TY - JOUR
T1 - Karyotypes in Leucadendron (Proteaceae): evidence of primitiveness of the genus
AU - Liu, Hui
AU - Yan, Guijun
AU - Shan, Fucheng
AU - Sedgley, R.
PY - 2006
Y1 - 2006
N2 - Karyotypes of 27 species in Leucadendron are analysed for the first time. New chromosome counts are reported for 15 species, with 2n = 26 occurring in all of them. Karyotype analysis indicated that chromosomes of Leucadendron taxa are small in size and have predominantly median to submedian centromeres. The mean sizes of somatic metaphase chromosomes ranged from 1.05 to 2.65 mu m. Based on Stebbins' karyotype classification, 1A type was found in L. galpinii, L. muirii, L. orientale, L. platyspermum, L. rubrum, and L. salignum; 2A type in L. conicum, L. flexuosum, L. laureolum, L. meridianum, L. salicifolium, L. stelligerum, and L. teretifolium; and 2B type in L. argenteum, L. chamelaea, L. discolor, L. elimense, L. eucalyptifolium, L. floridum, L. gandogeri, L. linifolium, L. loeriense, L. macowanii, L. procerum, L. spissifolium, L. strobilinum, and L. tinctum. These types are the three most symmetrical karyotypes and are considered to be primitive. (c) 2006 The Linnean Society of London.
AB - Karyotypes of 27 species in Leucadendron are analysed for the first time. New chromosome counts are reported for 15 species, with 2n = 26 occurring in all of them. Karyotype analysis indicated that chromosomes of Leucadendron taxa are small in size and have predominantly median to submedian centromeres. The mean sizes of somatic metaphase chromosomes ranged from 1.05 to 2.65 mu m. Based on Stebbins' karyotype classification, 1A type was found in L. galpinii, L. muirii, L. orientale, L. platyspermum, L. rubrum, and L. salignum; 2A type in L. conicum, L. flexuosum, L. laureolum, L. meridianum, L. salicifolium, L. stelligerum, and L. teretifolium; and 2B type in L. argenteum, L. chamelaea, L. discolor, L. elimense, L. eucalyptifolium, L. floridum, L. gandogeri, L. linifolium, L. loeriense, L. macowanii, L. procerum, L. spissifolium, L. strobilinum, and L. tinctum. These types are the three most symmetrical karyotypes and are considered to be primitive. (c) 2006 The Linnean Society of London.
U2 - 10.1111/j.1095-8339.2006.00532.x
DO - 10.1111/j.1095-8339.2006.00532.x
M3 - Article
SN - 0024-4074
VL - 151
SP - 387
EP - 394
JO - Botanical Journal of the Linnean Society
JF - Botanical Journal of the Linnean Society
IS - 3
ER -