A Cytotaxonomic Study on Chinese Endemic Species of Hemerocallis (Liliaceae)

A Cytotaxonomic Study on Chinese Endemic Species of Hemerocallis (Liliaceae)

Xiong Zhi-ting, Chen Sing-chi, Hong De-yuan

Received:1900-01-01 Revised:1900-01-01 Online:1997-05-10 Published:1997-05-10
Contact: Xiong Zhi-ting

Abstract

Abstract:

Disagreement exists among research workers in regard to the taxonomic relationship among three Chinese endemic species of Hemerocallis : H. plicata , H. forrestii and H.

multiflora. The present authors attempt to resolve this problem based on a study on kary-

otypes. The karyotype formulas of H. plicata, H. forrestii and H. multiflora are respec-

tively 2n = 12m + 8sm + 2T, 2n = 8m + 12sm + 2T and 2n = 12m + 4sm + 4st + 2T, in which

the T chromosomes (No 11 ) of all the three species have microsatellites at the centromeric

end. The Euclidean distances of chromosome complements are 0. 2728 between H. plicata

and H.forrestii ,0. 4501 between H. plicata and H. multiflora and 0. 5741 between H.

forrestii and H. multiflora. These data clearly indicate that H. plicata is more closely related to H. forrestii than to H. multiflora, and that H. multiflora is more advanced than

the other two species,for the karyotype of H. multiflora is more asymmetical.

Key words: Hemerocallis, Chinese endemic species, Karyotype

Xiong Zhi-ting, Chen Sing-chi, Hong De-yuan. A Cytotaxonomic Study on Chinese Endemic Species of Hemerocallis (Liliaceae)[J]. .

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A Cytotaxonomic Study on Chinese Endemic Species of Hemerocallis (Liliaceae)

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