Haploidy in Brassica nigraKoch
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- Prakash, S. Euphytica (1973) 22: 613. doi:10.1007/BF00036663
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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.