Controlled Pollination - Emasculation, Tagging and Bagging

Aim

To control pollination through emasculation, tagging and bagging.

Materials Required

  • Plants with large bisexual flowers
  • Tweezers
  • Scissors
  • Brush
  • Alcohol 
  • Rubber bands
  • Paper bags
  • Paper clips
  • Tags
  • Magnifying Glass

Theory

Emasculation is the process of artificial hybridization in which the stamens from the female flowers are removed from bisexual flowers in order to prevent self-fertilization. This process is carried out long before the anthers mature. Removal of anther from the bisexual flowers before the anthers mature is known as emasculation. The emasculated flower is then bagged to prevent any unwanted pollination.

This process helps in the production of flowers with desired characteristics. For this, it is essential to have the knowledge of the flower structure, fertilization, physiology of flowers and fertilization.

Procedure

  1. Select a bud of the flower and open it to remove the stamens. This is known as emasculation. Mark it as the female parent plant.
  2. The plant is then covered with a plastic bag to prevent it from pollination from any undesired pollen.
  3. Bring it in contact with the anther of the male plant with desired characteristics. The pollen should be dusted on the surface of the stigma.
  4. Cover the pollinated flower immediately with a polythene bag and label it with the name of the seed parent. 

Also Read: Artifical Hybridization

Artificial Pollination

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