Author
Listed:
- Priyanka Dwivedi
(Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi 110 012, India
Amity Institute of Organic Agriculture (AIOA), Amity University, Noida 201303, Uttar Pradesh, India)
- Naleeni Ramawat
(Amity Institute of Organic Agriculture (AIOA), Amity University, Noida 201303, Uttar Pradesh, India)
- Gaurav Dhawan
(Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi 110 012, India)
- Subbaiyan Gopala Krishnan
(Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi 110 012, India)
- Kunnummal Kurungara Vinod
(Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi 110 012, India)
- Madan Pal Singh
(Division of Plant Physiology, ICAR-Indian Agricultural Research Institute, New Delhi 110 012, India)
- Mariappan Nagarajan
(Rice Breeding and Genetics Research Centre, ICAR- Indian Agricultural Research Institute, Aduthurai 612 101, Tamil Nadu, India)
- Prolay Kumar Bhowmick
(Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi 110 012, India)
- Nimai Prasad Mandal
(Central Rainfed Upland Rice Research Station, ICAR-National Rice Research Institute, Post Box 48, Hazaribagh 825 301, Jharkhand, India)
- Puvvada Perraju
(College of Agriculture, Jawaharlal Nehru Krishi Vishwa Vidyalaya, Rewa 486 004, Madhya Pradesh, India)
- Haritha Bollinedi
(Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi 110 012, India)
- Ranjith Kumar Ellur
(Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi 110 012, India)
- Ashok Kumar Singh
(Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi 110 012, India)
Abstract
Reproductive stage drought stress (RSDS) is detrimental for rice, which affects its productivity as well as grain quality. In the present study, we introgressed two major quantitative trait loci (QTLs), namely, qDTY2.1 and qDTY3.1 , governing RSDS tolerance in a popular high yielding non-aromatic rice cultivar, Pusa 44, through marker-assisted backcross breeding (MABB). Pusa 44 is highly sensitive to RSDS, which restricts its cultivation across drought-prone environments. Foreground selection was carried out using markers, RM520 for qDTY3.1 and RM 521 for qDTY2.1 . Background selection was achieved with 97 polymorphic SSR markers in tandem with phenotypic selection to achieve faster recurrent parent genome (RPG) recovery. Three successive backcrosses followed by three selfings aided RPG recoveries of 98.6% to 99.4% among 31 near isogenic lines (NILs). Fourteen NILs were found to be significantly superior in yield and grain quality under RSDS with higher drought tolerance efficiency (DTE) than Pusa 44. Among these, the evaluation of two promising NILs in the multilocational trial during Kharif 2019 showed that they were significantly superior to Pusa 44 under reproductive stage drought stress, while performing on par with Pusa 44 under normal irrigated conditions. These di-QTL pyramided drought-tolerant NILs are in the final stages of testing the All India Coordinated Rice Improvement Project varietal trials for cultivar release. Alternately, the elite drought-tolerant Pusa 44 NILs will serve as an invaluable source of drought tolerance in rice improvement.
Suggested Citation
Priyanka Dwivedi & Naleeni Ramawat & Gaurav Dhawan & Subbaiyan Gopala Krishnan & Kunnummal Kurungara Vinod & Madan Pal Singh & Mariappan Nagarajan & Prolay Kumar Bhowmick & Nimai Prasad Mandal & Puvva, 2021.
"Drought Tolerant near Isogenic Lines (NILs) of Pusa 44 Developed through Marker Assisted Introgression of qDTY2.1 and qDTY3.1 Enhances Yield under Reproductive Stage Drought Stress,"
Agriculture, MDPI, vol. 11(1), pages 1-20, January.
Handle:
RePEc:gam:jagris:v:11:y:2021:i:1:p:64-:d:480403
Download full text from publisher
References listed on IDEAS
- Joshi, K. & Joshi, P.K. & Khan, M.T. & Kishore, A., 2018.
"Sticky Rice': Variety Inertia in a Technologically Progressive State of India,"
2018 Conference, July 28-August 2, 2018, Vancouver, British Columbia
277529, International Association of Agricultural Economists.
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