DRR Dhan 65 (IET 27641) – A High Yielding Low Soil Phosphorous Tolerant and Climate Resilient Rice Variety Developed from Wild Introgression Lines
Authors:   ICAR-Indian Institute of Rice Research (ICAR-IIRR), Rajendranagar, Hyderabad – 500030, Balakrishnan Divya , Neelamraju Sarla ,   ICAR-Indian Institute of Rice Research (ICAR-IIRR), Rajendranagar, Hyderabad – 500030, Bhadana Vijai Pal ,   ICAR-Indian Institute of Rice Research (ICAR-IIRR), Rajendranagar, Hyderabad – 500030, Badri Jyothi ,   ICAR-Indian Institute of Rice Research (ICAR-IIRR), Rajendranagar, Hyderabad – 500030, LV Subba Rao ,   ICAR-Indian Institute of Rice Research (ICAR-IIRR), Rajendranagar, Hyderabad – 500030, RM Sundaram ,   ICAR-Indian Institute of Rice Research (ICAR-IIRR), Rajendranagar, Hyderabad – 500030, D Subrahmanyam ,   ICAR-Indian Institute of Rice Research (ICAR-IIRR), Rajendranagar, Hyderabad – 500030, SR Voleti ,   ICAR-Indian Institute of Rice Research (ICAR-IIRR), Rajendranagar, Hyderabad – 500030, G Padmavathi ,   ICAR-Indian Institute of Rice Research (ICAR-IIRR), Rajendranagar, Hyderabad – 500030, AVSR Swamy ,   ICAR-Indian Institute of Rice Research (ICAR-IIRR), Rajendranagar, Hyderabad – 500030, P Senguttuvel ,   ICAR-Indian Institute of Rice Research (ICAR-IIRR), Rajendranagar, Hyderabad – 500030, SK Magrauithia ,   ICAR-Indian Institute of Rice Research (ICAR-IIRR), Rajendranagar, Hyderabad – 500030, MS Anantha ,   ICAR-Indian Institute of Rice Research (ICAR-IIRR), Rajendranagar, Hyderabad – 500030, J Aravind Kumar ,   ICAR-Indian Institute of Rice Research (ICAR-IIRR), Rajendranagar, Hyderabad – 500030, MS Prasad ,   ICAR-Indian Institute of Rice Research (ICAR-IIRR), Rajendranagar, Hyderabad – 500030, GS Laha ,   ICAR-Indian Institute of Rice Research (ICAR-IIRR), Rajendranagar, Hyderabad – 500030, D Ladhalakshmi ,   ICAR-Indian Institute of Rice Research (ICAR-IIRR), Rajendranagar, Hyderabad – 500030, V Jhansi Lakshmi ,   ICAR-Indian Institute of Rice Research (ICAR-IIRR), Rajendranagar, Hyderabad – 500030, Ch Padmavathi ,   ICAR-Indian Institute of Rice Research (ICAR-IIRR), Rajendranagar, Hyderabad – 500030, AP Padmakumari ,   ICAR-Indian Institute of Rice Research (ICAR-IIRR), Rajendranagar, Hyderabad – 500030, B Jhansi Rani ,   ICAR-Indian Institute of Rice Research (ICAR-IIRR), Rajendranagar, Hyderabad – 500030, R Mahendrakumar ,   ICAR-Indian Institute of Rice Research (ICAR-IIRR), Rajendranagar, Hyderabad – 500030, B Sreedevi ,   ICAR-Indian Institute of Rice Research (ICAR-IIRR), Rajendranagar, Hyderabad – 500030, Tuti Mangaldeep ,   ICAR-Indian Institute of Rice Research (ICAR-IIRR), Rajendranagar, Hyderabad – 500030, K Surekha ,   ICAR-Indian Institute of Rice Research (ICAR-IIRR), Rajendranagar, Hyderabad – 500030, - Brajendra ,   ICAR-Indian Institute of Rice Research (ICAR-IIRR), Rajendranagar, Hyderabad – 500030, K Suneeta ,   ICAR-Indian Institute of Rice Research (ICAR-IIRR), Rajendranagar, Hyderabad – 500030, P Revathi ,   ICAR-Indian Institute of Rice Research (ICAR-IIRR), Rajendranagar, Hyderabad – 500030, C Gireesh ,   ICAR-Indian Institute of Rice Research (ICAR-IIRR), Rajendranagar, Hyderabad – 500030, RA Fiyaz ,   ICAR-Indian Institute of Rice Research (ICAR-IIRR), Rajendranagar, Hyderabad – 500030, MB Kalyani ,   ICAR-Indian Institute of Rice Research (ICAR-IIRR), Rajendranagar, Hyderabad – 500030, Ch Suvarna Rani ,   ICAR-Indian Institute of Rice Research (ICAR-IIRR), Rajendranagar, Hyderabad – 500030, K Sruthi ,   ICAR-Indian Institute of Rice Research (ICAR-IIRR), Rajendranagar, Hyderabad – 500030, B Nirmala ,   ICAR-Indian Institute of Rice Research (ICAR-IIRR), Rajendranagar, Hyderabad – 500030, E Nagarjuna ,   ICAR-Indian Institute of Rice Research (ICAR-IIRR), Rajendranagar, Hyderabad – 500030, M Vijay Kumar ,   ICAR-Indian Institute of Rice Research (ICAR-IIRR), Rajendranagar, Hyderabad – 500030, M Thaseen ,   ICAR-Indian Institute of Rice Research (ICAR-IIRR), Rajendranagar, Hyderabad – 500030, M Pradeep Reddy ,   ICAR-Indian Institute of Rice Research (ICAR-IIRR), Rajendranagar, Hyderabad – 500030, Adari Prasad Babu ,   ICAR-Indian Institute of Rice Research (ICAR-IIRR), Rajendranagar, Hyderabad – 500030, Surapaneni Malathi ,   ICAR-Indian Institute of Rice Research (ICAR-IIRR), Rajendranagar, Hyderabad – 500030, V Vishnu Prasanth ,   ICAR-Indian Institute of Rice Research (ICAR-IIRR), Rajendranagar, Hyderabad – 500030, EA Siddique ,   ICAR-Indian Institute of Rice Research (ICAR-IIRR), Rajendranagar, Hyderabad – 500030
Published: January 2024

The wild species of Oryza are an important source of genetic variability for the improvement of yield and tolerance to biotic and abiotic stresses. Phosphorus (P) is the second most important key nutrient, vital for plant growth and development at all stages. Phosphorous deficiency is one of the factors limiting rice yields and farmer’s profitability so it is necessary to identify genotypes with stable yield and tolerance to P deficiency. Keeping in view the unlimited potential of wild species for yield enhancement and stress tolerance, interspecific population between Oryza rufipogon in the back ground of Oryza sativa genotype KMR3 was developed by advanced back cross breeding strategy. DRR Dhan 65 (IET 27641) (RP Bio 4919-B-B NSR86) is an interspecific wild introgression line, a derivative of KMR 3 / O rufipogon with short bold grains which is high yielding under both normal and low soil phosphorous conditions. It has seed to seed maturity of 130- 135 days and gives an average yield of 6.5 t/ ha (under normal conditions; 60 kg/ha of P, i.e., recommended dose) and 4.7 t/ ha (under low Phosphorus; 40 kg/ha of P). It was released for cultivation in Andhra Pradesh, Telangana, Karnataka, Chhattisgarh, Jharkhand and Maharashtra states through Central Sub-committee on Crop Standards, Notification and Release of Varieties for Agricultural Crops vide S.O. 4065(E) dated 31st August, 2022 [CG-DL-E-31082022-238490].