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Pollination in detail
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This lesson aims to provide an insight into the process of Self Pollination along with it's types . Furthermore it puts light on the advantages and disadvantages of the same.

Shreyaa Sharma is teaching live on Unacademy Plus

Shreyaa Sharma
Bot & Zoo grad. Qualified IIT JAM. Masters in Envtl. Sc. - Sustainable Devpt. and Disaster Management . A curious learner :-) .

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  1. POLLINATION LESSON 2 PRESENTED BY - SHREYAA SHARMA


  2. TYPES OF POLLINATION SELF POLLINATION CROSS POLLINATION POLLINATION


  3. SELF POLLINATION Pollination. -Anther Filament It is the transference of the pollen grains from the anther of a flower to the stigma of either the same or genetically similar flower -Style Ovule Petal Sepal


  4. TYPES OF SELF POLLINATION SELF POLLINATION GEITONOGAMY AUTOGAMY


  5. TYPES OF SELF POLLINATION Autogamy Geitonogamy It is a type of Cres It is a type of pollination, in which the pollen grains one flower are transferred to the stigma of another flower oainlien self pollination in which a perfect flower is pollinated Self Pollination Autogamy) of one flower are Glelbrpbelonging to either the Sel Pollination Geitonogamy) by its own pollen same or genetically similar plant.


  6. AUTOGAMY Gk. Autos-self, gamos - marriage Can Take place by three methods : 1. HOMOGAMY-as observed in case of chasmogamous (open) flowers . Example Catharanthus, Mirabilis, etc. 2. CLEISTOGAMY - as observed in case of closed flowers. Example Ocalis, iola, etc. In this case pollination and seed set are assured even in the absence of ollinators 3. BUD POLLINATION - Here, the anthers and stigmas attain maturity, before the opening of the buds, so self pollination takes place. Example Pea, Wheat, Rice


  7. GEITONOGAMY Gk. Geiton - neighbour, Gamos marriage It is a type of pollination, in which the pollen grains of one flower are Cos Foaion transferred to the stigma of another flower, belonging to either the same or genetically, similar plant. Self Pollination (Autogamy) Self Pollination


  8. ADVANTAGES OF SELF POLLINATION It maintains the parental characters or the purity of race Self pollination is used to maintain pure lines for hybridisation experiments. VThe plant doesn't need to produce a large number of pollen grains. Flowers do not need to develop devices for attracting insect pollinators. Ensures seed production VHelps to eliminate bad recessive characters


  9. DISADVANTAGES OF SELF POLLINATION New useful characters are seldom introduced Vigour and vitality of the race decreases with prolonged self pollination VImmunity to disease decreases Variability and Adaptability to changed environment is reduced