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Metaphase I centromere co-orientation in interchange heterozygotes of pearl millet

Published online by Cambridge University Press:  14 April 2009

Prasad R. K. Koduru
Prasad R. K. Koduru
Affiliation:
Department of Botany, Andhra University, Waltair 530 003, India
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Summary

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Using interchanges T(1, 3) and T(3, 6) of Pennisetum americanum orientation types of the interchange multiple at MI were studied in different genetic backgrounds. Orientation types alternate 1 and alternate 2, in addition to adjacent 1, adjacent 2 and indefinite could be identified for both the interchanges. The relative frequencies of various orientation types were influenced by a change in the genetic background.

For these interchanges, homologous centromeres do not seem to play a predominant role in the co-orientation of interchange multiple. The non-homologous co-orientation types were more subjected to genetic regulation than the homologous co-orientations.

Type
Research Article
Information
Genetics Research , Volume 34 , Issue 1 , August 1979 , pp. 69 - 76
Copyright
Copyright © Cambridge University Press 1979

References

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