Dynamical climatic model for time to flowering in Vigna radiata
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RESEARCH
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Dynamical climatic model for time to flowering in Vigna radiata Konstantin Kozlov1 , Alena Sokolkova1 , Cheng-Ruei Lee2 , Chau-Ti Ting2 , Roland Schafleitner3 , Eric Bishop-von Wettberg4 , Sergey Nuzhdin5 and Maria Samsonova1* From Fifth International Scientific Conference “Plant Genetics, Genomics, Bioinformatics, and Biotechnology” (PlantGen2019) Novosibirsk, Russia. 24–29 June 2019
Abstract Background: Phenology data collected recently for about 300 accessions of Vigna radiata (mungbean) is an invaluable resource for investigation of impacts of climatic factors on plant development. Results: We developed a new mathematical model that describes the dynamic control of time to flowering by daily values of maximal and minimal temperature, precipitation, day length and solar radiation. We obtained model parameters by adaptation to the available experimental data. The models were validated by cross-validation and used to demonstrate that the phenology of adaptive traits, like flowering time, is strongly predicted not only by local environmental factors but also by plant geographic origin and genotype. Conclusions: Of local environmental factors maximal temperature appeared to be the most critical factor determining how faithfully the model describes the data. The models were applied to forecast time to flowering of accessions grown in Taiwan in future years 2020-2030. Keywords: Vigna, Mungbean, Model, Climatic factors, GWAS
Background Among the cultivated species in the legume family, mungbean (Vigna radiata (L.) Wilczek), also known as green gram) has become one of the important crops across Asia and beyond, showing a steady increase in global production (FAO 2018). This short duration legume crop fits easily as a rotation crop into cereal based production systems, adding nitrogen to the soil for the following crop, and providing additional income for farmers. Mungbean is a valuable source of protein and contains high amounts of the essential micronutrients folate and iron. Beyond the agronomic value of mungbean, certain features make *Correspondence: [email protected] Peter the Great St. Petersburg Polytechnic University, 29 Polytechnicheskaya, 195251 St.Petersburg, Russia Full list of author information is available at the end of the article 1
it a well-suited model organism among legume plants due to its relatively small genome size, short life-cycle, self-pollination, and close genetic relationship to other important legume crops. Mungbean is often produced in marginal areas or during hot seasons, where abiotic stress limits its productivity. Mungbean yellow mosaic disease (Begomovirus strains), which is transmitted by whitefly (Bemisia tabaci) has significant impacts on yields as well harvests [1]. Biodiverse collections of mungbean and related species are available in various genebanks, e.g. at the World Vegetable Center (Taiwan), in the National Bureau of Plant Genetic Resources (India), in the Institute of Crop Germplasm Resources (China), the Plant Genetic Resources Conservati
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