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Strategies to mitigate the adverse effect of drought stress on crop plants-influences of soil bacteria:A review

Pedosphere 2021年第3期31卷 496-509页

作者： Priyanka chandra Amoolya WUNNAVA Pooja VERMA amaresh chandra Rakesh Kumar SHARMA Indian Council of Agricultural Research(ICAR) Central Soil Salinity Research InstituteKarnalHaryana 132001India Department of Biosciences Manipal University JaipurRajasthanJaipur 303007India Indian Council of Agricultural Research(ICAR) Indian Institute of Sugarcane ResearchUttar PradeshLucknow 226002India

Drought stress affects plant growth and causes significant issues in meeting global demand for food crops and *** can cause physiological,physicochemical,and morphological changes in plants,which negatively affects plant growth and *** combat this under the increasing global threat of water shortage and rapid population expansion,it is crucial to develop strategies to meet global food *** growth-promoting rhizobacteria(PGPR)may provide a safe solution to enhancing crop yields through various *** soil bacteria can provide drought tolerance to crop plants,allowing them to survive and thrive in water-scarce *** of phytohormones,free radical-scavenging enzymes,and stress-combating enzymes that can increase tolerance to drought-induced stress are key features of plant-associated microbial *** review summarizes the beneficial properties of microbes that help plants tolerate water scarcity and highlights the bacterial mechanisms that enhance drought tolerance in plants.

关键词： abiotic stress agricultural yield drought tolerance food crops microbe PGPR rhizobactoria water deficit

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Multi-Frame Image Super-Resolution with Regularization

Multi-Frame Image Super-Resolution with Regularization

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作者： amaresh chandra Singh 上海交通大学

学位级别：硕士

The limited number of high cost sensors in many cameras produce aliased *** such cameras,the blur from the lens,color artifacts due to use of color filtering array,and noise from charged coupled devices（CCD）further degrade the quality of captured *** mitigate these problems,the multi-frame super-resolution algorithms are designed to reconstruct high-resolution image by acquiring and fusing several low-resolution frames of the same scene beyond camera’s resolution *** early methods on super-resolution,although optimal for particular model of noise and data,generated poor results when implemented on real ***,single image super-resolution methods are introduced to reduce the color artifacts,but unable to eradicate such type of errors due to insufficient prior *** this thesis,we propose an effective framework for the super-resolution problem to estimate the high-resolution image by using effective regularizations *** framework addresses the main issues related to regularization and robustness in the image *** this context,we propose the first novel edge preserving super-resolution model by using anisotropic diffusion process with

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Genetic Diversity and Lineage Based on SSR Markers of Two Genomic Resources among <i>Trifolium</i>Collections Held within the Australian Pastures Genebank

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Open Journal of Genetics 2019年第1期9卷 1-14页

作者： Devendra R. Malaviya Harsh Raman Brian S. Dear Rosy Raman Ajoy K. Roy Pankaj Kaushal amaresh chandra Steve J. Hughes ICAR—Indian Institute of Sugarcane Research Lucknow India Graham Centre for Agricultural Innovation Wagga Wagga Australia ICAR—Indian Grassland and Fodder Research Institute Jhansi India ICAR—National Institute of Biotic Stress Management Raipur India South Australian Research & Development Institute Urrbrae Australia

Trifolium alexandrinum, an important forage legume, suffers from narrow genetic base. The present investigation was envisaged to reveal the inter- and intra-species genetic diversity and lineage among 64 accessions, representing a global collection, of T. alexandrinum;it’s two probable progenitor species (T. salmoneum and T. subterraneum) and the three genetically distant species (T. repens, T. vesiculosum, T. michelianum). A set of Simple Sequence Repeats (SSR) primer-pairs developed from T. alexandrinum have shown to amplify alleles across the species under study, suggesting utility of the newly developed resource for assessing molecular diversity among Trifolium species. These SSRs markers together with previously reported SSRs, derived from T. repens, enabled to reveal high intra-species polymorphism in T. alexandrinum and successfully discriminate different species investigated in this study. The diverse accessions determined herein provide a superior resource for further breeding of T. alexandrinum. High allelic similarity of T. alexandrinum with T. subterraneum and T. salmoneum indicated close relatedness among the species, suggesting polyphyletic evolution of T. alexandrinum.

关键词： Egyptian Clover Evolution Genetic Resource Molecular Diversity

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Carbon and water footprints of major crop production in India

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Pedosphere 2023年第3期33卷 448-462页

作者： amaresh Kumar NAYAK Rahul TRIPATHI Manish DEBNATH Chinmaya Kumar SWAIN Biswaranjan DHAL Shanmugam VIJAYKUMAR Anshuman Debasis NAYAK Sangita MOHANTY Mohammad SHAHID Anjani KUMAR Manoj RAJAK Khitish chandra MOHARANA Dibyendu CHATTERJEE Susmita MUNDA Pravat GURU Rubina KHANAM Banwari LAL Priyanka GAUTAM Suschismita PATTANAIK Arvind Kumar SHUKLA Nuala FITTON Pete SMITH Himanshu PATHAK Indian Council of Agriculture Research(ICAR)-National Rice Research Institute Cuttack 753006(India) ICAR-Central Sheep and Wool Research Institute Avikanagar 304501(India) ICAR-National Research Centre on Camel Bikaner 304001(India) ICAR-Indian Institute of Soil Science Bhopal 462038(India) Institute of Biological and Environmental Sciences University of Aberdeen23St Machar DriveAberdeen AB243UU(UK)

Scarcity of water and emission of greenhouse gases(GHGs)are the two key environmental issues affecting crop production in *** the carbon footprint(CF)and water footprint(WF)of crop production can help to mitigate the environmental hazards that stem from GHG emissions and water *** CFs and WFs of three major cereal crops,rice,wheat,and maize,were estimated for the year 2014 under the environmental conditions in India,based on national statistics and other data *** CFs(TCFs)of rice,wheat,and maize in India were estimated to be 2.44,1.27,and 0.80 t CO_(2)equivalent ha-1,respectively,and product WFs for rice,wheat,and maize in India were 3.52,1.59,and 2.06 m3 kg^(-1),*** WF was found to be the highest in West India for rice and in South India for both wheat and maize,with the highest irrigation water use in these *** was a positive correlation between TCF and total WF,and hence mitigation of both was possibly simultaneous in various regions in *** measures for mitigating GHG emissions and optimizing water use for rice,wheat,and maize production in India are recommended in this paper.

关键词： cereal crop crop planning green water footprint greenhouse gas emission water productivity water use

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