Development of salinity tolerant version of a popular rice variety improved white ponni through marker assisted back cross breeding

Muthu, Valarmathi; Sasikala, R.; Rahman, Hazir; Jeyabalan, Nallathambi; Kambale, Rohit; Raveendran, M.

doi:10.1007/s40502-019-0440-x

Cited by 19 publications

(10 citation statements)

References 37 publications

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“…At 125 mM, IWP recorded only 26.7% germination, whereas all three BILs recorded more than 66.7%. This clearly indicated that introgression of Saltol loci enabled enhanced tolerance against salinity as reported earlier [20,21]. During vegetative stage stress, IWP recorded the maximum SES score of 9 (extreme susceptibility), whereas BILs exhibited an average SES score of 5.…”

Section: Controlsupporting

confidence: 83%

“…Gregorio, Senadhira [46] identified a major QTL Saltol in a salinity tolerant Pokkali responsible for maintaining Na + /K + homeostasis at the seedling stage. Introgression of the Saltol loci from Pokkali or its derivative, FL478, through MABB enabled the development of a salinity-tolerant version of popular rice varieties [20,21]. IWP is one of the popular rice varieties of South India known for its high yield, superior grain quality, and excellent cooking quality.…”

Section: Discussionmentioning

confidence: 99%

“…Independent attempts have been made to develop rice lines tolerating various biotic stresses through MAS [59,60]. Similarly, MAS has been successfully employed to develop abiotic stress tolerant genotypes viz., submergence-tolerant rice [17,24], salinity-tolerant rice [20,21,61], and drought-tolerant rice [5,[62][63][64]. Limited attempts have been made to pyramid more than 1-2 QTLs controlling tolerance against major abiotic stresses, except for the development of a drought-and submergence-tolerant version of TDK1 [4] Attempts to combine tolerance against the three major abiotic stresses namely, drought, salinity, and submergence through MABB are limited.…”

Section: Controlmentioning

confidence: 99%

“…Recent advancements in molecular genetics and genotyping led to the identification of major effect quantitative trait loci (QTLs) linked to major abiotic stresses viz., drought tolerance (qDTY 1.1 , qDTY 2.1 , qDTY 3.1 and qDTY 6.1 in Apo [10][11][12] and qDTY 12.1 in Way rarem [13], submergence tolerance Sub1 in FR13A [14], and salinity tolerance Saltol in Pokkali [15]. Deployment of the above QTLs through molecular breeding paved the way for the development and release of a submergencetolerant version of a popular rice variety Swarna [16], submergence-tolerant version of CO 43 [17], drought-tolerant version of IR64, namely DRR Dhan 42, drought-tolerant MR219 [5], drought-tolerant Sabitri [18], salinity-tolerant version of BR28 [19], salinity-tolerant Pusa Basmati 1 [20], and salinity-tolerant Improved White Ponni (IWP) [21] through the marker assisted back cross breeding (MABB) approach. However, very little research has been conducted to develop multiple abiotic stress-tolerant rice genotype(s) by pyramiding QTLs that control tolerance against drought, salinity, and submergence through marker assisted selection (MAS).…”

Section: Introductionmentioning

confidence: 99%

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Pyramiding QTLs controlling tolerance against drought, salinity, and submergence in rice through marker assisted breeding

et al. 2020

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Increases in rice productivity are significantly hampered because of the increase in the occurrence of abiotic stresses, including drought, salinity, and submergence. Developing a rice variety with inherent tolerance against these major abiotic stresses will help achieve a sustained increase in rice production under unfavorable conditions. The present study was conducted to develop abiotic stress-tolerant rice genotypes in the genetic background of the popular rice variety Improved White Ponni (IWP) by introgressing major effect quantitative trait loci (QTLs) conferring tolerance against drought (qDTY 1.1 , qDTY 2.1), salinity (Saltol), and submergence (Sub1) through a marker assisted backcross breeding approach. Genotyping of early generation backcrossed inbred lines (BILs) resulted in the identification of three progenies, 3-11-9-2, 3-11-11-1, and 3-11-11-2, possessing all four target QTLs and maximum recovery of the recurrent parent genome (88.46%). BILs exhibited consistent agronomic and grain quality characters compared to those of IWP and enhanced performance against dehydration, salinity, and submergence stress compared with the recurrent parent IWP. BILs exhibited enhanced tolerance against salinity during germination and increased shoot length, root length, and vigor index compared to those of IWP. All three BILs exhibited reduced symptoms of injury because of salinity (NaCl) and dehydration (PEG) than did IWP. At 12 days of submergence stress, BILs exhibited enhanced survival and greater recovery, whereas IWP failed completely. BILs were found to exhibit on par grain and cooking quality characteristics with their parents. Results of this study clearly demonstrated the effects of the target QTLs in reducing damage caused by drought, salinity, and submergence and lead to the development of a triple stress tolerant version of IWP.

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Section: Controlsupporting

confidence: 83%

Section: Discussionmentioning

confidence: 99%

Section: Controlmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Pyramiding QTLs controlling tolerance against drought, salinity, and submergence in rice through marker assisted breeding

et al. 2020

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“…The wealth of information emanating from the post-genomic era has enabled a better understanding of the physiological, biochemical, and molecular mechanisms involved in genotype and its relationship with the phenotype especially for complex traits, facilitated systematic improvement of crop breeding, and allowed for the efficient use of genetic resources. Novel DNA-driven breeding techniques such as marker-assisted selection ( Ghatak et al, 2017 ), gene pyramiding ( Chen et al, 2008 ; Singh et al, 2013 ), marker-assisted backcross breeding, ( Valarmathi et al, 2019 ; Ponnuswamy et al, 2020 ), speed breeding technology ( Chiurugwi et al, 2019 ; Hickey et al, 2019 ) and a combination of them have been utilized in several crops such as rice, soya bean, maize and wheat. To our knowledge, no finger millet variety has been developed and released based on marker-assisted selection (MAS) technique to date, despite the potential of MAS in other cereal crops improvement has been demonstrated for important traits such as bacterial blight resistance in rice ( Pandey et al, 2013 ).…”

Section: Introductionmentioning

confidence: 99%

Breeding Strategies and Challenges in the Improvement of Blast Disease Resistance in Finger Millet. A Current Review

Mbinda

Masaki

2021

Front. Plant Sci.

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Climate change has significantly altered the biodiversity of crop pests and pathogens, posing a major challenge to sustainable crop production. At the same time, with the increasing global population, there is growing pressure on plant breeders to secure the projected food demand by improving the prevailing yield of major food crops. Finger millet is an important cereal crop in southern Asia and eastern Africa, with excellent nutraceutical properties, long storage period, and a unique ability to grow under arid and semi-arid environmental conditions. Finger millet blast disease caused by the filamentous ascomycetous fungus Magnaporthe oryzae is the most devastating disease affecting the growth and yield of this crop in all its growing regions. The frequent breakdown of blast resistance because of the susceptibility to rapidly evolving virulent genes of the pathogen causes yield instability in all finger millet-growing areas. The deployment of novel and efficient strategies that provide dynamic and durable resistance against many biotypes of the pathogen and across a wide range of agro-ecological zones guarantees future sustainable production of finger millet. Here, we analyze the breeding strategies currently being used for improving resistance to disease and discuss potential future directions toward the development of new blast-resistant finger millet varieties, providing a comprehensive understanding of promising concepts for finger millet breeding. The review also includes empirical examples of how advanced molecular tools have been used in breeding durably blast-resistant cultivars. The techniques highlighted are cost-effective high-throughput methods that strongly reduce the generation cycle and accelerate both breeding and research programs, providing an alternative to conventional breeding methods for rapid introgression of disease resistance genes into favorable, susceptible cultivars. New information and knowledge gathered here will undoubtedly offer new insights into sustainable finger millet disease control and efficient optimization of the crop’s productivity.

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Molecular Breeding for Improving Salinity Tolerance in Rice: Recent Progress and Future Prospects

Chapagain

Singh

Garcia

et al. 2021

Molecular Breeding for Rice Abiotic Stress Tolerance and Nutritional Quality

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Development of salinity tolerant version of a popular rice variety improved white ponni through marker assisted back cross breeding

Cited by 19 publications

References 37 publications

Pyramiding QTLs controlling tolerance against drought, salinity, and submergence in rice through marker assisted breeding

Pyramiding QTLs controlling tolerance against drought, salinity, and submergence in rice through marker assisted breeding

Breeding Strategies and Challenges in the Improvement of Blast Disease Resistance in Finger Millet. A Current Review

Molecular Breeding for Improving Salinity Tolerance in Rice: Recent Progress and Future Prospects

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