title: Phenotypic variation and diversity of Magnolia sprengeri Pamp. in native habitat.
abstract: The population of Magnolia sprengeri individuals deceased drastically in the late 20th century because of the widespread harvest for traditional Chinese medicinal recipes. In this study, the levels of phenotypic variation and the genetic structure of 2 populations of M. sprengeri were estimated. The phenotypic variation of M. sprengeri characteristics was nonsynchronous, with a coefficient of variation for 37 characters from 9.55-35.87%. The variance stabilizing transformation value ranged from 0.034-52.344%. The variation contribution within the population was greater than the contribution among the population; the among-population rate was 2.864%, while the within-population rate was 15.849%; values of repeatability for among-population and within-population were 0.430 and 0.098, respectively. This indicates that more variation arose from within-population and that population repeatability was much greater than individual repeatability. Variation in the flower organ was greater than that in the leaf organ; this means that vegetative variation was more stable than reproductive variation. Variation in the southern population was greater than that in the northern population.
authors.affiliation: Northwest A&F University, Yangling, Shaanxi, China.
authors.forename: M
authors.initials: M
authors.lastname: Yang
authors.affiliation: Northwest A&F University, Yangling, Shaanxi, China.
authors.forename: S G
authors.initials: SG
authors.lastname: Shi
authors.affiliation: Northwest A&F University, Yangling, Shaanxi, China.
authors.forename: W
authors.initials: W
authors.lastname: Liu
authors.affiliation: Northwest A&F University, Yangling, Shaanxi, China.
authors.forename: M
authors.initials: M
authors.lastname: Zhang
authors.affiliation: Northwest A&F University, Yangling, Shaanxi, China.
authors.forename: L
authors.initials: L
authors.lastname: Gou
authors.affiliation: Northwest A&F University, Yangling, Shaanxi, China.
authors.forename: Y X
authors.initials: YX
authors.lastname: Kang
authors.affiliation: Northwest A&F University, Yangling, Shaanxi, China ljj@nwsuaf.edu.cn.
authors.forename: J J
authors.initials: JJ
authors.lastname: Liu
mesh_terms: D017753:Ecosystem; D035264:Flowers / Q000235:genetics*; D014644:Genetic Variation; D005828:Genetics, Population; D031566:Magnolia / Q000235:genetics*; D010641:Phenotype