Dioecious and Monoecious plant explanation (Males / Females / Hermies)

JM

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Cres was nice enough to share this with me... thought others might also appreciate it! :toke:

Terminology:

  • Hermaphrodite. In hermaphroditic species, each reproductive unit (as in flower, conifer cone or functional equivalent) of each individual has both male and female structures. In angiosperm terminology a synonym is monoclinous from the Greek "one bed".
  • Monoecious. In monoecious species, each individual has reproductive units that are merely female and reproductive units that are merely male. The name derives from Greek "monos" (one) and "ecos" (home), a rather unfortunate term. Individuals bearing separate flowers of both sexes at the same time are called simultaneously or synchronously monoecious. Individuals that bear flowers of one sex at one time are called consecutively monoecious; plants may first have single sexed flowers and then later have flowers of the other sex. Protoandrous or protandrous describes individuals that function first as males and then change to females; protogynous describes individuals that function first as females and then change to males.
  • Dioecious. In dioecious species, each individual has reproductive units that are either merely male or merely female. That is, no individual plant of the population produces both microgametophytes (pollen) and megagametophytes (ovules).[5] From Greek for "two households". [Individual plants are not called dioecious; they are either gynoecious (female plants) or androecious (male plants).]
    • Androecious, plants producing male flowers only, produce pollen but no seeds, the male plants of a dioecious population.
    • Gynoecious, plants producing female flowers only, produces seeds but no pollen, the female of a dioecious population. In some plant populations, all individuals are gynoecious with non sexual reproduction used to produce the next generation.
  • Subdioecious, a tendency in some dioecious populations to produce individuals that are not clearly male or female. The population produces normally male or female plants but some may be monoecious, hermaphroditic, or monoecious/hermaphroditic, with plants having perfect flowers, both male and female imperfect flowers, or some combination thereof, such as female and perfect flowers. Flowers may be in some state between purely male and female, with female flowers retaining non-functional male organs or vice versa. The condition is thought to represent a transition between hermaphroditism and dioecy.[6][7]
    • Gynomonoecious has both hermaphrodite and female units.
    • Andromonoecious has both hermaphrodite and male units.
    • Subandroecious has mostly male flowers, with a few female or hermaphrodite flowers.
    • Subgynoecious has mostly female flowers, with a few male or hermaphrodite flowers.
  • Polygamy, plants with male, female, and perfect (hermaphrodite) flowers on the same plant, called trimonoecious or polygamomonoecious plants, (see next section for use for plant populations).[8] A polygamous inflorescence has both unisexual and bisexual flowers.[9]
    • Trimonoecious (polygamous) - male, female, and hermaphrodite floral morphs all appear on the same plant.
  • Diclinous ("two beds"), an angiosperm term, includes all species with unisexual flowers, although particularly those with only unisexual flowers, i.e. the monoecious and dioecious species.
 
Great info! Thanks for sharing Cres and thanks for posting baby cakes :dance:
 
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