Evaluation of indigenous aromatic rice cultivars from sub-Himalayan Terai region of India for nutritional attributes and blast resistance

Evaluation of indigenous aromatic rice cultivars from sub-Himalayan Terai region of India for nutritional attributes and blast resistance

Indigenous folk rice cultivars often possess remarkable but unrevealed potential in terms of nutritional attributes and biotic stress tolerance. The unique cooking qualities and blissful aroma of many of these landraces make it an attractive low-cost alternative to high priced Basmati rice. Sub-Hima...

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Bibliographic Details
Published in:Scientific reports Vol. 11; no. 1; p. 4786
Main Authors: Mondal, Debayan, Kantamraju, Prudveesh, Jha, Susmita, Sundarrao, Gadge Sushant, Bhowmik, Arpan, Chakdar, Hillol, Mandal, Somnath, Sahana, Nandita, Roy, Bidhan, Bhattacharya, Prateek Madhab, Chowdhury, Apurba Kr, Choudhury, Ashok
Format: Journal Article
Language:English
Published: London Nature Publishing Group UK 26-02-2021
Nature Publishing Group
Nature Portfolio
Subjects:
631/337
631/449
631/45
631/61
Agrobiodiversity
Amylose
Antioxidants
Aroma
Association analysis
Cooking
Cultivars
Disease Resistance
Disease tolerance
Genes, Plant
Genetic diversity
Genetic Variation
Genotypes
Humanities and Social Sciences
India
Microsatellite Repeats
multidisciplinary
Nutrient deficiency
Nutritive value
Oryza - genetics
Plant Diseases - genetics
Principal components analysis
Rice
Rice blast
Science
Science (multidisciplinary)
Starch
Stress, Physiological
India
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Summary:Indigenous folk rice cultivars often possess remarkable but unrevealed potential in terms of nutritional attributes and biotic stress tolerance. The unique cooking qualities and blissful aroma of many of these landraces make it an attractive low-cost alternative to high priced Basmati rice. Sub-Himalayan Terai region is bestowed with great agrobiodiversity in traditional heirloom rice cultivars. In the present study, ninety-nine folk rice cultivars from these regions were collected, purified and characterized for morphological and yield traits. Based on traditional importance and presence of aroma, thirty-five genotypes were selected and analyzed for genetic diversity using micro-satellite marker system. The genotypes were found to be genetically distinct and of high nutritive value. The resistant starch content, amylose content, glycemic index and antioxidant potential of these genotypes represented wide variability and ‘Kataribhog’, ‘Sadanunia’, ‘Chakhao’ etc. were identified as promising genotypes in terms of different nutritional attributes. These cultivars were screened further for resistance against blast disease in field trials and cultivars like ‘Sadanunia’, ‘T4M-3-5’, ‘Chakhao Sampark’ were found to be highly resistant to the blast disease whereas ‘Kalonunia’, ‘Gobindabhog’, ‘Konkanijoha’ were found to be highly susceptible. Principal Component analysis divided the genotypes in distinct groups for nutritional potential and blast tolerance. The resistant and susceptible genotypes were screened for the presence of the blast resistant pi genes and association analysis was performed with disease tolerance. Finally, a logistic model based on phenotypic traits for prediction of the blast susceptibility of the genotypes is proposed with more than 80% accuracy.
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ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-021-83921-7