Cassava

**Botanical and Genetic Aspects:**
– Cassava is a woody shrub native to South America.
– Rich in starch but low in protein and nutrients.
– Cassava leaves are a good protein source but lack methionine.
– The African cassava genome has been reconstructed, revealing novel gene loci.
– Small cassava farmers play a vital role in maintaining genetic diversity.
– MeFT1 and MeFT2 genes influence storage root formation.

**Historical and Cultural Significance:**
– Cassava cultivation dates back at least 10,000 years.
– Staple food for pre-Columbian peoples in the Americas.
– Introduced to Africa and Asia in the 16th century.
– Evidence of cultivation found in ancient Maya sites.
– Cultivated in Portuguese and Spanish America.

**Geographical Distribution and Spread:**
– Wild populations centered in west-central Brazil.
– Domesticated forms found growing in the wild.
– Introduced by Portuguese and Spanish traders to colonies like Goa and Malacca.
– Grown in Eastern Indonesia, Timor, and the Philippines.
– Replaced native African crops in regions like Tanzania.

**Nutritional Value and Dietary Importance:**
– Rich in carbohydrates, vitamins, and minerals.
– Provides energy and sustenance.
– Valued as a staple food in eastern Indonesia and parts of Africa.
– Plays a crucial role in Asian and African cuisines.
– Offers a gluten-free alternative in diets.

**Economic Significance and Agricultural Practices:**
– Cultivated for bio-fuel production and starch extraction.
– Key crop in Thailand, Cambodia, and Vietnam.
– Contributes significantly to the agricultural economy of Asian countries.
– Drives commercial cultivation and provides livelihoods for farmers.
– Requires well-drained soil, thrives in tropical climates, and is susceptible to pests and diseases.