Norungan, anindica landrace from Tamil Nadu, India, is known for its adaptation to drought through its deep and thick roots with superior root penetrating ability.
Check these Following Papers:
1. Variation in root penetration ability, osmotic adjustment and dehydration tolerance among accessions of rice adapted to rainfed lowland and upland ecosystems.
2. Mapping QTLs for Plant Phenology and Production Traits Using Indica Rice (Oryza sativaL.) Lines Adapted to Rainfed Environment