In this study, we explore the global shifts in research priorities and strategies with respect to Plant Genetic Resources (PGR) over a period of nearly 3 decades and also look at changes in donor strategies over the same period, with specific reference to Japanese support to PGR work. We conducted a quantitative text analysis based on reports published by Bioversity International, a leader in PGR issues, and looked at changes in the frequency of appearance of certain terms and words over a 22-year period (1998-2020), divided into six phases. Results show that over the period, Bioversity International’s focus transitioned from an emphasis on collection of genetic resources and conservation in genebanks to conservation through sustainable use across generations. This evolved further to “food” -centered approaches. More recently, the emphasis is shifting to “food system” approaches with emphasis on the linkages between agriculture, environment and nutrition. The priority issues of the organization at the different phases are presented. Over the same period, Japanese government investment strategies have shifted from supporting PGR collection work to building capacity of researchers (in both source countries and Japan) and creating more benefits from PGR including nutrition, health and economic benefits to local societies who are the keepers of the PGR. The involvement of Japanese researchers, including the main author, in the various research activities characteristic of the different phases of the transition is presented. In the current global shift towards food systems approaches where the linkage of agriculture, nutrition, and the environment is emphasized, and the involvement of the private sector encouraged, partnerships with resource rich counters will be considered important in PGR activities in the future. Discipline: Biotechnology Additional key words: conservation, Japan’s assistance, plant genetic resources
{"title":"Three Decades of Safeguarding and Promoting Use of Agricultural Biodiversity: Changing Global Perspectives, Paradigm Shifts and Implications","authors":"Y. Morimoto, P. Maundu","doi":"10.6090/jarq.55.419","DOIUrl":"https://doi.org/10.6090/jarq.55.419","url":null,"abstract":"In this study, we explore the global shifts in research priorities and strategies with respect to Plant Genetic Resources (PGR) over a period of nearly 3 decades and also look at changes in donor strategies over the same period, with specific reference to Japanese support to PGR work. We conducted a quantitative text analysis based on reports published by Bioversity International, a leader in PGR issues, and looked at changes in the frequency of appearance of certain terms and words over a 22-year period (1998-2020), divided into six phases. Results show that over the period, Bioversity International’s focus transitioned from an emphasis on collection of genetic resources and conservation in genebanks to conservation through sustainable use across generations. This evolved further to “food” -centered approaches. More recently, the emphasis is shifting to “food system” approaches with emphasis on the linkages between agriculture, environment and nutrition. The priority issues of the organization at the different phases are presented. Over the same period, Japanese government investment strategies have shifted from supporting PGR collection work to building capacity of researchers (in both source countries and Japan) and creating more benefits from PGR including nutrition, health and economic benefits to local societies who are the keepers of the PGR. The involvement of Japanese researchers, including the main author, in the various research activities characteristic of the different phases of the transition is presented. In the current global shift towards food systems approaches where the linkage of agriculture, nutrition, and the environment is emphasized, and the involvement of the private sector encouraged, partnerships with resource rich counters will be considered important in PGR activities in the future. Discipline: Biotechnology Additional key words: conservation, Japan’s assistance, plant genetic resources","PeriodicalId":14700,"journal":{"name":"Jarq-japan Agricultural Research Quarterly","volume":"205 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85730130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
D. Naito, M. Moeliono, V. Chakov, V. Kuptsova, Kusin Kitso, W. Lintangah, R. Martin, N. Yulianti
{"title":"Climate Change and Social Forestry: An Overview of CIFOR Research on Enhancing Resilience in Boreal and Tropical Forest Landscape","authors":"D. Naito, M. Moeliono, V. Chakov, V. Kuptsova, Kusin Kitso, W. Lintangah, R. Martin, N. Yulianti","doi":"10.6090/jarq.55.543","DOIUrl":"https://doi.org/10.6090/jarq.55.543","url":null,"abstract":"","PeriodicalId":14700,"journal":{"name":"Jarq-japan Agricultural Research Quarterly","volume":"102 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76096659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Improving the Livelihood of Livestock and Farmers and Public Health in Developing Countries through the Provision of Solutions for the Various Risks They Face","authors":"K. Makita, Munenobu Ikegami, Tomoya Matsumoto","doi":"10.6090/jarq.55.533","DOIUrl":"https://doi.org/10.6090/jarq.55.533","url":null,"abstract":"","PeriodicalId":14700,"journal":{"name":"Jarq-japan Agricultural Research Quarterly","volume":"13 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75229308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Agriculture in the Semi-Arid Tropics with Sustainable Use of Scarce Resources: Contribution of Japanese Scientists through Collaboration with ICRISAT","authors":"S. Tobita","doi":"10.6090/jarq.55.433","DOIUrl":"https://doi.org/10.6090/jarq.55.433","url":null,"abstract":"","PeriodicalId":14700,"journal":{"name":"Jarq-japan Agricultural Research Quarterly","volume":"60 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77892828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Fish in Sustainable Food Systems of the 21st Century: Role of WorldFish Research on Food and Nutrition Security, Gender Equity, and Natural Resource Conservation","authors":"Y. Kura, N. Kawarazuka","doi":"10.6090/jarq.55.553","DOIUrl":"https://doi.org/10.6090/jarq.55.553","url":null,"abstract":"","PeriodicalId":14700,"journal":{"name":"Jarq-japan Agricultural Research Quarterly","volume":"39 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83008577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Seed tubers of potato (Solanum tuberosum) plants were grown in five locations in Japan: Hokkaido, Yamagata, Ibaraki, Hiroshima, and Nagasaki. One hundred colonies of pink-pigmented facultative methylotrophs (PPFMs) were isolated from potato leaves at flowering time. The 16S rRNA gene sequences of isolates were determined, and clustering analysis (≥ 99% identity) identified 11 operational taxonomic units (OTUs). Phylogenetic analysis revealed that all OTUs were grouped in genus Methylobacterium. The OTU M9 was distributed among all five collection sites, and other OTUs were distributed among several collection sites. These data indicated that the distribution of PPFMs in the potato phyllosphere differed according to the plant’s geographical location. Discipline: Agricultural Environment Additional key words: 16S rRNA, Methylobacterium, operational taxonomic units, seed tuber
{"title":"Distribution of Pink-pigmented Facultative Methylotrophs Isolated from the Leaves of Potato Grown in Different Regions of Japan","authors":"N. Someya, M. Kubota, Y. Unno, T. Morohoshi","doi":"10.6090/jarq.55.341","DOIUrl":"https://doi.org/10.6090/jarq.55.341","url":null,"abstract":"Seed tubers of potato (Solanum tuberosum) plants were grown in five locations in Japan: Hokkaido, Yamagata, Ibaraki, Hiroshima, and Nagasaki. One hundred colonies of pink-pigmented facultative methylotrophs (PPFMs) were isolated from potato leaves at flowering time. The 16S rRNA gene sequences of isolates were determined, and clustering analysis (≥ 99% identity) identified 11 operational taxonomic units (OTUs). Phylogenetic analysis revealed that all OTUs were grouped in genus Methylobacterium. The OTU M9 was distributed among all five collection sites, and other OTUs were distributed among several collection sites. These data indicated that the distribution of PPFMs in the potato phyllosphere differed according to the plant’s geographical location. Discipline: Agricultural Environment Additional key words: 16S rRNA, Methylobacterium, operational taxonomic units, seed tuber","PeriodicalId":14700,"journal":{"name":"Jarq-japan Agricultural Research Quarterly","volume":"294 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77094896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
K. Nakashima, T. Urao, Donghe Xu, S. Ando, Masayasu Kato
The second of the United Nations’ 17 Sustainable Development Goals aims to end hunger, achieve food security and improve nutrition, and promote sustainable agriculture. However, it is well known that the agricultural potential in developing regions including Africa has not been fully realized because adverse environments and changing climate conditions impose abiotic (e.g., low soil fertility, droughts) and biotic (e.g., pests, diseases) stresses on plant growth and development. To ensure food and nutrition security in such regions, the Environmental Stress-tolerant Crops project, the High-yielding Biomass Crops project and the Pest and Disease Control project in the Program for Stable Agricultural Production at the Japan International Research Center for Agricultural Sciences aimed to develop technologies and crops with high productivity and adaptability to adverse environments and changing climate conditions. In order to develop crops with environmental stress tolerance and disease resistance, we have clarified and used the genes and loci involved in these traits toward the development of breeding materials. And in order to develop technology for effectively controlling transboundary pests, we have elucidated the ecology of their occurrence and developed pest management technology based on that information. We hope that these materials and technologies will contribute to achieving food and nutrition security in developing regions.
{"title":"Technology Development for Stable Agricultural Production under Adverse Environments and Changing Climate Conditions","authors":"K. Nakashima, T. Urao, Donghe Xu, S. Ando, Masayasu Kato","doi":"10.6090/jarq.55.295","DOIUrl":"https://doi.org/10.6090/jarq.55.295","url":null,"abstract":"The second of the United Nations’ 17 Sustainable Development Goals aims to end hunger, achieve food security and improve nutrition, and promote sustainable agriculture. However, it is well known that the agricultural potential in developing regions including Africa has not been fully realized because adverse environments and changing climate conditions impose abiotic (e.g., low soil fertility, droughts) and biotic (e.g., pests, diseases) stresses on plant growth and development. To ensure food and nutrition security in such regions, the Environmental Stress-tolerant Crops project, the High-yielding Biomass Crops project and the Pest and Disease Control project in the Program for Stable Agricultural Production at the Japan International Research Center for Agricultural Sciences aimed to develop technologies and crops with high productivity and adaptability to adverse environments and changing climate conditions. In order to develop crops with environmental stress tolerance and disease resistance, we have clarified and used the genes and loci involved in these traits toward the development of breeding materials. And in order to develop technology for effectively controlling transboundary pests, we have elucidated the ecology of their occurrence and developed pest management technology based on that information. We hope that these materials and technologies will contribute to achieving food and nutrition security in developing regions.","PeriodicalId":14700,"journal":{"name":"Jarq-japan Agricultural Research Quarterly","volume":"399 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84845189","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
General Utilities for Genotyping Study (GUGS) is a toolbox for aiding the analysis of DNA marker data and its design in Microsoft Excel (MS Excel). GUGS provides more than 100 flexible functions for the manipulation, evaluation, and conversion of genotype data. It also provides functionalities for genotype format conversion to support linkage analysis using JoinMap software, frequency analysis for population genetics, parentage analysis, and statistical genetic analysis. Its functionality for the manipulation of nucleotide or amino acid sequences also assists DNA marker design. These GUGS features enable users to conduct all steps from DNA marker design to preliminary evaluation, data analysis, and format conversion for advanced study in a single environment without having to export/ import data. GUGS is freely available at https://github.com/tokurou/GUGS under the GPL v3 license. Discipline: Crop Science Additional key words: bioinformatics, breeding, DNA marker, genetics, linkage analysis
{"title":"General Utilities for Genotyping Study (GUGS): A Comprehensive Application in Genotype and Sequence Data Manipulation","authors":"T. Shimizu","doi":"10.6090/jarq.55.333","DOIUrl":"https://doi.org/10.6090/jarq.55.333","url":null,"abstract":"General Utilities for Genotyping Study (GUGS) is a toolbox for aiding the analysis of DNA marker data and its design in Microsoft Excel (MS Excel). GUGS provides more than 100 flexible functions for the manipulation, evaluation, and conversion of genotype data. It also provides functionalities for genotype format conversion to support linkage analysis using JoinMap software, frequency analysis for population genetics, parentage analysis, and statistical genetic analysis. Its functionality for the manipulation of nucleotide or amino acid sequences also assists DNA marker design. These GUGS features enable users to conduct all steps from DNA marker design to preliminary evaluation, data analysis, and format conversion for advanced study in a single environment without having to export/ import data. GUGS is freely available at https://github.com/tokurou/GUGS under the GPL v3 license. Discipline: Crop Science Additional key words: bioinformatics, breeding, DNA marker, genetics, linkage analysis","PeriodicalId":14700,"journal":{"name":"Jarq-japan Agricultural Research Quarterly","volume":"48 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89805428","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
F. Kobayashi, Tsuyoshi Tanaka, H. Kanamori, Jianzhon Wu, H. Handa
By successfully sequencing the entire genome of common wheat (Triticum aestivum L.) in 2018, the International Wheat Genome Sequencing Consortium (IWGSC) achieved its goal of publishing the first reference genome sequence of this important crop. During this period, various technological innovations have dramatically evolved genome sequencing technology; these advances have made it possible to rapidly decode large and complex genomes, including that of polyploid wheat. IWGSC completed reference genome sequence by exploiting these latest technologies via two primary approaches, “whole-genome sequencing” and “sequencing by chromosome.” As collaborators in the IWGSC project, a Japanese research team led by the National Agriculture and Food Research Organization was responsible for sequencing chromosome 6B, one of the 21 wheat chromosomes, and contributed to constructing the reference genome sequence. This article presents an outline of reference genome sequence construction and provides an overview of the common wheat genome information obtained. Moreover, it describes the methods used to sequence chromosome 6B, together with the associated analytical data and novel knowledge, including the structural analyses of Nor-B2 and Gli-B2 obtained during this work. Furthermore, it describes the recently undertaken sequencing of the genomes of diploid and tetraploid wheat and reviews the overall development of wheat genomic resources. Discipline: Biotechnology Additional key words: bacterial artificial chromosome library, next-generation sequencing, physical mapping, shotgun sequencing
{"title":"Reference Genome Sequencing and Advances in Genomic Resources in Common Wheat–Chromosome 6B Project in Japan","authors":"F. Kobayashi, Tsuyoshi Tanaka, H. Kanamori, Jianzhon Wu, H. Handa","doi":"10.6090/jarq.55.285","DOIUrl":"https://doi.org/10.6090/jarq.55.285","url":null,"abstract":"By successfully sequencing the entire genome of common wheat (Triticum aestivum L.) in 2018, the International Wheat Genome Sequencing Consortium (IWGSC) achieved its goal of publishing the first reference genome sequence of this important crop. During this period, various technological innovations have dramatically evolved genome sequencing technology; these advances have made it possible to rapidly decode large and complex genomes, including that of polyploid wheat. IWGSC completed reference genome sequence by exploiting these latest technologies via two primary approaches, “whole-genome sequencing” and “sequencing by chromosome.” As collaborators in the IWGSC project, a Japanese research team led by the National Agriculture and Food Research Organization was responsible for sequencing chromosome 6B, one of the 21 wheat chromosomes, and contributed to constructing the reference genome sequence. This article presents an outline of reference genome sequence construction and provides an overview of the common wheat genome information obtained. Moreover, it describes the methods used to sequence chromosome 6B, together with the associated analytical data and novel knowledge, including the structural analyses of Nor-B2 and Gli-B2 obtained during this work. Furthermore, it describes the recently undertaken sequencing of the genomes of diploid and tetraploid wheat and reviews the overall development of wheat genomic resources. Discipline: Biotechnology Additional key words: bacterial artificial chromosome library, next-generation sequencing, physical mapping, shotgun sequencing","PeriodicalId":14700,"journal":{"name":"Jarq-japan Agricultural Research Quarterly","volume":"14 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80480916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
To determine whether visits by wild pollinators correspond well with the physiological patterns of animal-pollinated crops, we investigated the diurnal dynamics of nectar secretion in the male and female flowers of cultivated kabocha squash Cucurbita maxima Duch, and its effect on the temporal visitation pattern by bumblebees, their Japanese wild pollinators, relative to visits by introduced honeybees Apis mellifera L. in Hokkaido, Japan. The amount of nectar secreted and the frequency of pollinator visits were monitored from floral opening at dawn until wilting in the early afternoon. Flowers of both sexes secreted nectar in a unimodal diurnal pattern, with secretion peaking during the middle stage of anthesis. The total production of nectar in female flowers was twice that in male flowers. Although the availability of pollinators varied between days, the frequency of visits by bumblebees corresponded well with the dynamics of nectar secretion by the flowers. The diurnal dynamics of nectar secretion and the large availability of nectar reward in female flowers would increase the probability of transferring viable pollen to female flowers and contributing to fruit production of this crop. Bumblebee visits were negatively correlated with honeybee visits. Although this negative correlation could be explained by the complementary effects of pollinators or competitive exclusion, the effects of introducing honeybees on wild pollinators cannot be easily evaluated and thus should be carefully examined by considering the local environmental context in future studies.
为了确定野生传粉者的访花是否与动物传粉作物的生理模式相吻合，我们在日本北海道研究了栽培的kabocha squash Cucurbita maxima Duch雌雄花的花蜜分泌的昼夜动态，以及它对日本野生传粉者大黄蜂与外来蜜蜂访花的影响。从黎明开花到午后凋谢，监测了花蜜分泌量和传粉者访问频率。雌雄花均以单峰模式分泌花蜜，在花期中期分泌高峰。雌花的花蜜总产量是雄花的两倍。虽然授粉者的可用性在不同的日子里有所不同，但大黄蜂的访问频率与花分泌花蜜的动态相对应。花蜜分泌的昼夜动态和雌花中大量的花蜜奖励增加了花粉向雌花传递的可能性，有助于该作物的果实生产。大黄蜂访视与蜜蜂访视呈负相关。尽管这种负相关可以用传粉媒介的互补效应或竞争性排斥来解释，但引入蜜蜂对野生传粉媒介的影响很难评估，因此在未来的研究中应考虑当地的环境背景，仔细检查。
{"title":"Diurnal Dynamics of Nectar Secretion in Cucurbita maxima Duch: Implications for Effective Pollen Transfer by Japanese Wild Pollinators","authors":"Shoko Nakamura, Hisatomo Taki, Y. Konno","doi":"10.6090/jarq.55.323","DOIUrl":"https://doi.org/10.6090/jarq.55.323","url":null,"abstract":"To determine whether visits by wild pollinators correspond well with the physiological patterns of animal-pollinated crops, we investigated the diurnal dynamics of nectar secretion in the male and female flowers of cultivated kabocha squash Cucurbita maxima Duch, and its effect on the temporal visitation pattern by bumblebees, their Japanese wild pollinators, relative to visits by introduced honeybees Apis mellifera L. in Hokkaido, Japan. The amount of nectar secreted and the frequency of pollinator visits were monitored from floral opening at dawn until wilting in the early afternoon. Flowers of both sexes secreted nectar in a unimodal diurnal pattern, with secretion peaking during the middle stage of anthesis. The total production of nectar in female flowers was twice that in male flowers. Although the availability of pollinators varied between days, the frequency of visits by bumblebees corresponded well with the dynamics of nectar secretion by the flowers. The diurnal dynamics of nectar secretion and the large availability of nectar reward in female flowers would increase the probability of transferring viable pollen to female flowers and contributing to fruit production of this crop. Bumblebee visits were negatively correlated with honeybee visits. Although this negative correlation could be explained by the complementary effects of pollinators or competitive exclusion, the effects of introducing honeybees on wild pollinators cannot be easily evaluated and thus should be carefully examined by considering the local environmental context in future studies.","PeriodicalId":14700,"journal":{"name":"Jarq-japan Agricultural Research Quarterly","volume":"22 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74783445","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：