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Titolo:
MICROSATELLITE ANALYSIS OF SEED DISPERSAL AND PARENTAGE OF SAPLINGS IN BUR OAK, QUERCUS-MACROCARPA
Autore:
DOW BD; ASHLEY MV;
Indirizzi:
USDA ARS,NO GREAT PLAINS RES LAB,HIGHWAY 6 S,POB 459 MANDAN ND 58554 UNIV ILLINOIS,DEPT BIOL SCI CHICAGO IL 60607
Titolo Testata:
Molecular ecology
fascicolo: 5, volume: 5, anno: 1996,
pagine: 615 - 627
SICI:
0962-1083(1996)5:5<615:MAOSDA>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
VIROLA-SURINAMENSIS; GENETIC-STRUCTURE; POPULATIONS; FAGACEAE; SURVIVAL;
Keywords:
SEED DISPERSAL; MICROSATELLITES; QUERCUS MACROCARPA; PATERNITY; TREES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
30
Recensione:
Indirizzi per estratti:
Citazione:
B.D. Dow e M.V. Ashley, "MICROSATELLITE ANALYSIS OF SEED DISPERSAL AND PARENTAGE OF SAPLINGS IN BUR OAK, QUERCUS-MACROCARPA", Molecular ecology, 5(5), 1996, pp. 615-627

Abstract

Microsatellite analysis was used to examine parentage and spatial distributions of 62 adult bur oaks Quercus macrocarpa, and 100 saplings in a single stand. Using genotypes scored by PCR products at four microsatellite loci, we determined that 94 saplings matched at least one parent in the stand. Saplings often occur as dense clusters of half-sibsaround the presumed maternal parent, and only four adults were seed parents to a large proportion of the saplings sampled. A stump apparently was the seed parent of the largest cluster of half-sibs, which occupied a sizeable light gap opened up by the death of their maternal tree. Approximately half of the saplings appeared to have grown from seeds that had not been removed after falling from the tree, and half fromseeds that were dispersed beyond the crown of their maternal parent. Long-distance seed dispersal may be more common than has been previously reported. Extremely high levels of long-distance pollination were indicated, and pollen donors within the stand were generally distributed randomly around maternal trees. More than half of the saplings had paternal parents outside of the stand. This study demonstrates the utility of microsatellite analysis for studying mating systems, seed dispersal and seedling establishment in natural plant populations.

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Documento generato il 27/09/20 alle ore 00:52:04