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Investigation on the frequency of B-chromosomes inImpatiens balsamina and the appearance of single flowers on double varieties

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Abstract

A survey of 17 varieties ofImpatiens balsamina for their chromosomal status and frequency of reversion of double flowering to single type was carried out on a local garden population. All the varieties are diploid with 2n=14. Two supernumerary chromosomes, which invariably form a bivalent that is indistinguishable from bivalents of the normal complement, were present in almost all the 12 double flowering varieties while single varieties had only the normal chromosomal complement. Their frequency in double varieties has been studied. No double flower was noted on any single type while single flowers were present in varying frequency on plants of double varieties. The highest frequency of this reversion as well as of supernumerary chromosomes was noted in var. “Deep pink double”. Possible origin of supernumerary chromosomes and their role in this species is discussed.

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References

  • Darlington, C. D. (1956). Chromosome botany. George Allen & Unwin, London

    Google Scholar 

  • Darlington, C. D. & A. P. Wylie (1955). Chromosome atlas of flowering plants. George Allen & Unwin, London.

    Google Scholar 

  • Fernandes, A. (1949). Le problème de l'hétérochromatinisation chezNavcissus bulbocodium L.Bol. da Soc. Broteriana 23: 5–88.

    Google Scholar 

  • Jones, K. & J. B. Smith (1966). The cytogeography ofImpatiens L. (Balsaminaceae).Kew. Bull. 20 (I): 63–72.

    Google Scholar 

  • Lewis, H. (1951). The origin of supernumerary chromosomes in natural populations ofClarhia elegans.Evolution 5: 142–157.

    Google Scholar 

  • Lewis, H. (1953). Quatitative variation in wild genotypes ofClarkia. IUBS Symposium on genetics of population structure, Paris, 114–125.

  • Roman, H. (1947). Mitotic non-disjunction in the case of interchanges involving B-type chromosomes in maize.Genetics 33: 391–409.

    Google Scholar 

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Authors and Affiliations

  1. Cytogenetics Laboratory, Botany Department, University of Lucknow, Lucknow, India

    Satendra S. Raghuvanshi & Sheila Joshi

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  1. Satendra S. Raghuvanshi
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  2. Sheila Joshi
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Raghuvanshi, S.S., Joshi, S. Investigation on the frequency of B-chromosomes inImpatiens balsamina and the appearance of single flowers on double varieties. Genetica 39, 544–552 (1968). https://doi.org/10.1007/BF02324485

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  • DOI: https://doi.org/10.1007/BF02324485

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