Spontaneous wheat/rye translocations from female meiotic products of hybrids between octoploid triticale and wheat |
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| Authors: | Y B Wang H Hu J W Snape |
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| Institution: | (1) Institute of Genetics, Academia Sinica, 100101 Beijing, China;(2) Cambridge Laboratory, John Innes Centre, Colney Lane, NR4 7UJ Norwich, UK;(3) Present address: Department of Applied Biology and Biotechnology, De Montfort University, Scraptoft Campus, LE7 9SU Leicester, UK |
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| Abstract: | Summary Heptaploid hybrids between octoploid triticale and wheat were backcrossed as female parents with wheat to examine the rye chromosome distribution in the resultant progenies using genomic in situ hybridization (GISH). One hundred and one backcross (BC) seeds were examined and whole rye chromosome additions and substitutions, wheat/rye centric and noncentric translocations and rye telocentric chromosomes were detected. Dicentric wheat/rye translocated chromosomes were also observed. Comparisons were made with previous results on the rye chromosome distribution from male gametes of the same cross and differences were found, where in the female derived population a deficit of plants with more than two rye chromosomes was apparent relative to the anther derived population. |
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| Keywords: | wheat/rye translocation in situ hybridization triticale x wheat hybrids Triticum aestivum Secale cereale |
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