Question

Identify the correct sequence of the steps involved in artificial hybridisation.
[1 mark]

• A. Emasculation 🡪 pollination 🡪 bagging 🡪 rebagging
• B. Pollination 🡪 emasculation 🡪 bagging 🡪 rebagging
• C. Bagging 🡪 rebagging 🡪 emasculation 🡪 pollination
• D. Emasculation 🡪 bagging 🡪 pollination 🡪 rebagging

Answer 1

The correct option is D Emasculation 🡪 bagging 🡪 pollination 🡪 rebagging

Artificial hybridisation is a method in which desired pollen grains are used for pollination and fertilisation. It involves the following steps after selecting the plants for hybridisation :

• Emasculation - Removal of the anther from the bisexual flower.
• Bagging - The emasculated flower is bagged. It is covered to prevent the contamination of the stigma with unwanted pollen grains.
• Pollination - When the stigma attains maturity the pollination is carried out with the selected pollen. Pollen grains are dusted on the stigma in this step.
• Rebagging - The flower is then rebagged to avoid any interference or contamination from undesired pollens.

Hence option d is correct.

Figure : Figure : Artificial hybridization - (a) Selection of parent, (b) Emasculation, (c) Collection of desired pollen grains, (d) Pollination, (e) Tagging and (f) Rebagging