00902naa a2200157 a 450000100080000000500110000800800410001910000210006024500710008126000090015252004780016165000140063965000140065370000240066777300530069118336582013-09-27       1978    bl ---       0--  u    #d1 aNASSAR, N. M. A.  aInstability of chromosome number in Nothoscordum fragans in Kunth.  c1978  aThe study of the somatic complement of Nothoscordum fragans showed the occurrence of mosaicism in root tips. Besides common biotype 2n=13m+6t, cells with different chromosome constitutions were found: 2n=12m+8t, 2n=12m+6t. It is assumed that these complements were derived from the 2n=19, by centric fission in the first case and elimination of a m chromosome in the second one. Preliminary observations of meiosis showed different chromosome constitutions in Anaphases II.  aCitologia  aGenética1 aAGUIAR, M. L. R. de  tCytologia, Tokyogv. 43, n. 2, p. 371-376, 1978.