The chromosomes ofCunninghamia konishii,C. lanceolata,andTaiwania cryptomerioides (Taxodiaceae) |
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| Authors: | S E Schlarbaum T Tsuchiya |
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| Institution: | (1) Department of Florestry, Wildlife and Fisheries, University of Tennessee, 37901-1071 Knoxville, TN, USA;(2) Department of Agronomy, Colorado State University, 80523 Fort Collins, CO, USA |
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| Abstract: | Karyotype analyses were conducted onCunninghamia konishii, Cunninghamia lanceolata, andTaiwania cryptomerioides, all members ofTaxodiaceae. The somatic chromosome number was found to be 2n = 2x = 22 in all species which concurrs with previous reports. The karyotypes are generally asymmetrical with the smaller chromosomes being more submedian than the larger ones. Chromosomes with unusual or specific structures, thought to be associated with the nucleolar organizing region, were found in each species.Cunninghamia species have a marker chromosome pair with an unusually long secondary constriction.Taiwania has an unusually long kinetochore region present in a submedian chromosome pair. |
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| Keywords: | Conifers Taxodiaceae Cunninghamia Taiwania Chromosome numbers karyotype analysis specific chromosome type |
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