DOSSIER: NCERT LINE BY LINE, pre-class

NCERT-Emasculated flowers have to be covered with a bag of suitable size, generally made up of butter paper, to prevent contamination of its stigma with unwanted pollen

Emasculated Flowers and Butter Paper

Emasculated Flowers and Butter Paper

Using butter paper to cover emasculated flowers serves a specific purpose in plant breeding and hybridization processes. Butter paper, also known as wax paper, is a semi-transparent paper that has been coated with a thin layer of wax. Here’s why it’s commonly used:

  1. Non-stick surface: Butter paper has a smooth, non-stick surface due to its wax coating. This property helps prevent the adhesion of pollen grains to the surface of the bag, reducing the risk of contamination.
  2. Breathable material: Butter paper allows air to pass through while still providing a barrier against pollen. This breathability is essential for maintaining the health of the flower and preventing mold or bacterial growth inside the bag.
  3. Transparency: The semi-transparency of butter paper allows sufficient light to penetrate, supporting the process of photosynthesis in the covered flower.
  4. Ease of manipulation: Butter paper is relatively easy to manipulate and shape around the emasculated flower, ensuring a snug fit without damaging delicate floral structures.
  5. Availability and affordability: Butter paper is readily available in most markets and is relatively inexpensive compared to other materials with similar properties, making it a practical choice for covering emasculated flowers in large-scale breeding programs.

Overall, butter paper provides an ideal combination of properties necessary for covering emasculated flowers during controlled pollination, facilitating successful hybridization and preventing unwanted contamination.

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