Emasculation_in_Plant_Breeding and remaining of anther

🌿 Slide 1: Emasculation in Plant Breeding

Description:
This slide introduces the topic. Emasculation is the removal of anthers before pollen shedding to prevent self-pollination, an important step in hybridization for controlled crossing between selected plants.


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🌸 Slide 2: Introduction

Description:
Emasculation helps breeders ensure that only the desired pollen fertilizes the flower. It maintains purity in crosses and is essential in the creation of hybrid varieties.


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🎯 Slide 3: Objectives of Emasculation

Description:
The main aim is to obtain new hybrid combinations by preventing self-fertilization. It ensures cross-pollination, promotes desired traits, and prevents contamination from unwanted pollen.


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🧬 Slide 4: Methods of Emasculation

Description:
Different methods are used depending on the crop and flower type:

Hand emasculation with forceps is most common.

Hot water or alcohol methods kill pollen grains.

Genetic or chemical emasculation uses male-sterile lines or chemicals to prevent pollen formation.

1. Emasculation in Plant Breeding Removal of anthers to prevent self-pollination Prepared by: Aman Kourav

2. Introduction • Emasculation means removal of anthers before pollen is shed. • Prevents self-pollination and ensures cross-pollination. • Commonly used in hybridization programs.

3. Objectives of Emasculation • To obtain desired hybrid combinations. • To prevent contamination from self-pollen. • To promote controlled pollination between selected parents.

4. Methods of Emasculation • Hand Emasculation – using forceps/tweezers to remove anthers. • Hot Water Method – dipping buds in warm water (e.g., 45°C for 10 min). • Alcohol Method – brief alcohol treatment to kill pollen. • Genetic & Chemical Methods – using male sterility or chemicals.

5. Steps in Hand Emasculation 1. Select a mature but unopened flower. 2. Carefully remove anthers with forceps. 3. Cover the flower with a paper or butter bag. 4. Tag and label the emasculated flower.

6. Importance in Plant Breeding • Essential for hybrid seed production. • Ensures genetic purity and desired trait combination. • Widely used in crops like rice, wheat, cotton, and tomato.