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Titolo:
ON ESTIMATION OF THE RATIO OF POLLEN TO SEED FLOW AMONG PLANT-POPULATIONS
Autore:
HU XS; ENNOS RA;
Indirizzi:
UNIV EDINBURGH,INST ECOL & RESOURCE MANAGEMENT,DARWIN BLDG,KINGS BLDG,MAYFIELD RD EDINBURGH EH9 3JU MIDLOTHIAN SCOTLAND UNIV EDINBURGH,INST ECOL & RESOURCE MANAGEMENT EDINBURGH EH9 3JU MIDLOTHIAN SCOTLAND CHINESE ACAD FORESTRY,RES INST FORESTRY BEIJING 100091 PEOPLES R CHINA
Titolo Testata:
Heredity
, volume: 79, anno: 1997,
parte:, 5
pagine: 541 - 552
SICI:
0018-067X(1997)79:<541:OEOTRO>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
GENE FLOW; PATERNAL INHERITANCE; MITOCHONDRIAL-DNA; CHLOROPLAST DNA; POLYMORPHISM; PHYLOGENIES; MIGRATION; DISTANCE; MUTATION; ALLELES;
Keywords:
BIPARENTAL GENE; MATERNAL GENE; PATERNAL GENE; POLLEN FLOW; SEED FLOW;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
32
Recensione:
Indirizzi per estratti:
Citazione:
X.S. Hu e R.A. Ennos, "ON ESTIMATION OF THE RATIO OF POLLEN TO SEED FLOW AMONG PLANT-POPULATIONS", Heredity, 79, 1997, pp. 541-552

Abstract

Gene flow occurs in two ways for hermaphrodite plants; seed flow and pollen flow. Dispersal of biparentally inherited (nuclear) and paternally inherited (conifer chloroplast) genes can be mediated by both seedand pollen, whereas for maternally inherited (angiosperm chloroplast and most mitochondrial) genes only seed flow contributes to dispersal. This produces asymmetrical migration for biparentally, paternally andmaternally inherited genes and may lead to different levels of population differentiation among them. This paper explores the effects of contrasting patterns of gene flow for different plant genes on their population structure under isolation by distance, on Nei's genetic distance measure, on divergence in nucleotide sequence between populations and on gene phylogenies. The possibilities are discussed of using data on population structure, genetic distance, sequence divergence and gene phylogenies as a basis for estimating the ratio of pollen to seed flow among subpopulations. One important general result from the isolation-by-distance model is that population differentiation for maternallyinherited genes is greater than that for paternally inherited genes, which, in turn, is greater than that for biparentally inherited genes as long as the dispersal of seeds and pollen grains takes place. This is consistent with results obtained previously for the island and stepping-stone models in which populations are discretely distributed.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 14/08/20 alle ore 17:02:18