Autogamy and geitonogamy difference | Autogamy | Geitonogamy

Autogamy and geitonogamy difference | Autogamy | Geitonogamy, hi guys in this article we know about autogamy vs geitonogamy and its definition and examples. Both is types of self pollination in flowering plant.

Autogamy and geitonogamy difference | Autogamy | Geitonogamy

Autogamy and geitonogamy difference | Autogamy | Geitonogamy

As we know in flowering plant reproduction there is Union of haploid ovule with haploid pollen grain to form diploid zygote. How the the Pollen Grain reach to embryo sac for reproduction in flowering plant. Pollen Grain reach to embryo sac by itself or need pollinating agent by various means of animals, insects, Birds, water, bats and wind.

Autogamy is define as transfer of pollen grain by itself from Anther to stigma within same flower of same plant and geitonongamy is define as transfer of pollen grain from anther to stigma of ecological different flowers of same plant by help of pollinating agents.

Major difference between autogamy and geitonogamy is, autogamy transfer of pollen grain by itself from Anther to stigma within same flower of same plant and geitonongamy is transfer of pollen grain from anther to stigma of ecological different flowers of same plant by help of pollinating agents.

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Autogamy is type of self pollination which are made of Union of two Greek words, Auto + gamy, Auto means “self” and gamy means “marriage” or “union“. It means autogamy is “self marriage” or “self union” in which female gamete ovule and male gamete pollen grain are united and fused to form zygote that comes from same flower.

Autogamy is a type of self pollination wherein pollen grains from anther of flower are transferred to the stigma of same flower.

Geitonogamy is also a type of self pollination, it is combination of two Greek word geitono + gamy, “geitono” means “neighbour” and “gamy” means “marriage” or union. In another word geitonogamy means marriage with neighbouring flower or pollination takes place between neighbouring flower.

Geitonogamy refers to pollination of pollen from anther of one flower to stigma of other flower, borne on the same plant, it is a type of self pollination between genetically similar but physically different flowers. Geitonogamy is type of cross pollination wherein pollens from one plant are transferred to stigma of flower borne on different plant of same species.

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Autogamy and geitonogamy difference

Major difference between autogamy and geitonogamy is, autogamy transfer of pollen grain by itself from Anther to stigma within same flower of same plant and geitonongamy is transfer of pollen grain from anther to stigma of ecological different flowers of same plant by help of pollinating agents.

Now understanding the autogamy and geitonogamy difference in following points:

Autogamy:-

1) Autogamy is type of self pollination which are made of Union of two Greek words, Auto + gamy, Auto means “self” and gamy means “marriage” or “union”. It means autogamy is “self marriage” or “self union”.

2) Autogamy is a type of self pollination wherein pollen grains from anther of flower are transferred to the stigma of same flower.

3) its do not need pollinating agent for pollination

4) its flower is may be brightly coloured or colourless

5) open flower is chasmogamy and closed flower is cleistogamy.

6) in this type of pollination it has low biological fitness because pollination takes place within same flower.

7) genetical, physical, ecological and according to function it is self pollination.

Geitonogamy pollination in corn flower

Geitonogamy pollination in corn flower

◆ Geitonogamy:-

1) Geitonogamy is also a type of self pollination, it is combination of two Greek word geitono + gamy, “geitono” means “neighbour” and “gamy” means “marriage” or union. In another word geitonogamy means marriage with neighbouring flower or pollination takes place between neighbouring flower.

2) Geitonogamy refers to pollination of pollen from anther of one flower to stigma of other flower, borne on the same plant.

3) its need pollinating agent for pollination

4) its flower is mostly brightly coloured to attract pollinating agent

5) geitonogamy have no types.

6) in this type of pollination it has more biological fitness than autogamy because pollination takes place between different flower.

7) genetical it is self pollination because pollination takes place between different flowers which are born on same plant but physical, ecological and according to function it is cross pollination because they need pollinating agent for transfer of pollen grain anther to stigma different flowers.

About the author

Balram Saw

My name is Balram Saw and by profession, I am a lecturer. I did my masters in M.sc Zoology. On this blog, I share all the information related to biology.

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