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Or, with bisexual and at least one of male and female flowers on the same plant. [2] Protandrous: (of dichogamous plants) having male parts of flowers developed before female parts, e.g. having flowers that function first as male and then change to female or producing pollen before the stigmas of the same plant are receptive. [6]
[9] [10] Female flowers have thick pedicels, and an inferior ovary with 3–5 stigmas that each have two lobes. [8] [11] The female flowers of C. argyrosperma and C. ficifolia have larger corollas than the male flowers. [8] Female flowers of C. pepo have a small calyx, but the calyx of C. moschata male flowers is comparatively short. [8]
Pumpkins produce both a male and female flower, with fertilization usually performed by bees. [22] In America, pumpkins have historically been pollinated by the native squash bee, Peponapis pruinosa, but that bee has declined, probably partly due to pesticide (imidacloprid) sensitivity. [23]
Flowers that bear a gynoecium but no stamens are called pistillate or carpellate. Flowers lacking a gynoecium are called staminate. The gynoecium is often referred to as female because it gives rise to female (egg-producing) gametophytes; however, strictly speaking sporophytes do not have a sex, only gametophytes do. [1]
Floral sexuality is related to the presence or absence of the reproductive whorls: androecium and gynoecium. Flowers that have both whorls (i.e., will produce both male and female gametes) are said to be perfect, bisexual, monoclinous or, more frequently, hermaphrodites, as is the case with potato flowers (Solanum tuberosum, Solanaceae
Male and female flowers evolve from hermaphroditic flowers [19] via andromonoecy or gynomonoecy. [20]: 148 In amaranths monoecy may have evolved from hermaphroditism through various processes caused by male sterility genes and female fertility genes. [20]: 150 Monoecy may be an intermediate state between hermaphroditism and dioecy. [21]
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Squash blossoms are highly perishable, and as such are rarely stocked in supermarkets. [2] Male and female squash blossoms can be used interchangeably, but picking only male flowers (leaving some for pollination) [3] allows the plant to also produce some fruit (squash).
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