Occurrence of rye (Secale cereale) 350-family DNA sequences inAgropyron and otherTriticeae |
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| Authors: | Z. -Y. Xin R. Appels |
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| Affiliation: | (1) Institute of Crop Breeding and Cultivation, Chinese Academy of Agricultural Sciences, Beijing, China;(2) Division of Plant Industry, CSIRO, P.O. Box 1600, 2601 Canberra, ACT, Australia |
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| Abstract: | Evidence is presented that in the R and P genomes (Secale cereale andAgropyron cristatum, respectively) of theTriticeae there exist closely related 350-family DNA sequences in the terminal heterochromatin. This observation is compared to the relationships between these two genomes derived from a comparison of theNor and5 S DNA loci as well as the available data on morphological characters, chromosome pairing, and isozyme studies. It is concluded that the R and P genomes are not closely related and that the common presence of very similar 350-family DNA sequences reflects the parallel amplification of this family of DNA sequences. |
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| Keywords: | Angiosperms Poaceae Triticeae Secale cereale Agropyron cristatum 350-family DNA sequences R and P genome in situ hybridization Nor-loci 5 S-DNA loci relationship chromosome pairing isozymes |
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