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Published in Crop Sci 27:435-439 (1987)
© 1987 Crop Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Primary Trisomics in Sugarbeet. II. Cytological Identification1

I. Romagosa, L. Cistue, T. Tsuchiya, J. M. Lasa and R. J. Hecker2

Cytological identification of primary trisomics is an important part in the cytogenetic study of a species. The objective of this study was the Cytological identification of nine primary trisomic types in sugarbeet (Beta vulgaris L.). Karyotype analyses were conducted in somatic metaphase and late-prophase cells. All nine types of primary trisomics in sugarbeet were cytologically identified by means of somatic karyotype analysis. Not all extra chromosomes could be identified with certainty at metaphase because of their similarity in size and arm ratio. Somatic prophase analysis was found to be useful in confirming the results of metaphase analysis of the extra chromosome present in some trisomic types.

Key Words: Beta vulgaris L. • Karyotype analysis • Chromosome morphology • Aneuploidy

1 Contribution from Aula Dei Exp. Stn., Zaragoza, Spain; USDAARS; and the Dep. of Agronomy, Colorado State Univ. Supported in part by the U.S. Spain Program of Cooperation in Science and Technology, under the cooperative research project III P 3040.

2 Geneticists (I.R., L.C.), Aula Dei Exp. Stn., Zaragoza, Spain; professor of Agronomy (T.T.), Colorado State Univ., Fort Collins, CO 80523; geneticist (J.M.L.) Aula Dei Exp. Stn., Zaragoza, Spain; and geneticist (R.J.H.), USDA-ARS, Fort Collins, CO 80523.

Received for publication June 19, 1986.


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J. M. McGrath, D. Trebbi, A. Fenwick, L. Panella, B. Schulz, V. Laurent, S. Barnes, and S. C. Murray
An Open-Source First-Generation Molecular Genetic Map from a Sugarbeet x Table Beet Cross and Its Extension to Physical Mapping
Crop Sci., January 1, 2007; 47(Supplement_1): S-27 - S-44.
[Abstract] [Full Text] [PDF]


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