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Essay on Somaclonal Variation in Plants

Causes:

1. Change in chromosome number/ structure.

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2. Gene mutation.

3. Plasmagene mutation.

4. Attention in gene expression.

5. Gene amplification.

6. Mitotic and erasing over.

7. Rearrangements in Cytoplsamic genes.

Applications:

1. Resistant to disease variants can be isolated.

2. Stress Resistance.

3. Low-temperature mutant.

4. Mutants for Agronomic traits.

5. Mutants for Efficient Nutrient Utilization. Achivements

1. ‘Scarlet’ variety in sweet potato.

2. Sigma – Alfalfa.

Advantages:

1. High frequency mutagensis.

2. Variation is created.

3. Novelity.

4. Less time for variety release.

Limitations:

1. Selected cell lines fail to regenerate.

2. Many of the selected clones are unstable.

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