Genetic variation of Taxus cuspidata SIEB. et Zucc. in Korea

Citation
Sw. Lee et al., Genetic variation of Taxus cuspidata SIEB. et Zucc. in Korea, SILVAE GEN, 49(3), 2000, pp. 124-130
Citations number
34
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Plant Sciences
Journal title
SILVAE GENETICA
ISSN journal
0037-5349 → ACNP
Volume
49
Issue
3
Year of publication
2000
Pages
124 - 130
Database
ISI
SICI code
0037-5349(2000)49:3<124:GVOTCS>2.0.ZU;2-J
Abstract
Japanese yew (Taxus cuspidate SIEB. et ZUCC.) is a shade-tolerant, dioeciou s gymnosperm native to Korea, Japan, Manchuria and eastern Siberia. Five na tural populations of T. cuspidata in Korea were investigated using starch-g el electrophoresis in an attempt to determine the extent and distribution o f genetic variation. The level of genetic diversity (A = 1.7, P-95 = 45.7%, P-99 = 60%, H-o = 0.172, and H-e = 0.168) and the degree of genetic differ entiation (G(ST) = 0.067) were comparable to those of other conifers with s imilar life-histories and ecological traits. Five natural Japanese yew popu lations seemed to be in equilibrium with the expectations of HARDY-WEINBERG . Isolation by distance was detected. NEI's genetic distance, D, was positi vely correlated with geographic distance (r = 0.794, p = 0.006). Nm, the nu mber of migrants per generation, was 3.48 and 2.87, depending on estimation procedure, and is similar to values in wind-pollinated conifers. Individua l trees widely scattered around natural populations appeared to be critical to the maintenance of genetic variation in Japanese yew. Implications for the conservation of genetic diversity of T. cuspidata are discussed.