Abstract
Abstract A wide variety of reproductive strategies are employed by flowering plants. Most of them have hermaphrodite flowers but some species have unisexual flowers. In monoecious species single plants bear both staminate and pistillate flowers, while in dioecious species single plants bear only one type of flower. The genetic control of hermaphrodite flower development has been extensively studied and many of the genes involved in this phenomenon have been isolated and characterized. Some of these genes are also involved in the differentiation of unisexual flowers: during their development, however, a particular type of control occurs, which is involved in sex differentiation. A better knowledge of this particular phenomenon and the isolation of the genes involved, would open the possibility of manipulating the sex of plants. Monoecious and dioecious plants could become the source of sex modifying genes for transforming hermaphrodite plants into male sterile ones, to avoid self-pollination and produce hy...
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