Journal of Genetics

, Volume 25, Issue 2, pp 241–249 | Cite as

A cytological study of the genusSorghum Pers.

I. The somatic chromosomes
  • C. Leonard Huskins
  • Stanley G. Smith


The somatic chromosome number of Johnson Grass,S. halepense, is 40.

The wild sorghums,S. virgatum, S. verticilliflorum, S. vogelianum, S. lanceolatum, S. arundinaceum, the cultivated grass,S. sudanense, and the grainSorghum “species,”S. guineense var.involutum, S. caudatum,S. papyrescens, S. Cafforum, andS. Cafforum vars.subglabrescens andmelaleucum, S. cernuum, S. Roxburghii var.hians, S. Durra, and six other varieties of these species which are not yet officially named, all have 20 chromosomes.

A number of tetraploid segments and one octoploid segment were found in root tips of diploid plants. In one tetraploid cell the chromosomes were closely paired.

One peculiar-shaped chromosome can be identified in all the species examined. It is present only in duplicate in the tetraploidS. halepense.


Somatic Chromosome Chromosome Doubling Tetraploid Cell Osmic Acid Somatic Chromosome Number 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Indian Academy of Sciences 1932

Authors and Affiliations

  • C. Leonard Huskins
    • 1
  • Stanley G. Smith
    • 1
  1. 1.Department of BotanyMcGill UniversityMontreal

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