Karyotype of Different Ploidy <em>Dioscorea zingiberensis</em> C. H. Wright

doi:10.3969/j.issn.1005-3395.2012.03.008

Home > Archive>Volume 20, Issue 3, 2012 >256-262. DOI:10.3969/j.issn.1005-3395.2012.03.008

Karyotype of Different Ploidy Dioscorea zingiberensis C. H. Wright
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                        10.3969/j.issn.1005-3395.2012.03.008
                    
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                        HUANG Xian-lanHUANG Xian-lan
Institute of Root and Tuber Crops, Yunnan Agriculture University, China
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GUO Hua-chunGUO Hua-chun
Institute of Root and Tuber Crops, Yunnan Agriculture University, China
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The karyotypes of one wild and four cultivated lines in Dioscorea zingiberensis C. H. Wright were studied by root tip squash technique. The results showed that the wild was diploid with karyotype formula of 2n=20=14m+6sm. The four cultivated lines were tetraploid, and their karyotype formulae were followed as: 2n=40=20m+18sm+2st for A02-6 line, 2n=40=16m+22sm+2st for A05-6 line, 2n=40=18m+20sm+2st for A09-2-1 line, and 2n=40=16m+22sm+2st for 'hongwei’ line. The karyotype types in either wild or four cultivated lines were 2B, and there were large differences in karyotype not only between the diploid and tetraploid, but also within the four tetraploid lines.

Key words:Dioscorea zingiberensis C. H. Wright;Chromosome;Karyotype;Diploid;Tetraploid

Reference

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黄贤兰,郭华春.不同倍性盾叶薯蓣的核型分析[J].热带亚热带植物学报,2012,20(3):256~262

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Received:June 20,2011
Revised:October 08,2011
Adopted:February 09,2012
Online: May 28,2012
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