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DRR Dhan 45 - The first zinc enriched rice variety of India

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Technology 4:

DRR Dhan 45 - The first zinc enriched rice variety of India 

Technology Profile 

Utilizationof biofortified rice is a promising strategy helping the poor to meet their daily micronutrient requirement.

DRR Dhan 45, India’s first zinc - rich and high yielding variety was developed at ICAR-IIRR and released in India during 2015.

Developed from the cross IR 73707-45-3-2-3/ IR 77080-B-34-3, it is a biofortified semi-dwarf medium duration culture (~130 days) with non-lodging plant type and long slender grains recommended for cultivation in irrigated ecosystem yielding 5-6 t/ha.

It recorded 22 ppm Zinc in polished seed which is higher than the checks (Kalanamak: 20.4ppm) and Chittimuthyalu: 20.7 ppm).

It possessed good cooking quality traits namely intermediate amylose content (21.1%), intermediate ASV(3.5) and Gel Consistency (54 mm). 

Context 

Although rice is a major food crop, it is a poor source of essential micronutrients such as Zinc leading to hidden hunger (malnutrition).

Globally zinc deficiency is a major health problem affecting  nearly 17.3% of the population. It causes

stunting, reduced immunity, poor cognitive development and mortality among consumers.

Hence the genetic enhancement of rice with increased levels of Zn is a cost-effective strategy in combating  malnutrition.

The concerted efforts made for developing nutritious rice varieties at ICAR-IIRR during 2004

consequently led in the development of  DRR Dhan 45 (IET 23832), a  high yielding Zn rich variety (22ppm)  during 2015.

Empirical Evidences

•DRR Dhan 45 was notified at national level with 5-6 t/ha yield potential and average zinc content of 22 ppm in polished rice.

•Multilocation evaluation testing during 2013-14 in AICRP- biofortification trials showed its

superior performance in the states of Tamil Nadu, Karnataka and Andhra Pradesh wherein it has

out yielded the popular yield checks namely Samba Mahsuri and IR 64 by a average yield margin

of 37.1% and 17.2% respectively.

•In Tamil Nadu, IET 23832 surpassed the Samba Mahsuri and IR 64 by a yield margin of 70.2% and

60.3% respectively.

• In Karnataka, it gave 47.8% and 24.5% more yield than Samba Mahsuri and IR 64 respectively.

•Similarly, IET 23832 outyielded Samba Mahsuri and IR 64 by a yield margin of 8.3% and 15.5%

respectively in Andhra Pradesh

•DRR Dhan 45  is  a  proof  of  concept  for  Biofortification  and  can  address  the  hidden  hunger 

or mineral malnutrition, thus targeting  nutritional security of the nation.

 

Practical utility/Scalability

 

• In India people depend mostly on polished rice based foods as daily diet which is generally

deficient in Zinc. Poor people can’t afford to buy supplementary foods as well as zinc fortified

processed foods to have adequate supply of Zn.

•Diet involving biofortified rice helps in meeting daily requirement of Zn (7–13 mg per day for

adults) and thereby improving the  health of human beings.

• Also consumption of biofortified rice cuts down the expenses otherwise incurred on

supplementation and fortified foods of Zn particularly among the poor people. Hence consumption

of DRR Dhan 45 is alternative to mitigate  Zn malnutrition.

 

Technology / Concept developed by Dr.  V. Ravindra Babu and team

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