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Endrizzi JE, Ray DT, Gathman AC. Centromere Orientation of Quadrivalents of Heterozygous Translocations and an Autoploid of GOSSYPIUM HIRSUTUM L. Genetics. 1983;105(3):723-31doi: 10.1093/genetics/105.3.723.
Endrizzi, J. E., Ray, D. T., & Gathman, A. C. (1983). Centromere Orientation of Quadrivalents of Heterozygous Translocations and an Autoploid of GOSSYPIUM HIRSUTUM L. Genetics, 105(3), 723-31. https://doi.org/10.1093/genetics/105.3.723
Endrizzi, J E, et al. "Centromere Orientation of Quadrivalents of Heterozygous Translocations and an Autoploid of GOSSYPIUM HIRSUTUM L." Genetics vol. 105,3 (1983): 723-31. doi: https://doi.org/10.1093/genetics/105.3.723
Endrizzi JE, Ray DT, Gathman AC. Centromere Orientation of Quadrivalents of Heterozygous Translocations and an Autoploid of GOSSYPIUM HIRSUTUM L. Genetics. 1983 Nov;105(3):723-31. doi: 10.1093/genetics/105.3.723. PMID: 17246172; PMCID: PMC1202182.
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Genetics. 1983 Nov;105(3):723-31. doi: 10.1093/genetics/105.3.723.

Centromere Orientation of Quadrivalents of Heterozygous Translocations and an Autoploid of GOSSYPIUM HIRSUTUM L.

Genetics

J E Endrizzi, D T Ray, A C Gathman

Affiliations

  1. Plant Sciences Department and Committee on Genetics, University of Arizona, Tucson, Arizona 85721.

PMID: 17246172 PMCID: PMC1202182 DOI: 10.1093/genetics/105.3.723

Abstract

Cytological observations of quadrivalents of heterozygous translocations in Gossypium hirsutum L. demonstrate that, in addition to alternate-1 and alternate-2 orientations, a third alternate orientation (alternate-3), which occurs as a three-dimensional, V-type configuration, can be identified.-Two additional types of disjunctions, the centromere orientations of which are rotational modifications of either adjacent or alternate configurations, were also observed in quadrivalents of a translocation heterozygote. These two types are rare, and both appear in the form of the Roman numeral X . The X and the alternate-3 types also occur in quadrivalents of an autoploid of G. hirsutum.-The two X types, along with adjacent-1, adjacent-2, alternate-1 and alternate-2 orientations, represent the six possible types of planar 2 x 2 random orientation of the four centromeres of a quadrivalent. Including the three-dimensional alternate-3 type, there are seven types of orientation.

References

  1. Genetics. 1974 May;77(1):55-60 - PubMed

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