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Titolo:
VARIATION OF REPRODUCTIVE SUCCESS IN A HAPLO-DIPLOID RED ALGA, GRACILARIA-VERRUCOSA - EFFECTS OF PARENTAL IDENTITIES AND CROSSING DISTANCE
Autore:
RICHERD S; DESTOMBE C; CUGUEN J; VALERO M;
Indirizzi:
UNIV LILLE 1,GENET & EVOLUT POPULAT VEGETALES LAB,CNRS,URA 1185,GDR 1002 F-59655 VILLENEUVE DASCQ FRANCE UNIV LILLE 1,INST AGRICOLE & ALIMENTAIRE LILLE F-59655 VILLENEUVE DASCQ FRANCE
Titolo Testata:
American journal of botany
fascicolo: 12, volume: 80, anno: 1993,
pagine: 1379 - 1391
SICI:
0002-9122(1993)80:12<1379:VORSIA>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
CHAMAECRISTA-FASCICULATA LEGUMINOSAE; POLLEN-TUBE GROWTH; WILD RADISH; DELPHINIUM-NELSONII; FITNESS COMPONENTS; PHLOX-DRUMMONDII; MATE CHOICE; SEED SET; EVOLUTIONARY CONSEQUENCES; INBREEDING DEPRESSION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
78
Recensione:
Indirizzi per estratti:
Citazione:
S. Richerd et al., "VARIATION OF REPRODUCTIVE SUCCESS IN A HAPLO-DIPLOID RED ALGA, GRACILARIA-VERRUCOSA - EFFECTS OF PARENTAL IDENTITIES AND CROSSING DISTANCE", American journal of botany, 80(12), 1993, pp. 1379-1391

Abstract

The factors influencing reproductive success in a haplo-diploid marine alga, Gracilaria verrucosa, have been determined through single-malecrosses in the laboratory. Crossing success was assessed by measuringits early components, fertility, and abortion rate. The effects of the male or female parent identity, of the male x female interaction, and of the geographical distance between mates were tested in crosses within or between populations at different geographical scales. The identity of the female parent has a predominant effect on crossing success. Interparent distance has no effect in within-population crosses, this strongly suggests an absence of inbreeding depression, expected in aspecies where the haploid phase is individualized and isomorphic to the diploid one. Crossing success tends to increase with distance between mates in between-population crosses. This heterosis effect seems toindicate that the marine environment could allow genetic divergence between populations, even at short distances (about 100 m).

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 10/07/20 alle ore 15:20:03