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Developmental failure and loss of reproductive capacity as a factor in extinction: A nine-year study of Dedeckera eurekensis (Polygonaceae)

, : Developmental failure and loss of reproductive capacity as a factor in extinction: A nine-year study of Dedeckera eurekensis (Polygonaceae). Aliso 21(2): 55-63

Many long-lived perennial species exhibit lowered reproductive capacity. Early studies of reproductive success in Dedeckera eurekensis (Polygonaceae) demonstrated that the species exhibited extremely low reproductive success, low seed/ovule (S/O) ratios (i.e., the percentage of ovules that produce filled seeds; 2.5%), low germinability of filled seeds (3.5%), low seedling survivorship (11.1%), and lack of recruitment in natural populations.


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