, Volume 22, Issue 3, pp 613–614 | Cite as

Haploidy in Brassica nigraKoch

  • Shyam Prakash


Meiotic behaviour of haploid plants of Brassica nigra which arose parthenogenetically amongst the progeny of B. nigra × B. campestris, is described. The presence of two bivalents and s-s associations suggests the basic chromosome number w as six and the present x=8 number arose through the duplication of two of the original chromosomes.


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Copyright information

© H. Veenman en zonen b.v., Wageningen 1973

Authors and Affiliations

  • Shyam Prakash
    • 1
  1. 1.Cummings LaboratoryIndian Agricultural Research InstituteNew DelhiIndia

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