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DROUGHT STRESS AND INBREEDING DEPRESSION IN LYCHNIS FLOS‐CUCULI (CARYOPHYLLACEAE)
Author(s) -
Hauser Thure P.,
Loeschcke Volker
Publication year - 1996
Publication title -
evolution
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.84
H-Index - 199
eISSN - 1558-5646
pISSN - 0014-3820
DOI - 10.1111/j.1558-5646.1996.tb02352.x
Subject(s) - inbreeding depression , biology , outbreeding depression , inbreeding , botany , horticulture , demography , population , sociology
Interactions between drought stress and inbreeding depression were studied in Lychnis flos‐cuculi. Four inbreeding levels (F = 0, 0.25, 0.50 and 0.75), and three watering treatments were used. Performance was scored for germination rate and proportion, survival, plant size, proportion of plants flowering, flowering date, stem height, number of flowers, flower size, anther weight, fruiting proportion and number of capsules. Multiplicative fitness values were estimated from these traits. Inbreeding affected most of the traits studied, and a severe inbreeding depression was found for the combined fitness estimates. The higher inbreeding depression found here relative to the same family groups in a former experiment may reflect greater dominance and suppression in the present experiment at higher density.