Ribosomal DNA variation in foxtail millet, Setaria italica (L.) P. Beauv., and a survey of variation from Europe and Asia |
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| Authors: | K Fukunaga E Domon M Kawase |
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| Institution: | (1) Plant Germplasm Institute, Faculty of Agriculture, Kyoto University, Nakajo 1, Mozume-cho, Muko, Kyoto 617, Japan Fax: +81 75-932-8063 E-mail: fukunaga@mbox.kudpc.kyoto-u.ac.jp, JP;(2) Laboratory of Barley Breeding, Department of Crop Improvement, Shikoku National Agricultural Experiment Station, 3-1 Sen’yu-cho 1, Zentsuji, Kagawa 765, Japan, JP;(3) Laboratory of Plant Biotechnology, Department of Crop Improvement, Shikoku National Agricultural Experiment Station, 3-1 Sen’yu-cho 1, Zentsuji, Kagawa 765, Japan, JP |
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| Abstract: | Restriction fragment length polymorphism (RFLP) and the structure of ribosomal RNA genes (rDNA) were investigated in 117
landraces of foxtail millet, Setaria italica (L.) P. Beauv. Five RFLP phenotypes were found when the genomic DNA was digested with BamHI; these were named types I–V. Of these types I, II and III were the most frequent. Type I was mainly distributed in the
temperature zone, type II in the Taiwan-Philippines Islands and type III in South Asia. Restriction mapping of the cloned
rDNA and comparison with RFLP phenotypes showed that the different types originated from a polymorphism in the length within
the intergenic spacer (IGS) and BamHI site changes within the IGS.
Received: 28 August 1996 / Accepted: 28 February 1997 |
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| Keywords: | Foxtail millet rDNA RFLP Restriction mapping Geographical distribution |
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