Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Partitioning and diversity of nuclear and organelle markers in native and introduced populations of Epipactis helleborine (Orchidaceae)
Autore:
Squirrell, J; Hollingsworth, PM; Bateman, RM; Dickson, JH; Light, MHS; MacConaill, M; Tebbitt, MC;
Indirizzi:
Royal Bot Garden, Edinburgh EH3 5LR, Midlothian, Scotland Royal Bot Garden Edinburgh Midlothian Scotland EH3 5LR dlothian, Scotland Univ Glasgow, Inst Biomed & Life Sci, Div Environm & Evolutionary Biol, Glasgow G12 8QQ, Lanark, Scotland Univ Glasgow Glasgow Lanark Scotland G12 8QQ ow G12 8QQ, Lanark, Scotland Nat Hist Museum, Dept Bot, London SW7 5BD, England Nat Hist Museum London England SW7 5BD Dept Bot, London SW7 5BD, England Univ Ottawa, Profess Training Serv, Ottawa, ON K1N 6N5, Canada Univ Ottawa Ottawa ON Canada K1N 6N5 ing Serv, Ottawa, ON K1N 6N5, Canada Brooklyn Bot Garden, Brooklyn, NY 11225 USA Brooklyn Bot Garden Brooklyn NY USA 11225 Garden, Brooklyn, NY 11225 USA
Titolo Testata:
AMERICAN JOURNAL OF BOTANY
fascicolo: 8, volume: 88, anno: 2001,
pagine: 1409 - 1418
SICI:
0002-9122(200108)88:8<1409:PADONA>2.0.ZU;2-K
Fonte:
ISI
Lingua:
ENG
Soggetto:
CHLOROPLAST DNA PHYLOGEOGRAPHY; L CRANTZ ORCHIDACEAE; GENETIC-VARIATION; MITOCHONDRIAL-DNA; INTRASPECIFIC VARIATION; COLONIZATION HISTORY; ALLOZYME MARKERS; ASTERACEAE; EUROPE; DIFFERENTIATION;
Keywords:
allozymes; chloroplast DNA; colonization; founder effects; F-ST; pollen to seed flow ratio;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
78
Recensione:
Indirizzi per estratti:
Indirizzo: Hollingsworth, PM Royal Bot Garden, 20A Inverleith Rd, Edinburgh EH3 5LR, Midlothian, Scotland Royal Bot Garden 20A Inverleith Rd Edinburgh Midlothian Scotland EH3 5LR
Citazione:
J. Squirrell et al., "Partitioning and diversity of nuclear and organelle markers in native and introduced populations of Epipactis helleborine (Orchidaceae)", AM J BOTANY, 88(8), 2001, pp. 1409-1418

Abstract

Variability of allozymes (1170 individuals, 47 populations) and chloroplast DNA (692 individuals, 29 populations) was examined in native European andintroduced North American populations of Epipactis helleborine (Orchidaceae). At the species level, the percentage of allozyme loci that were polymorphic (P-99) was 67%, with a mean of 2.11 alleles (A) per locus, and an expected heterozygosity (H-exp) of 0.294. At the population level, mean P-99 = 56%, mean A = 1.81, and mean H-exp = 0.231. Although field observations suggest that self-pollination occurs frequent),, populations had a genetic structure consistent with Hardy-Weinberg ex pectations and random mating (meanF-IS = 0.002). There was significant deviation from panmixia associated with population differentiation (mean F-ST = 0.206). The distribution of two chloroplast haplotypes showed that 15 of the 29 populations were polymorphic. Using both nuclear and organelle F-IT estimates, a. pollen to seed flow ratio of 1.43: 1 was calculated. This is very low compared with published estimates for other plant groups, consistent with the high dispersability oforchid seeds. Finally, there was no evidence for a genetic bottleneck associated with the introduction of E helleborine to North America.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 20/09/20 alle ore 23:23:59