Breeding for Abiotic Stress

1. GENETICS & PLANT BREEDING ASSIGNMENT

2. Salt tolerance: ability of plants to prevent, reduce or overcome
injurious effects of soluble salts present in their root zone.
Salinity can be overcome by
1)Soil reclamation: costly, time consuming and short lived
2)Resistant varieties : less costly, more effective, long lasting
Characteristics of plants to salt:
-Land races more tolerant than high yielding varieties
--salt tolerance capacity differs from species to species
--different plant show differential response to salinity

3. Classification of plants based on
salt tolerance

4. Symptoms of plant to salt
stress

5. Mechanism of salt tolerance

7. Breeding strategies
Screening techniques

8. Achivements

9. COLD TOLERANCE

10. Chilling tolerance mechanism
involve

11. Sources of chilling tolerance

12. Effects of chilling on plants

13. Freezing resistance

14. Effects of freezing stress

16. Mechanism of freezing resistance

18. Genetic resources for freezing
tolerance

19. Selection criteria
Problems in breeding for freezing tolerance

20. THANK YOU