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Article

Introgression of qDTY1.1 Governing Reproductive Stage Drought Tolerance into an Elite Basmati Rice Variety “Pusa Basmati 1” through Marker Assisted Backcross Breeding

1
Division of Genetics, ICAR-Indian Agricultural Research Institute, New Delhi 110012, India
2
Amity Institute of Biotechnology, Amity University, Noida 201303, India
3
Division of Plant Physiology, ICAR-Indian Agricultural Research Institute, New Delhi 110012, India
4
Rice Breeding and Genetics Research Centre, ICAR-Indian Agricultural Research Institute, Aduthurai 612101, India
*
Author to whom correspondence should be addressed.
Present address: Regional Research station, ICAR-Central Soil Salinity Research Institute, Lucknow 226002, India.
Academic Editors: Kwon-Kyoo Kang and Yong-Gu Cho
Agronomy 2021, 11(2), 202; https://doi.org/10.3390/agronomy11020202
Received: 18 December 2020 / Revised: 14 January 2021 / Accepted: 15 January 2021 / Published: 21 January 2021
(This article belongs to the Special Issue Rice Genetics: Trends and Challenges for the Future Crops Production)
Drought stress at the reproductive stage in rice is one of the most important cause for yield reduction, affecting both productivity and quality. All Basmati rice varieties, including the popular cultivar “Pusa Basmati 1 (PB1)” is highly sensitive to reproductive stage drought stress (RSDS). We report for the first time, improvement of a Basmati cultivar for RSDS tolerance, with the introgression of a major quantitative trait locus (QTL), “qDTY1.1” into PB1. The QTL was sourced from an aus variety, Nagina 22 (N22). A microsatellite (simple sequence repeat (SSR)) marker “RM 431” located at telomeric end (38.89 mb) of chromosome 1, and located within a 1.04 mb QTL region was employed for foreground selection for qDTY1.1 in the marker assisted backcross breeding process. A set of 113 SSR markers polymorphic between N22 and PB1 were utilized for background selection to ensure higher recurrent parent genome recovery. After three backcrosses followed by five generations of selfing, eighteen near isogenic lines (NILs) were developed, through combinatory selection for agro-morphological, grain and cooking quality traits. The NILs were evaluated for three consecutive Kharif seasons, 2017, 2018 and 2019 under well-watered and drought stress conditions. RSDS tolerance and yield stability indicated that P1882-12-111-3, P1882-12-111-5, P1882-12-111-6, P1882-12-111-7, P1882-12-111-12, P1882-12-111-15 and P1882-12-111-17 were best in terms of overall agronomic and grain quality under RSDS. Additionally, NILs exhibited high yield potential under normal condition as well. The RSDS tolerant Basmati NILs with high resilience to water stress, is a valuable resource for sustaining Basmati rice production under water limiting production environments. View Full-Text
Keywords: Basmati rice; QTL introgression; near isogenic lines; yield under drought; climate resilience Basmati rice; QTL introgression; near isogenic lines; yield under drought; climate resilience
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MDPI and ACS Style

Dhawan, G.; Kumar, A.; Dwivedi, P.; Gopala Krishnan, S.; Pal, M.; Vinod, K.K.; Nagarajan, M.; Bhowmick, P.K.; Bollinedi, H.; Ellur, R.K.; Ravikiran, K.T.; Kumar, P.; Singh, A.K. Introgression of qDTY1.1 Governing Reproductive Stage Drought Tolerance into an Elite Basmati Rice Variety “Pusa Basmati 1” through Marker Assisted Backcross Breeding. Agronomy 2021, 11, 202. https://doi.org/10.3390/agronomy11020202

AMA Style

Dhawan G, Kumar A, Dwivedi P, Gopala Krishnan S, Pal M, Vinod KK, Nagarajan M, Bhowmick PK, Bollinedi H, Ellur RK, Ravikiran KT, Kumar P, Singh AK. Introgression of qDTY1.1 Governing Reproductive Stage Drought Tolerance into an Elite Basmati Rice Variety “Pusa Basmati 1” through Marker Assisted Backcross Breeding. Agronomy. 2021; 11(2):202. https://doi.org/10.3390/agronomy11020202

Chicago/Turabian Style

Dhawan, Gaurav, Aruna Kumar, Priyanka Dwivedi, Subbaiyan Gopala Krishnan, Madan Pal, Kunnummal Kurungara Vinod, Mariappan Nagarajan, Prolay Kumar Bhowmick, Haritha Bollinedi, Ranjith Kumar Ellur, Kuram Tirumala Ravikiran, Pankaj Kumar, and Ashok Kumar Singh. 2021. "Introgression of qDTY1.1 Governing Reproductive Stage Drought Tolerance into an Elite Basmati Rice Variety “Pusa Basmati 1” through Marker Assisted Backcross Breeding" Agronomy 11, no. 2: 202. https://doi.org/10.3390/agronomy11020202

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