Repetitive DNA in Cichorieae (Compositae) |
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| Authors: | Konrad Bachmann H James Price |
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| Institution: | (1) Premedical Biology Program, University of Heidelberg, Germany;(2) Department of Plant Sciences, Texas A & M University, 77843 College Station, Texas, USA |
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| Abstract: | Thermally denatured DNA of 11 species of Cichorieae (Compositae) was allowed to renature at 69° C in 0.8 M Na+. Two distinct fractions of repetitive DNA (fast:  105 repetitions, intermediate: 103 repetitions) were found in all species. The remaining (slow) fraction comprises 26 to 58% of the genome. The relative amounts of fast and intermediate fractions maintain constant proportions to the slow fraction except for saltatory changes, especially halvings in species with reduced genome sizes. |
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