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  • ICAR and TNAU E-Course Summarized

    Summarized Notes
  • When dormancy occurs due to conditions within the dormant organ itself, it is known as: (IGKV CET Horti 2021)

    Question: When dormancy occurs due to conditions within the dormant organ itself, it is known as: (IGKV CET Horti 2021)

    Options:

    Innate dormancy
    Imposed dormancy
    Induced dormancy
    Pre-dormancy

    ✅Explanation:Innate dormancy, also known as endogenous dormancy or primary dormancy, is a state of developmental arrest in seeds or buds due to internal factors. These factors can include:
    -Presence of growth inhibitors: Certain hormones or chemicals prevent germination or bud break.
    -Immature embryo: An underdeveloped embryo may require a dormancy period to mature.
    -Imperfect seed coat: Properties of the seed coat may hinder water uptake or gas exchange.

    📌 Other Options Explained:
    -(B) Imposed dormancy (Exogenous dormancy): Caused by external environmental factors preventing germination despite favorable internal conditions (e.g., lack of water, temperature extremes).
    -(C) Induced dormancy: Triggered by environmental cues experienced after seed or bud development (e.g., exposure to cold temperatures).

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