Phylogenetic Relationship of Oats (Avena sativa L): A Guide to Conservation and Utilisation of Genetic Resources

Ahmad, Mushtaq; Jehangir, Intikhab Aalum; Rizvan, R. M.; Dar, Showkat Ahmad; Iqbal, Saleem; Wani, Sajad H; Mehraj, Uzma; Hassan, Rohie

doi:10.20546/ijcmas.2020.911.101

Cited by 8 publications

(4 citation statements)

References 6 publications

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“…Based on world cereal production statistics, oats rank sixth in production, after wheat, maize, rice, barley, and sorghum. Oats are an excellent source of protein, fiber, and minerals, but as agricultural mechanization progressed in the 1930s and 1950s, the global oat production declined [2]. In some ecosystems of developing and developed nations, oats are a significant crop for people with specific usage.…”

Section: Introductionmentioning

confidence: 99%

Effects of Ascorbic Acid and/or α-Tocopherol on Agronomic and Physio-Biochemical Traits of Oat (Avena sativa L.) under Drought Condition

et al. 2022

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Water stress is notably a critical environmental condition restricting plant growth and economic outputs in semi-arid and arid environments. In a pot experiment, we explored the potential function of α-tocopherol (α-toc) and/or ascorbic acid (AsA) on the agronomic and physio-biochemical features of oat grown in water-scarce conditions. Drought duration significantly reduced the soil electrical conductivity and pH but increased the soil temperature, influencing the nutrient availability and uptake. For example, post-drought (25 days) soil analysis indicated that electrical conductivity decreased from 597 to 306 mS/m, total dissolved solids from 298 to 153 mg/L, and pH from 7.5 to 6.3 in 25 days of drought. Further, the drought-stressed leaves also contained significantly lower metabolites, such as proline, protein, sugar, and glycine betaine, than the control leaves, indicating impaired plant defense mechanisms. Significantly increased enzymatic antioxidants in leaves (e.g., superoxide dismutase, ascorbate peroxidase, and peroxidase) suggested the inability of oat plants to overcome drought-induced oxidative damage. In contrast, AsA and/or α-toc significantly amplified the seed germination rates and plant growth. Taken together, our results demonstrate that AsA and α-toc have the capability to mitigate adverse effects of drought conditions on oat plants by improving leaf relative water contents, photosynthetic pigments, and the antioxidant defense system.

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Section: Introductionmentioning

confidence: 99%

Effects of Ascorbic Acid and/or α-Tocopherol on Agronomic and Physio-Biochemical Traits of Oat (Avena sativa L.) under Drought Condition

et al. 2022

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“…Recently, there has been a number of works dealing with the molecular aspects of the evolution and phylogeny of the genus Avena (Fu, 2018;Peng et al, 2018Peng et al, , 2022Latta et al, 2019;Ahmad et al, 2020;Liu et al, 2020;Fominaya et al, 2021;Jiang et al, 2021;Yan et al, 2021). These studies use various markers, such as the ITS15.8S rRNAITS2 sequences (Rodionov et al, 2005;Tyupa et al, 2009), and external transcribed spacers (Rodrigues et al, 2017).…”

Section: Dna Markers and Genomic Technologies In Evolution Studies Of...mentioning

confidence: 99%

The application of Vavilov’s approaches to the phylogeny and evolution of cultivated species of the genus <i>Avena</i> L.

Loskutov,

Gnutikov,

Blinova

et al. 2023

Vestn. VOGiS

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The central problem that Vavilov was investigating was the overall concept of global plant genetic resources. The theoretical basis of this concept consisted of the law of homologous series in variation, research on the problem of species as a system, botanical and geographical bases of plant breeding, and the key theory of the centers of origin of cultivated plants. The VIR global collection of plant genetic resources collected by Vavilov and his associates from all over the world reflects the fullness of botanical, morphological and genetic diversity, and can be used for historical, evolutionary, phylogenetic and applied breeding research aimed at unlocking the potential of all the collection material. The whole diversity of cultivated oats, as was proved by Vavilov, had originated from segetal weeds. This process can be clearly traced in Spain on the example of the cultivated diploid species A. strigosa, A. abyssinica in Ethiopia, A. byzantina in Turkey and Iran, and on segetal forms of A. sativa. The studies of the morphological features as a whole do not yield a complete picture of the evolutionary and systematic status of some oat species and forms. The methods and approaches that use DNA markers and genomic technologies, and are promising for the study of oat polymorphism and phylogeny have been actively researched recently. A number of works devoted to the molecular aspects of the evolution and phylogeny of the genus Avena have recently appeared. The research uses various markers of genes, gene regions, intergenic spacers (internal and external), both nuclear and chloroplast and mitochondrial, genomic approaches and other modern methods. On the basis of a comprehensive study of the complete intraspecific diversity from different zones of the distribution range of cultivated oat species as well as on the basis of an analysis of data on the geography of forms and species distribution ranges, it was established that the process of hexaploid species formation also took place in the western part of the Mediterranean, and subsequently, when moving eastward, these forms started occupying all the vast spaces in the region of the Southwest Asian center, forming a large intraspecific diversity of wild forms and weedy ones in transit to cultivated hexaploid oat species. An analysis of the intraspecific diversity of landraces has specified the centers of morphogenesis of all cultivated oat species. The phylogenetic analysis of the representative intraspecific diversity of cultivated and wild Avena species carried out using next generation sequencing (NGS) showed that diploid species with A-genome variants are in fact not primary diploids, but a peculiar Mediterranean introgressive hybridization complex of species that sporadically enter into interspecific hybridization. It was established that the tetraploid cultivated species A. abyssinica had most likely originated from the wild A. vaviloviana. An analysis of the ways of A. sativa and A. byzantina domestication showed that the most widespread ribotype of the A. sativa hexaploid was inherited from A. ludoviciana, and the second most widespread one, from A. magna, while A. byzantina has two unique ribotype families, most likely inherited from an extinct oat species or a still undiscovered cryptospecies.

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“…Oat (Avena sativa L.), a member of the Poaceae family, stands as the sixth-largest cereal crop globally, trailing wheat, maize, rice, barley, and sorghum [1] . With a 2019 global production of 23 million tonnes, Russia and Canada took the lead, contributing approximately 20% each to the world total, followed by significant producers such as Poland, Finland, Australia, and the United Kingdom.…”

Section: Introductionmentioning

confidence: 99%

Analysis of phenophasic development, growth parameters, and physiological efficiency in diverse oat cultivars

Prajapati,

Samaiya,

Singh

et al. 2024

Int. J. Res. Agron.

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During the Rabi season of 2020-21, field experiment was conducted as part of the All India Coordinated Research Project (AICRP) on Fodder Research and Physiology at the College of Agriculture, JNKVV, and Jabalpur (MP) to evaluate 16 oat genotypes using a Randomized Block Design with three replications. This study examines the developmental traits and physiological parameters of various oat genotypes, focusing on how these traits vary between genotypes. The results reveal significant differences in Phenophasic development, with IVTSC-3 displaying more extended periods for boot initiation, flower initiation, 50 per cent flowering, grain development, physiological maturity, and harvestable maturity compared to IVTSC-8, which had the shortest durations. Physiological assessments show that IVTSC-3 has the highest leaf area index, leaf area duration at 60 and 90 days, crop growth rate, and relative growth rate, while IVTSC-8 has the lowest values for all physiological observations. These findings underscore the importance of considering genotype-specific responses in oat growth dynamics, providing vital insights for oat breeding programs and agronomic practices that aim to enhance crop productivity and resilience.

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Phylogenetic Relationship of Oats (Avena sativa L): A Guide to Conservation and Utilisation of Genetic Resources

Cited by 8 publications

References 6 publications

Effects of Ascorbic Acid and/or α-Tocopherol on Agronomic and Physio-Biochemical Traits of Oat (Avena sativa L.) under Drought Condition

Effects of Ascorbic Acid and/or α-Tocopherol on Agronomic and Physio-Biochemical Traits of Oat (Avena sativa L.) under Drought Condition

The application of Vavilov’s approaches to the phylogeny and evolution of cultivated species of the genus <i>Avena</i> L.

Analysis of phenophasic development, growth parameters, and physiological efficiency in diverse oat cultivars

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