Tag Archives | Pollen Grains

Self Incompatibility in Plants | Palynology

In this article we will discuss about:- 1. Meaning of Self-Incompatibility 2. Molecular Basis 3. Determinants 4. Significance. Meaning of Self-Incompatibility: Self-incompatibility or intraspecific incompatibility is a well-designed genetic mechanism by which certain plants recognize and reject their own pollen thus forcing outbreeding. It is defined as "inability of the plant producing functional gametes to set seed upon self-pollination",. Lundqvist [...]

By |2016-11-28T11:16:50+00:00November 28, 2016|Palynology|Comments Off on Self Incompatibility in Plants | Palynology
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13 Methods to Overcome Self-Incompatibility in Plants

The following points highlight thirteen methods to overcome self-incompatibility in plants. The methods are: 1. Bud Pollination 2. Mixed Pollination 3. Deferred Pollination 4. Test Tube Pollination 5. Stub Pollination 6. Intra-Ovarian Pollination 7. In Vitro Pollination 8. Use of Mentor Pollen 9. Elevated Temperature Trea­tment 10. Irradiation 11. Surgical Method 12. Application of Chemicals 13. Protoplast Fusion. Method # [...]

By |2016-11-28T11:16:50+00:00November 28, 2016|Palynology|Comments Off on 13 Methods to Overcome Self-Incompatibility in Plants
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Groups of Self-Incompatibility | Palynology

Self-incompatibility system can be divided into two basic groups: 1. Heteromorphic Systems 2. Homomorphic Systems. Group # 1. Heteromorphic Incompatibility: This incompatibility refers to those plants where the same species produces more than one morphological types of flower, where the relative length of the style (distyly and tristyly) and stamens differ. In distyly the plants produce two forms of flowers, [...]

By |2016-11-28T11:16:50+00:00November 28, 2016|Palynology|Comments Off on Groups of Self-Incompatibility | Palynology
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