
Pages (from-to)193-202
Number of pages10
JournalPlant Systematics and Evolution
Issue number3-4
StatePublished - Sep 2008


  • Common buckwheat
  • Origin and evolution
  • Protein subunit
  • Seed protein
  • Tartary buckwheat
  • Wild buckwheat


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