**1.4 Limited genetic diversity**

The genetic enhancement of crops largely depends on the genetic diversity available in that crop for exploitation. The variability present in legumes for selection is comparatively limited. However, India is rich in available genetic diversity for legume crops, but the production and productivity are poor compared to global production and productivity [7]. To develop new cultivars, breeders use the same germplasm repeatedly in breeding programmes, and the rate of incorporation of new germplasm is less. Extensive use of the same genotypes with common ancestry in breeding programmes is the prime reason for the narrow genetic base of developed cultivars. Thus, the developed varieties are more susceptible to insects, pests, diseases and unpredictable climatic factors.
