Important Definations
1. Drought:
Condition of soil moisture deficiency or water scarcity.
2. Drought Avoidance:
Ability of plants to maintain a favourable internal water balance under moisture stress.
3. Drought Hardening:
Improvement in drought tolerance ability of a genotype through various seed and seedling treatments.
4. Drought Resistance:
Ability of crop plants to grow, develop and reproduce normally under moisture deficit condition or survival of plants under water deficit conditions without injury. It is a sum of drought avoidance and drought tolerance.
5. Drought Tolerance:
Ability of plants to withstand low tissue water content.
6. Hydroponics:
Growing of plants in nutrient solution.
7. Lysimeter:
Cemented micro plots of various sizes used for study of roots and salt tolerance.
8. Porometers:
An instrument that is used for measuring stomatal aperture.
9. Psychrometer:
An instrument which is used to measure tissue water potential in plants.
10. Salts Tolerance:
Ability of plants to prevent, reduce or overcome the injurious effect of soluble salts present in the root zone.
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