Archive | Somaclonal Variations

Mechanisms for Origin of Somaclonal Variation | Biotechnology

Several possible mechanisms are responsible for the origin of somaclonal variation. Number of processes can operate simultaneously in one culture. The mechanisms are: 1. Karyotypic Change 2. Chromosomal Rearrangement 3. Nucleotide Pool Imbalance 4. Cryptic Transposable Elements 5. Gene Amplification 6. Somatic Gene Rearrangement 7. Somatic Crossing Over. Mechanism # 1. Karyotypic Change: Several plants alter their chromosome number in [...]

By |2016-12-23T06:34:56+00:00December 23, 2016|Somaclonal Variations|Comments Off on Mechanisms for Origin of Somaclonal Variation | Biotechnology
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Somaclonal Variation: Isolation and Selection Techniques (With Diagram)

In this article, we will discuss about the isolation and selection techniques of somaclonal variation. Isolation and selection of somaclonal varia­tion is an important task. Since several changes are involved in producing somaclonal variation in different plant species, it is very difficult to sort out the somaclonal variants using a single selec­tion system. A number of selection systems are now [...]

By |2015-10-26T17:47:05+00:00October 24, 2015|Somaclonal Variations|Comments Off on Somaclonal Variation: Isolation and Selection Techniques (With Diagram)
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The Possible Mechanisms Causing Somaclonal Variation

In this article, we will discuss about the possible mechanisms causing somaclonal variations. What is Somaclonal Variation? Plants derived from tissue culture has been variously referred to as somaclones or calliclones or protoclones and the variations displayed by such plants are simply called 'somaclonal varia­tion'. According to Larkin and Scowcroft (1986), 'somaclonal variation is the genetic variability which is regenerated [...]

By |2015-10-26T17:47:12+00:00October 24, 2015|Somaclonal Variations|Comments Off on The Possible Mechanisms Causing Somaclonal Variation
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