Individual Reproductive Unit

Submitted by: Luke Dunphy

Dellaporta and Calderon-Urrea (1993) made a list and definition of various terms used to name the ways of sex in flowering plants. This list is reproduced here (taken from Molner, 2004), generalized so as to accommodate not only the plants that have flowers , and expanded to include other terms and clearer definitions.

In summary, the organs are considered core givers and receivers male, female. Hermaphroditism in both sexes are manifested together in the same structure in the flower, stamens and carpels, for example. There monoecy when the species has separate male and female organs, the unisexual species is monoecious or dioecious. If the sex of individuals is only male or female, there is dioecious and the unisexual lineage dioica. The species include male individuals, female and hermaphrodite or organs together with the three sexual types on the same individual are called polygamous.

?Hermaphrodite – Reproductive structure that has both male and female equivalent parts (stamens and pistil in angiosperms, also known as a flowerperfect or complete ), another term used is bisexual

?Unisexual – Reproductive structure that is either functionally male or female. In angiosperms this condition is called imperfect or incomplete .

Individual Plant

?Hermaphrodite – A plant that has only hermaphrodite reproductive units (flowers, conifer cones, or equivalent functional structures).

?Monoecious – reproductive units possessing monosex (flowers, conifer cones, or equivalent functional structures) of both sexes on the same plant, from the Greek “a house”. Individuals that produce flowers of both sexes at once are called monoecious simultaneous or synchronous. Individuals who have only single-sex flowers at a time are called monoecious consecutive “proto ndricos” are the guys who run first as males and then change to female, “protogynous” are the guys who run first as females and then change to male .

?Dioica – has reproductive units monosex (flowers, conifer cones, or equivalent functional structures) that manifest in different individuals, from the Greek “two houses”.

?Because many conifers dioecious have a tendency to be monoecious (ie, a female plant, can sometimes produce a small amount of male cones or vice versa), these species are called subdioicas (McCormick & Andresen, 1963).

?In angiosperm terminology, diclinous (“twin”) includes all species with flowers monosex, particularly those that have only monosex flowers, such as monoecious and dioecious species.

?Ginoicas – only has female reproductive structures, the ground “feminine.”

?Androic – has only male reproductive structures, the ground “masculine.”

?Ginomonoicas – is hermaphrodite and female structures.

?Andromonoecious – is hermaphrodite and male structures.

?Subandroicas – plant has mostly male flowers, with a few female or hermaphrodite flowers.

?Subginoicas – plant has mostly female flowers, with a few male or hermaphrodite flowers.

?Polygamous – structures male, female, and hermaphrodite manifest all on the same floor.

Population of plants

?Hermaphrodite – only hermaphrodite plants.

?Monoecious – only monoecious plants.

?Dioecious – only dioecious plants.

?Ginodioicas – are female and hermaphrodite plants present.

?Androdioicas – are present male and hermaphrodite plants.

?Subdioicas – monosex population mainly of plants (dioecious), with a few monoecious individuals.

?Polygamous – plants are male, female, and hermaphrodite in the same population.

Some plants use a method called self-incompatibility to ensure genetic diversity within the species. In these plants, the male organs can not fertilize the female parts of the same plant.

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