1.They help in evolution of new varieties, species and genera.

2.They often associated with advantages features like increased size, hardness and resistance to disease.

3.Seedles varieties of watermelons, tomatoes, grapes, etc. have been produced by triploids.

4.Disease resistant and high yielding species of crops are produced by allopolyploidy.

5.Polyploidy is usually used in obtaining fodder plants.

6.Polyploid plant often faces the ecological hazards more boldly.