2013•Shanxi nongye kexueRequires access

Chromosome Number Identification and Karyotype Analysis of the Taihang Mountain Wild Hemerocallis

Yunshan Wang

Abstract

Nine wild Hemerocallis species were collected from Taihang Mountain range in Shanxi Province.By the conventional squashing method,seven were identified triploid,two diploid,and no tetraploid.They were identified to 4 species.The karytotypes of one triploid and one diploid were analyzed.The results showed that karyotype formula and the relative length of Hemerocallis chromosome were: Zuoquan No.1(Hemerocallis lilioasphodelus L.): 2n=2x=22=10m+12sm,4L+2M2+12M1+4S;Yangcheng No.1(Hemerocallis fulva L.): 2n=3x=33=24m+9 sm,3L+15M2+12M1+3S.The index of karyotype asymmetry were 61.64% and 60.26%.The tested two species of Hemerocallis belong to 2B type.

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Key concepts: Karyotype, Ploidy, Biology, Chromosome, Botany, Chromosome number, Genetics, Gene