Skip to main content
SpringerLink
Log in

Chromosome association in one induced and five natural tetraploids of sorghum

  • Published:
Genetica Aims and scope Submit manuscript

Abstract

A cytological analysis of chromosome association was made inS. miliaceum, S. panicoides, S. almum, S. macrochacta, S. halepense, and an induced autotetraploid ofS. cernuum all with2n=40 chromosomes. The study of pachytene chromosome associations in the first two species revealed their differentiated structure, while in the other species pachytene has not been analysed in detail. Also in their basic morphology they resembled diploid Eu-sorghums. The frequency of partner exchanges among the observed associations of four chromosomes varied from 0 to 2 and they appeared to be distributed all along the length of the chromosomes. Evidence for chromosomal differentiation was recorded and it was suggested that it might bring about increased bivalent synapsis when compared to the situation in the induced autotetraploid ofS. cernuum.

Data also indicate thatS. miliaceum has essentially autoploid behaviour and thatS. panicoides is not closely related to any diploid Eu-sorghum. Comparison of the ehromosome behaviour in induced autotetraploidS. cernuum at post-pachytene stages of meiosis with that obtaining inS. almum andS. halepense suggests that the latter specios might have undergone considerable chromosomal differentiation at the same time retaining autoploid behaviour.S. macrochaeta on the other hand, has been classified “segmental alloploid.”

Meiotic irregularities were present to a varying extent and it is considered that genetic factors are also important in determining the ultimate fertility of the tetraploids studied.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  • Celarier R. P. (1958a). Cytotaxonomic notes on the subsectionHalepensia of the genusSorghum.Bull. Torrey Bot. Club. 85: 49–62.

    Google Scholar 

  • Celarier R. P. (1958b). Cytatoxonomy ofAndropogoneae. III. SubtribeSorghum.Cytologia.23: 395–418.

    Google Scholar 

  • Chin T. C. (1946). The cytology of polyploidSorghum.Amer. Jour. Bot. 33: 611–614.

    Google Scholar 

  • Darlington C. D. (1937). Recent advances in cytology, 2nd edition, London, J. & A. Churehill Ltd.

    Google Scholar 

  • Docgett H. (1964a). Fertility improvement in autotetrapliodSorghum. I. Cultivated autotetraploids.Heredity.19: 403–417.

    Google Scholar 

  • Docgett H. (1964b). Fertility improvement in autotetraploidSorghum. II.Sorghum almum derivatives.Heredity.19: 543–558.

    Google Scholar 

  • EndrizzI J. E. (1957). Cytological studies of some species and hybrids in the Eu-sorghums.Bot. Gaz. 119: 1–10.

    Google Scholar 

  • Endrizzi J. E. (1958). The orientation of interchange complexes and quadrivalents inGossypium hirsutum andEu-Sorghum.Cytologia.23: 362–371.

    Google Scholar 

  • Gottschalk W. (1955). Die Paarung homologer Bivalente und der Ablauf von partnerwechseln in den frühen Stadien der Meiose autopolyploider Pflanzen.Zeitschr. Induktive Abstam. Vererbungslehre. 87: 1–24.

    Google Scholar 

  • Hadley H. H. (1953). Cytological relationships betweenSorghum vulgare Pers. andS. halepense.Agron. Jour. 45: 139–143.

    Google Scholar 

  • Magoon M. L. & M. S. Ramanna (1961). Comparative karyomorphology of Eu-sorghums.Caryologia.14: 391–407.

    Google Scholar 

  • Magoon M. L. & K. G. Shambulingappa (1961). Karyomorphology ofSerghum propinquum and its bearing on the origin of 40 chromosomed sorghums.Chromosoma.12: 460–465.

    Google Scholar 

  • Mouftah P. & J. D. Smith (1969). Cytological studies on the origin of Johnson grass.Canad. J. Genet. Cytol. 11: 25–29.

    Google Scholar 

  • Peters N. (1954). Zytologische Untersuchungen anSolanum tuberosum und polyploiden Wildkartoffelarten.Zeitschr. Induktive Abstam. Vererbungslehre.86: 373–398.

    Google Scholar 

  • Reddi V. R. (1967). The cytology ofSorghum macrochacta and its polyhaploid derivative.Curr. Sci. 36: 441–442.

    Google Scholar 

  • Schertz K. F. (1962). Cytology, fertility and gross morphology of the induced polyploids ofSorghum vulgare.Canad. J. Genet. Cytol. 4: 179–186.

    Google Scholar 

  • Siddiq E. A. (1967). Colchicine induced autotetraploids inSorghum vulgare.Indian J. Genet. 27: 442–451.

    Google Scholar 

  • Snowden J. D. (1955). The wild fodder sorghums of the sectionEu-Sorghum.J. Linn. Soc. Lond. 55: 191–260.

    Google Scholar 

  • Tantravahi R. V. (1968). Cytology and crossability relationships ofTripsacum. The Bussey Inst. Harvard University. Cambridge. Mass. 1–123.

    Google Scholar 

  • Venkateswarlu, J. (1962). Some aspects of the study of pachytene chromosomes. Presidential address. Botany Section.Proc. 49thIndian Sci. Congr. (Cuttack). 113–132.

  • Venkateswarlu J. & V. R. Reddi (1956). Morphology of pachytene chromosomes and meiosis inSorghum subglabrescens, aEu-Sorghum.J. Indian Bot. Soc. 35: 344–356.

    Google Scholar 

  • Venkateswarlu J. & V. R. Reddi (1968). Cytological studies ofSorghum trisomics.J. Hered. 59: 179–182.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Botany, Andhra University, Waltair, India

    Y. R. Reddi

Authors
  1. Y. R. Reddi
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Reddi, Y.R. Chromosome association in one induced and five natural tetraploids of sorghum. Genetica 41, 321–333 (1970). https://doi.org/10.1007/BF00958915

Download citation

  • Received:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF00958915

Keywords

Search

Navigation