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Self Pollination in Parisian Pansies  |

Self Pollination in Parisian Pansies 

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∙ As per a recent study, Pansy Plants (Viola arvensis) growing near Paris have evolved themselves to produce less  nectar,  showing  signs  of self-pollination instead of depending on Pollinators.

What is Pollination?

∙ Pollination is the act of transferring pollen grains from the male anther (reproductive organ) of a flower to the female stigma (reproductive organ).

Plants can be:

∙ Self-pollinating – the plant can fertilize itself; or,

∙ Cross-pollinating – the plant needs a vector (a pollinator or the wind) to get the pollen to another flower of the same species.

∙ Pollinators: Organisms that facilitate the transfer of pollen from the anthers to the stigmas of flowers, leading to fertilization and the production of seeds.

∙ Example: Bees, butterflies, beetles, moths, wasps.

Major Concerns of Self Pollination

∙ Reduction in the Genetic Diversity among the plant species, make more susceptible to diseases and pests.

∙ Self-pollination reduces the adaptability by limiting the introduction of new genetic traits in the ecosystem.

∙ Self-pollination may lead to the expression of deleterious mutations or harmful recessive traits.

∙ Like in pansy species, pollinators may enter a loop where plants producing less nectar enable less food availability, driving them towards declines.

Why Pollinators are declining?

∙ Urbanization, agricultural expansion, and changes in land use destroyed their populations.

∙ The widespread use of chemical pesticides, herbicides & GMOs have impacted a lot.

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