Hostname: page-component-848d4c4894-nr4z6 Total loading time: 0 Render date: 2024-05-25T13:36:02.138Z Has data issue: false hasContentIssue false
  • English
  • Français

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

Summary

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

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

REFERENCES

Burnham, C. R. (1934). Cytogenetic studies of an interchange between chromosomes 8 and 9 in maize. Genetics 19, 420–447.CrossRefGoogle ScholarPubMed
Burnham, C. R. (1956). Chromosome interchanges in plants. Botanical Review 22, 419–552.CrossRefGoogle Scholar
Burnham, C. R. (1962). Discussions in cytogenetics. Minneapolis: Burgess Publishing Co.Google Scholar
Cochran, D. G. (1976). Disjunction types and their frequencies in two heterozygous reciprocal translocations of Blattella germanica (L.). Chromosoma (Berl.) 59, 129–135.CrossRefGoogle ScholarPubMed
Cochran, D. G. (1977). Patterns of disjunction frequencies in heterozygous reciprocal translocations from the German Cochroach. Chromosoma (Berl.) 62, 191–198.CrossRefGoogle Scholar
Dennhöfer, L. (1975). Inherited preferential segregation in translocation heterozygotes of the mosquito, Cidex pipiens L. Theoretical and Applied Genetics 45, 250–253.CrossRefGoogle Scholar
Endrizzi, J. E. (1974). Alternate-1 and alternate-2 disjunction in heterozygous reciprocal translocations. Genetics 77, 55–60.CrossRefGoogle ScholarPubMed
Hagberg, A. (1954). Cytogenetic analysis of erectoides mutations in barley. Acta Agricultural Scandinavia 49, 472–490.CrossRefGoogle Scholar
John, B. & Lewis, K. R. (1965). The meiotic system. Protoplasmatologia VI/FI. Vienna: Springer.CrossRefGoogle Scholar
Lacadena, J. R. & Candela, M. (1977). Centromere co-orientation at metaphase I in interchange heterozygotes of rye, Secale cereale L. Chromosoma (Berl.) 64, 175–189.CrossRefGoogle Scholar
Robinson, A. S. (1976). Progress in the use of chromosomal translocations for the control of insect pests. Biological Reviews 51, 1–24.CrossRefGoogle ScholarPubMed
Ross, M. H. & Cochran, D. G. (1975). Two new reciprocal translocations in German cockroach. Journal of Heredity 66, 79–88.CrossRefGoogle ScholarPubMed
Sakai, R. K., Baker, R. H., Mian, A. & Said, S. (1972). Sterility enhancement in themosquito Culex tritaeniorhynchus. Canadian Journal of Genetics and Cytology 14, 215–220.CrossRefGoogle Scholar
Sybenga, J. (1968). Orientation of interchange multiples in Secale cereale. Heredity 23, 73–79.CrossRefGoogle Scholar
Sybenga, J. (1975). Meiotic configurations. Berlin–Heidelberg–New York: Springer.CrossRefGoogle Scholar
Thompson, J. B. (1956). Genotypic control of chromosome behaviour in rye. II. Disjunction. at meiosis in interchange heterozygotes. Heredity 10, 99–108.CrossRefGoogle Scholar