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Aneuhaploids in bread wheat

Published online by Cambridge University Press:  14 April 2009

T. E. Miller  and
Victor Chapman
T. E. Miller
Affiliation:
Plant Breeding Institute, Cambridge
Victor Chapman
Affiliation:
Plant Breeding Institute, Cambridge
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Summary

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Euploid and aneuploid plants of Triticum aestivum, variety Chinese Spring were pollinated with, pollen of Hordeum bulbosum. Euhaploids and aneuhaploids of Chinese Spring were obtained from the crosses. Meiotic chromosome pairing was analysed in 25 different aneuhaploids and the results were compared with those obtained from euhaploids. The evidence provided by the meiotic studies was used to identify chromosomes whose activities affected the genetic control of chromosome pairing.

Meiosis was abnormal in a 23-chromosome aneuhaploid and in the 22-chromosome sectors of a chimaeral plant. Both plants were thought to have resulted from the incomplete elimination of the genome of H. bulbosum from hybrid embryos. It is suggested that the meiotic abnormalities in the two aneuhaploids were caused by the residual barley chromosomes.

Type
Research Article
Information
Genetics Research , Volume 28 , Issue 1 , August 1976 , pp. 37 - 45
Copyright
Copyright © Cambridge University Press 1976

References

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