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Titolo:
Fine-scale genetic structure in Pinus clausa (Pinaceae) populations: effects of disturbance history
Autore:
Parker, KC; Hamrick, JL; Parker, AJ; Nason, JD;
Indirizzi:
Univ Georgia, Dept Geog, Athens, GA 30602 USA Univ Georgia Athens GA USA 30602 Georgia, Dept Geog, Athens, GA 30602 USA Univ Georgia, Dept Bot, Athens, GA 30602 USA Univ Georgia Athens GA USA 30602 Georgia, Dept Bot, Athens, GA 30602 USA Univ Georgia, Dept Genet, Athens, GA 30602 USA Univ Georgia Athens GA USA30602 eorgia, Dept Genet, Athens, GA 30602 USA Iowa State Univ, Dept Bot, Ames, IA 50011 USA Iowa State Univ Ames IA USA50011 tate Univ, Dept Bot, Ames, IA 50011 USA
Titolo Testata:
HEREDITY
, volume: 87, anno: 2001,
parte:, 1
pagine: 99 - 113
SICI:
0018-067X(200107)87:<99:FGSIPC>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
GLEDITSIA-TRIACANTHOS L; PONDEROSA PINE; JACK PINE; SAND PINE; SPATIAL AUTOCORRELATION; ALLOZYME POLYMORPHISMS; POLLEN MOVEMENT; SEED DISPERSAL; NATURAL STANDS; BLACK SPRUCE;
Keywords:
disturbance history; gene dispersal; genetic structure; Pinus clausa; spatial autocorrelation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
49
Recensione:
Indirizzi per estratti:
Indirizzo: Parker, KC Univ Georgia, Dept Geog, Athens, GA 30602 USA Univ Georgia Athens GA USA 30602 pt Geog, Athens, GA 30602 USA
Citazione:
K.C. Parker et al., "Fine-scale genetic structure in Pinus clausa (Pinaceae) populations: effects of disturbance history", HEREDITY, 87, 2001, pp. 99-113

Abstract

Spatial autocorrelation analyses of 12 allozyme loci were used to compare genetic structure within populations of two varieties of Pinus clausa. P. clausa var. immuginata populations tend to be uneven-aged, with continuous recruitment in small gaps created by wind damage, whereas P. clausa var. clausa populations are more even-aged, with recruitment postdating periodic canopy fires. Three var. immuginata populations and three matched pairs of var. clausa populations, including both a mature and a nearby recently burnedpopulation, were examined. Aggregation of multilocus genotypes at small distances was evident in all young var. clausa populations. Little inbreedingwas apparent among juveniles or adults in these populations; their geneticstructure is likely to have resulted from limited seed dispersal. Genotypes were not significantly spatially structured in nearby matched mature populations. Genetic structure was less evident in var. immuginata populations. Aggregated genotypes were only apparent in the population where patches included juveniles of similar ages; dense juvenile clumps in the other two var. immuginata populations comprised a variety of ages. Interannual variability in allele frequencies of surviving seedlings may account for the absence of genetic structure in these populations.

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Documento generato il 04/12/20 alle ore 08:54:03