Which of the following is not an objective of Biofortification in crops ?

Biofortification is the process of breeding crops to increase their nutritional value. This can be achieved through conventional selective breeding or through genetic engineering. The primary objectives of biofortification are to improve public health by enhancing the nutritional quality of food crops.

The specific objectives of biofortification include improving:
1. Protein content and quality
2. Oil content and quality
3. Vitamin content
4. Micronutrient and mineral content

While improving resistance to diseases is a major objective of plant breeding in general (often referred to as disease resistance breeding), it is not a direct objective of biofortification, which focuses specifically on nutritional enrichment.

Therefore, the correct option that is not an objective of biofortification is Improve resistance to diseases.