Flower Bud Abortion Influences Clonal Growth and Sexual Dimorphism in the Understorey Dioecious Shrub Aucuba japonica (Cornaceae)

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Flower bud abortion influences clonal growth and sexual dimorphism in the understorey dioecious shrub Aucuba japonica (Cornaceae).

Sexual differences were investigated to determine the significance of flower bud abortion in the dioecious shrub Aucuba japonica Thunb. The mean number of flowers per inflorescence and the mean number of flowering inflorescences (as opposed to aborted inflorescences) per individual were greater in males than in females in 1997 and 1998. Reproductive investment by males was 0.4-times (1997) and ...

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Most dioecious plant species are believed to derive from hermaphrodite ancestors. The regulatory pathways that have been modified during evolution of the hermaphrodite ancestors and led to the emergence of dioecious species still remain unknown. Silene latifolia is a dioecious plant species harboring XY sex chromosomes. To identify the molecular mechanisms involved in female organ suppression i...

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The life history of figs (Ficus, Moraceae) involves pollination by specialized insects and seed dispersal by vertebrate frugivores. This three-way interaction raises the possibility of conflict between pollinators and seed dispersers over fig resources. The conflict might be mediated in dioecious figs by the segregation of inflorescences with specialized male and female sexual functions, termed...

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Development of microsatellite markers for the clonal shrub Orixa japonica (Rutaceae) using 454 sequencing1

PREMISE OF THE STUDY Microsatellite markers were developed for a dioecious shrub, Orixa japonica (Rutaceae). Because O. japonica vigorously propagates by vegetative growth, microsatellite markers can be used to identify clonal relationships among its ramets. METHODS AND RESULTS Sixteen polymorphic microsatellite markers were identified by 454 next-generation sequencing. The number of alleles ...

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ژورنال

عنوان ژورنال: Annals of Botany

سال: 2002

ISSN: 0305-7364,1095-8290

DOI: 10.1093/aob/mcf111