In this article we will discuss about:- 1. Meaning of Photoperiod 2. Photoperiodic Response Groups 3. Photoinductive Cycles 4. Genetic Approach 5. Flowering Hormone. Subject-Matter of Photoperiod: Two American plant physiologists, W.W. Garner and H.A. Allard (1920) while working at the USA department of Agriculture Research Laboratories at Beltsville, Maryland made observations that tobacco variety, […]
Photoperiod: Subject-Matter, Response and Approach | Flowering
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Incompatibility in Plants
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In this article we will discuss about:- 1. Recognition and Rejection of Incompatibility 2. Biological Significance of Incompatibility. Recognition and Rejection of Incompatibility: The rejection of ‘self’ in self-incompatibility system implies the existence of a recognition event. In fact pollen-stigma interaction is an interesting example of cell recognition in flowering plants. Both self-and cross-pollinations are […]
Physiology of Seed Germination
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In this article we will discuss about:- 1. Subject-Matter of Seed Germination 2. Factors Influencing in Seed Germination 3. Mobilization of Reserves during Seed Germination 4. How to Test Seed Viability?. Subject-Matter of Seed Germination: Seeds develop and mature within the fruits. Once the fruit attains maturity and ripens it is shed and the seeds […]
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