Genetic diversity based on osmotic stress tolerance-related morpho-physiological traits and molecular markers in traditional rice cultivars

Nahar, Shamsun; Lahkar, Lipika; Islam, Aminul; Saikia, Debanjali; Shandilya, Zina Moni; Vemireddy, Lakshminarayana R.; Sahoo, Lingaraj; Tanti, Bhaben

doi:10.2478/s11756-020-00443-9

Cited by 7 publications

(3 citation statements)

References 17 publications

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“…The genotypes, i.e., ACM 20001, Kothamalli samba, Mikkuruvai , and NWGR-16022, which were plotted more away from origin, had highly diverse from other genotypes, which can be used in hybridization to ensure wide genetic variability in the recombinants. Nahar et al [ 48 ] revealed that four principal components together accounted for 77.94% of the variation among 50 rice genotypes. The results of both multivariate techniques showed a more or less similar pattern of grouping genotypes.…”

Section: Discussionmentioning

confidence: 99%

Identification of Newer Stable Genetic Sources for High Grain Number per Panicle and Understanding the Gene Action for Important Panicle Traits in Rice

Ariharasutharsan

Seshadri

Saraswathi

et al. 2023

Plants

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Rice is an important food crop extensively cultivated worldwide, and rice’s grain yield should be improved to meet future food demand. Grain number per panicle is the main trait that determines the grain yield in rice, and other panicle-related traits influence the grain number. To study the genetic diversity, 50 diverse Indian-origin germplasm were evaluated for grain number per panicle and other panicle traits for two consecutive seasons (Rabi 2019 and Kharif 2020). The maximum genotypic and phenotypic coefficient of variation was obtained for the number of spikelets and filled grains per panicle. The genotypes were grouped into eight clusters with Mahalanobis’ D2 analysis and six groups using Principal component analysis. Based on, per se, performance for grain number per panicle and genetic distances, six parents were selected and subjected to full diallel mating. The genotypes CB12132, IET 28749, and BPT 5204 were the best general combiners for the number of filled grains per panicle and other panicle branching traits, viz., the number of primary and secondary branches per panicle. The hybrid BPT 5204 × CB 12132 identified as the best specific combination for most of the studied panicle traits. The additive gene effects were high for the number of filled grains per panicle, the number of primary branches, and secondary branches, whereas non-additive gene action was high for the number of productive tillers and grain yield per plant. The information obtained from this study will be useful in rice breeding programs to improve panicle traits, especially the grain number, which would result in higher grain yield.

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Section: Discussionmentioning

confidence: 99%

Identification of Newer Stable Genetic Sources for High Grain Number per Panicle and Understanding the Gene Action for Important Panicle Traits in Rice

Ariharasutharsan

Seshadri

Saraswathi

et al. 2023

Plants

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“…In the present study, we have used the ISSR marker to study the genetic relatedness among 14 noncommercial banana accessions of Assam. ISSR marker system in our study showed polymorphisms of 89.66% which was adequate to distinguish the individuals precisely (Nahar et al, 2020). Each primer could generate polymorphism among the accessions, which may be due to mutation at priming sites.…”

Section: Discussionmentioning

confidence: 54%

Comparative Analysis of Genetic Diversity in Some Non-commercial Cultivars of Musa L. from Assam, India, Using Morphometric and ISSR Markers

Borborah

Saikia

Rehman

et al. 2020

International Journal of Fruit Science

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Northeast India is known for its diverse nature of soil, climate, and topography that supports rich banana diversity. Banana (Musa sp.) is the second most important fruit crop in India due to its availability throughout the year, taste along with the nutritive and medicinal value. Thus, the genetic diversity of banana resources is essential for present and future food. This study aimed to determine the comparative genetic variation among 14 non-commercial edible banana cultivars of Assam, India, by using 50 different morphological characters with ISSR markers. Morphological data were analyzed hierarchical clusters and principal coordinates which showed to cluster all the accessions into two distinct groups and subsequently into four subgroups. Furthermore, ISSR markers revealed the average percentage of polymorphism. A total of 62 bands were detected of which 56 bands showed polymorphism using seven primers. The highest number of the band was detected with the primer UBC-843 and the lowest number of the band was observed with UBC-848. The genetic similarity index was prepared using Jaccard's similarity coefficient and the range of genetic similarity was from 0.28 to 0.77 with 0.51 of average. Dendrogram produced from the cluster analysis showed the clear division of the genotypes into two distinct clusters. Seven accessions of viz. Bharatmoni, Assamiya-malbhog, Gobin tulashi, Bokmoni, Bangali-malbhog, Katiya-jahaji, and Abormalbhog were clustered in the first group. The second group included the accessions viz. Jatikol, Adeel, Guwahatia-kol, Fessamonohar, Athiya kol, Ximalu-monohar, and Bogi-monohar. The Mantel test analysis also showed positive relationships between morphological traits and ISSR markers.

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“…These 3 QTL will be useful for the enhancement of terminal drought stress tolerance through marker assisted breeding approach in rice. Osmotic stress related morpho-physiological and ISSR markers characteristics were implemented among 23 rice landraces by Naharet al (2020) [21] . Among 23 rice landraces, eight germplasm collected from various agro-climatic zones exhibited speculated level of tolerance, better adaption and resistance under osmotic stress treatment (Manjunatha et al, 2021) [17] .…”

Section: Molecular Breeding Approaches For Crop Improvement Using Traditional Rice Landracesmentioning

confidence: 99%

Exploration of traditional rice (Oryza sativa L.) land races: Scope for the future sustainable food production

Sivakumar¹,

Chitra²,

Gatta³

et al. 2021

Pharma Innovation

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Traditional landraces have more complex genetic backgrounds, abundant genetic diversity and heterogenecity, as well as strong adaptability to the environment and are the primary source an excellent resistance genes donors for various important pest and diseases. They provide new alleles for the improvement of commercially valuable traits in rice. Global climate change emphasizes the need to use better adapted cultivars of the main crops and traditional landraces as potential donors of useful genes. Traditional rice landraces are pest and disease resistance, and also resistance or tolerance to drought, water logging and flood situation. The traditional rice landraces are being gradually replaced by the incorporation of modern rice cultivars, thereby threatening the existence of many invaluable traits present in such local varieties. A large number of landraces of rice have disappeared from the irrigated field since the adoption of high yielding varieties (HYVs).Existing indigenous traditional rice can play an important role in the development of sustainable agriculture and also valuable for agronomical, social and cultural practices. Conventional breeding techniques are not alone to tap the genetic potential of rice landraces for commercial varietal improvement programme in rice. Molecular breeding programme is highly helpful into the breeders to elucidate the novel genes and QTLs from traditional rice landraces. These genes and QTLS will be introgressed into commercial rice verities through marker aided selection and using other biotechnological tools. This paper reviews the research findings related to improvement in yield, biotic and abiotic stress tolerance in traditional rice landraces.

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Genetic diversity based on osmotic stress tolerance-related morpho-physiological traits and molecular markers in traditional rice cultivars

Cited by 7 publications

References 17 publications

Identification of Newer Stable Genetic Sources for High Grain Number per Panicle and Understanding the Gene Action for Important Panicle Traits in Rice

Identification of Newer Stable Genetic Sources for High Grain Number per Panicle and Understanding the Gene Action for Important Panicle Traits in Rice

Comparative Analysis of Genetic Diversity in Some Non-commercial Cultivars of Musa L. from Assam, India, Using Morphometric and ISSR Markers

Exploration of traditional rice (Oryza sativa L.) land races: Scope for the future sustainable food production

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