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- W1966133737 abstract "Androecium development and gynoecium development were compared among hermaphroditic flowers from nonfruiting (NF) and low-fruiting (LF) trees and female flowers from high-fruiting (HF) trees of gynodioecious Ocotea tenera Mez & J.D. Smith ex Mez. Dramatic qualitative differences in androecium development were identified between gender classes. Anthers in all flowers initiated microsporogenesis, with flowers from NF and LF trees eventually producing pollen, although some pollen from LF trees was slightly malformed. In anthers from HF trees, pollen development terminated after microspore tetrads developed, and the immature pollen grains eventually degenerated. Allometric relationships between flower growth and gynoecium growth differed among gender classes, with flowers from HF trees having a significantly greater slope. Allometric relationships between androecium and whole-flower growth were not different, but androecium size was reduced in female flowers. We argue that the gene, or genes, causing abortion of pollen grains in flowers of HF trees not only causes male sterility but also has a cascade of effects on stamen and corolla development. In contrast, gynoecium development appears to be uncoupled from androecial and corolla development. The uncoupling may allow natural selection to shape specific structural attributes of female flowers and functionally male flowers separately." @default.
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- W1966133737 date "1998-05-01" @default.
- W1966133737 modified "2023-09-23" @default.
- W1966133737 title "Flower Development and Male Sterility in Ocotea tenera (Lauraceae): A Gynodioecious Tropical Tree" @default.
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- W1966133737 doi "https://doi.org/10.1086/297560" @default.
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