Long-term variation in seed mass and seed production in populations of Paris quadrifolia

Plant Biology
I Kosiński

Abstract

Seed production of the perennial herb Paris quadrifolia L. (Liliaceae) was investigated in five populations in northern Poland. The long-term seed production per square metre differed significantly among populations and years. Moreover, throughout the 7-year study period, 30% of both whole ripe fruits and seeds alone were predated. Variation in seed mass per fruit in both space and time was significant. Throughout the 7-year study, nearly all the marked individuals produced fruits once every 2 years. The most frequent break between fruiting was 2 years and the longest was 5 years. Only the mean seed mass in fruits of the same individual varied significantly over subsequent years. In the five populations, the number of ovules, number of seeds in the fruit and seed mass varied significantly between populations. However seed/ovule ratio did not differ in fruits in the five populations. The seed mass/number trade-off in fruits was strongly partially correlated when the effect of total seed mass was considered. Breeding experiments suggest that P. quadrifolia has a substantial capacity for both inbreeding and outbreeding. There were no significant differences in the seed/ovule ratio, seed number or seed mass in fruits produced from ...Continue Reading

References

Feb 15, 2005·Proceedings of the National Academy of Sciences of the United States of America·K Diane JofukuJack K Okamuro
Jan 1, 1989·Trends in Ecology & Evolution·J Silvertown
Oct 1, 1994·Evolution; International Journal of Organic Evolution·Bernhard Schmid, Claudine Dolt

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Citations

Jul 28, 2018·PloS One·Amparo Lázaro, Asier R Larrinaga
Dec 1, 2013·Botanical Studies·Prado RomeraAdolfo F Muñoz-Rodríguez

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