Effects of Population Density on Sex Expression in Onoclea sensibilis L. on Agar and Ashed Soil

Autor:	D. S. Robson, Dominick J. Paolillo, G. Rubin
Rok vydání:	1985
Předmět:	Gametophyte food.ingredient biology Ecology Plant Science biology.organism_classification complex mixtures Population density Thallus Covariate analysis Animal science food Onoclea Onoclea sensibilis Agar Growth rate
Zdroj:	Annals of Botany. 55:205-215
ISSN:	1095-8290 0305-7364
DOI:	10.1093/oxfordjournals.aob.a086893
Popis:	Population density affected the sex expression of agar-grown gametophytes of Onoclea sensibilis L. The time of onset of sexuality was advanced, the proportion of females was increased, and the growth rate of individuals was greater at lower densities. Population density had no effect on the sex expression of Onoclea grown on ashed soil, and there was no difference in growth rate of individuals grown on ashed soil at different densities. Covariate analysis, using thallus width as a measure of growth rate, indicated that the effect of density on sex expression was mostly associated with growth rate. The differing effects of population density on agar and ashed soil demonstrate that substrate influences sex expression in Onoclea. This influence is most dramatic in single-gametophyte cultures, where agar cultures produced 97 per cent females and ashed soil cultures 100 per cent males.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e0a8480124034157cc43a7c310b6fa6d https://doi.org/10.1093/oxfordjournals.aob.a086893 Zobrazit plný text záznamu