Seeds – Part 3 1. Dormancy b.) Primary: dormancy that is initiated during seed development i. Exogenous 1) Physical – e.g., seed coat, fruit parts Scarification may be needed 2) Chemical – chemicals produced by seed or fruit Leaching may be needed ii. Endogenous A) non-deep, intermediate, deep 2) Physiological – including: 1) Morphological – embryo is not fully developed B) e.g., photodormancy, after-ripening, stratification
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Seeds – Part 3 1. Dormancy b.) Primary: dormancy that is initiated during seed development i. Exogenous 1) Physical – e.g., seed coat, fruit parts Scarification.
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Seeds – Part 3
1. Dormancy
b.) Primary: dormancy that is initiated during seed development
i. Exogenous 1) Physical – e.g., seed coat, fruit parts Scarification may be needed
2) Chemical – chemicals produced by seed or fruit Leaching may be needed
ii. Endogenous
A) non-deep, intermediate, deep 2) Physiological – including: 1) Morphological – embryo is not fully developed
B) e.g., photodormancy, after-ripening, stratification