2025年3月17日,国际顶级学术期刊《自然·遗传学》(Nature Genetics)刊发题为“Genomic analysis of 1325 Camellia accessions sheds light on agronomic and metabolic traits for tea plant improvement”的研究性论文。该研究...2025年3月17日,国际顶级学术期刊《自然·遗传学》(Nature Genetics)刊发题为“Genomic analysis of 1325 Camellia accessions sheds light on agronomic and metabolic traits for tea plant improvement”的研究性论文。该研究由福建省农业科学院茶叶研究所与中国农业科学院农业基因组研究所等多家单位合作完成。本研究通过对茶树及其近缘种的基因组进行深度重测序,构建了全面的茶树基因组遗传变异图谱,进而揭示了茶树的遗传多样性及其驯化状态。其结果为茶树的遗传进化和精准设计育种提供了有益见解以及重要参考资料。展开更多
Background Cotton crop is infested by numerous arthropod pests from sowing to harvesting,causing substantial direct and indirect yield losses.Knowledge of seasonal population trends and the relative occurrence of pest...Background Cotton crop is infested by numerous arthropod pests from sowing to harvesting,causing substantial direct and indirect yield losses.Knowledge of seasonal population trends and the relative occurrence of pests and their natural enemies is required to minimize the pest population and yield losses.In the current study,analysis of the seasonal population trend of pests and natural enemies and their relative occurrence on cultivars of three cotton species in Central India has been carried out.Results A higher number and diversity of sucking pests were observed during the vegetative cotton growth stage(60 days after sowing),declining as the crop matured.With the exception of cotton jassid(Amrasca biguttula biguttula Ishida),which caused significant crop damage mainly from August to September;populations of other sucking insects seldom reached economic threshold levels(ETL)throughout the studied period.The bollworm complex populations were minimal,except for the pink bollworm(Pectinophora gossypiella Saunders),which re-emerged as a menace to cotton crops during the cotton cropping season 2017–2018 due to resistance development against Bt-cotton.A reasonably good number of predatory arthropods,including coccinellids,lacewings,and spiders,were found actively preying on the arthropod pest complex of the cotton crop during the early vegetative growth stage.Linear regression indicates a significant relationship between green boll infestations and pink bollworm moths in pheromone traps.Multiple linear regression analyse showed mean weekly weather at one-or two-week lag periods had a significant impact on sucking pest population(cotton aphid,cotton jassid,cotton whitefly,and onion thrips)fluctuation.Gossypium hirsutum cultivars RCH 2 and DCH 32,and G.barbadense cultivar Suvin were found susceptible to cotton jassid and onion thrips.Phule Dhanvantary,an G.arboreum cotton cultivar,demonstrated the highest tolerance among all evaluated cultivars against all sucking pests.Conclusion These findings have important implications for pest management in cotton crops.Susceptible cultivars warrant more attention for plant protection measures,making them more input-intensive.The choice of appropriate cultivars can help minimize input costs,thereby increasing net returns for cotton farmers.展开更多
[目的/意义]Cell、Nature和Science是目前公认的世界顶级期刊,在Cell、Nature和Science上发文,一定程度上意味着对学者科研成果的高度肯定。[方法 /过程]利用文献计量方法对Web of Science数据库中收录的Nature、Science和Cell杂志2000-...[目的/意义]Cell、Nature和Science是目前公认的世界顶级期刊,在Cell、Nature和Science上发文,一定程度上意味着对学者科研成果的高度肯定。[方法 /过程]利用文献计量方法对Web of Science数据库中收录的Nature、Science和Cell杂志2000-2015年发表的中国学者的论文进行研究,从发文量、核心作者、发文机构、文献被引情况以及研究主题进行了全面分析。[结果 /结论]随着时间段的推移,中国学者在Cell、Nature和Science上发文的作者从徐星教授为代表的作者群演变为以王俊为代表的作者群;研究热点逐渐从古生物学研究转变为生命科学研究,生命科学研究已成为目前的研究热点;研究机构从中科院古脊椎动物与古人类研究所为代表的机构群逐渐转变为以深圳华大基因研究院为代表的机构群。展开更多
文摘2025年3月17日,国际顶级学术期刊《自然·遗传学》(Nature Genetics)刊发题为“Genomic analysis of 1325 Camellia accessions sheds light on agronomic and metabolic traits for tea plant improvement”的研究性论文。该研究由福建省农业科学院茶叶研究所与中国农业科学院农业基因组研究所等多家单位合作完成。本研究通过对茶树及其近缘种的基因组进行深度重测序,构建了全面的茶树基因组遗传变异图谱,进而揭示了茶树的遗传多样性及其驯化状态。其结果为茶树的遗传进化和精准设计育种提供了有益见解以及重要参考资料。
基金Funding support for the Crop Pest Surveillance and Advisory Project(CROPSAP)。
文摘Background Cotton crop is infested by numerous arthropod pests from sowing to harvesting,causing substantial direct and indirect yield losses.Knowledge of seasonal population trends and the relative occurrence of pests and their natural enemies is required to minimize the pest population and yield losses.In the current study,analysis of the seasonal population trend of pests and natural enemies and their relative occurrence on cultivars of three cotton species in Central India has been carried out.Results A higher number and diversity of sucking pests were observed during the vegetative cotton growth stage(60 days after sowing),declining as the crop matured.With the exception of cotton jassid(Amrasca biguttula biguttula Ishida),which caused significant crop damage mainly from August to September;populations of other sucking insects seldom reached economic threshold levels(ETL)throughout the studied period.The bollworm complex populations were minimal,except for the pink bollworm(Pectinophora gossypiella Saunders),which re-emerged as a menace to cotton crops during the cotton cropping season 2017–2018 due to resistance development against Bt-cotton.A reasonably good number of predatory arthropods,including coccinellids,lacewings,and spiders,were found actively preying on the arthropod pest complex of the cotton crop during the early vegetative growth stage.Linear regression indicates a significant relationship between green boll infestations and pink bollworm moths in pheromone traps.Multiple linear regression analyse showed mean weekly weather at one-or two-week lag periods had a significant impact on sucking pest population(cotton aphid,cotton jassid,cotton whitefly,and onion thrips)fluctuation.Gossypium hirsutum cultivars RCH 2 and DCH 32,and G.barbadense cultivar Suvin were found susceptible to cotton jassid and onion thrips.Phule Dhanvantary,an G.arboreum cotton cultivar,demonstrated the highest tolerance among all evaluated cultivars against all sucking pests.Conclusion These findings have important implications for pest management in cotton crops.Susceptible cultivars warrant more attention for plant protection measures,making them more input-intensive.The choice of appropriate cultivars can help minimize input costs,thereby increasing net returns for cotton farmers.
文摘[目的/意义]Cell、Nature和Science是目前公认的世界顶级期刊,在Cell、Nature和Science上发文,一定程度上意味着对学者科研成果的高度肯定。[方法 /过程]利用文献计量方法对Web of Science数据库中收录的Nature、Science和Cell杂志2000-2015年发表的中国学者的论文进行研究,从发文量、核心作者、发文机构、文献被引情况以及研究主题进行了全面分析。[结果 /结论]随着时间段的推移,中国学者在Cell、Nature和Science上发文的作者从徐星教授为代表的作者群演变为以王俊为代表的作者群;研究热点逐渐从古生物学研究转变为生命科学研究,生命科学研究已成为目前的研究热点;研究机构从中科院古脊椎动物与古人类研究所为代表的机构群逐渐转变为以深圳华大基因研究院为代表的机构群。
