Question
What is biofortification? Name specific crop varieties that have been developed with enhanced levels of iron, zinc, and vitamin A. Why is biofortification preferred over simple supplementation in developing countries?
(NEET pattern — direct recall + reasoning)
Solution — Step by Step
Biofortification is the breeding of crops to increase their nutritional value — specifically the content of vitamins, minerals, or protein. This is done through conventional plant breeding, agronomic practices, or modern biotechnology. The key word here is “breeding into the crop itself” — the nutrition is built into the seed, not added later.
Here is the high-yield table NEET loves to test:
| Nutrient | Biofortified Crop | Variety/Example |
|---|---|---|
| Vitamin A | Rice | Golden Rice (beta-carotene enriched) |
| Vitamin A | Sweet potato | Orange-fleshed sweet potato |
| Iron | Wheat | Atlas 66 (high protein, iron) |
| Iron | Spinach | Bathua (iron-rich selections) |
| Zinc | Maize | QPM — Quality Protein Maize |
| Protein | Maize | QPM (also rich in lysine and tryptophan) |
| Vitamin C | Bitter gourd | Pusa Aushadhi |
| Iron + Calcium | Broad bean (Fava) | Selected IARI varieties |
Golden Rice is the most famous example — developed by inserting genes for beta-carotene biosynthesis from daffodil and Erwinia into rice endosperm.
Supplementation means giving pills or fortified food externally — it requires continuous distribution, cold chains, and healthcare infrastructure. Biofortification embeds nutrition directly into staple crops that farmers already grow and people already eat. Once the seed is bred, benefits are self-sustaining across generations of planting.
This makes it far more practical for rural areas in developing countries where healthcare access is limited.
graph TD
A[Biofortification Targets] --> B[Vitamins]
A --> C[Minerals]
A --> D[Proteins]
B --> B1["Vitamin A — Golden Rice"]
B --> B2["Vitamin C — Pusa Aushadhi"]
C --> C1["Iron — Atlas 66 Wheat"]
C --> C2["Zinc — QPM Maize"]
D --> D1["Lysine/Tryptophan — QPM"]
style A fill:#fbbf24,stroke:#000,stroke-width:2px
style B fill:#f9a8d4,stroke:#000
style C fill:#93c5fd,stroke:#000
style D fill:#86efac,stroke:#000Why This Works
Malnutrition is not always about quantity of food — it is about quality. Millions eat enough calories from rice and wheat but lack essential micronutrients (hidden hunger). By engineering the staple crop itself to carry these nutrients, we bypass the need for separate supplementation programs.
The breeding approach is cost-effective at scale. Once a biofortified variety is released, farmers multiply the seed themselves. Compare that with distributing vitamin A capsules to millions of children every six months — the logistics are night and day.
Common Mistake
Students confuse biofortification with fortification. Fortification is adding nutrients to processed food (like adding iodine to salt or iron to flour). Biofortification is breeding the plant itself to produce more of the nutrient. NEET questions specifically test this distinction — read the question carefully before answering.
For NEET, memorise: Golden Rice = Vitamin A, Atlas 66 = Iron-rich wheat, QPM = Protein-rich maize. These three examples cover 80% of the questions asked on this topic.