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Ploidy and fruit trait variation in oil-tea Camellia:Implications for ploidy breeding

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Journal of Integrative Agriculture 2024年第8期23卷 2662-2673页

作者： Yanmin Li Liangjing Yin xianyu He Cenlong Hu Ronghua Wu Qian Long Shixin Xiao Deyi Yuan Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees of Ministry of Education/Key Laboratory of Non-Wood Forest Products of State Forestry Administration Central South University of Forestry and TechnologyChangsha 410004China Qiandongnan Institute of Forestry Qiandongnan Miao and Dong Autonomous Prefecture 556000China Dongfeng Forest Farm of Liping County Qiandongnan Miao and Dong Autonomous Prefecture 557300China

Plant polyploidy often occurs in conjunction with higher yield and superior ***,obtaining polyploid germplasms is a significant part of *** oil-tea Camellia tree is an important native woody plant that produces high-quality edible oil and includes many species of Camellia with different ***,whether higher ploidy levels in oil-tea Camellia trees are related to better traits remains *** this study,the ploidy levels of 30 different oil-tea Camellia strains in three different species in the *** were determined by flow cytometry and chromosome preparation,and the phenotypic characteristics and fatty acid compositions of the fruits were examined by field observations and laboratory *** correlations between the ploidy level of oil-tea Camellia and the main traits of the fruit were *** results showed that 10 Camellia lanceoleosa strains were diploid,10 Camellia meiocarpa strains were tetraploid and 10 Camellia oleifera strains were *** *** had larger fruit size and weight,more seeds per fruit,greater seed weight per fruit,higher oil content and greater yield per crown width than tetraploid *** and diploid ***,but their fruit peel thickness and fresh seed rate were significantly lower,and these traits were significantly correlated with ploidy *** addition,in terms of fatty acid composition,hexaploid *** had a higher oleic acid content than tetraploid *** and diploid ***,but their linoleic acid,linolenic acid and arachidonic acid contents were *** contents of palmitic acid,stearic acid and total unsaturated fatty acids were not significantly correlated with ploidy *** conclusion,certain correlations exist between the main characteristics of oil-tea Camellia fruit and the ploidy level,and increasing the ploidy level led to an increase in fruit yield with no effect on oil *** discovery of variations in the m

关键词： oil-tea Camellia ploidy level fruit traits correlation polyploidization

College English Teaching Based on the Theory of Core Competencies

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Cultural and Religious Studies 2024年第5期12卷 309-313页

作者： xianyu Jing Beijing Union University BeijingChina

The core competencies of college students can influence their further learning,employment,and personal *** paper explores college English teaching from the three aspects of core competencies:cultural foundation,self-development,and social *** to the challenges posed by the new era for the cultivation of foreign language talents,the paper aims to improve students’cultural literacy,independent learning,the ability of problem discovery and problem solving,and critical cultural thinking,so as to make them more competitive in employment and entrepreneurship.

关键词： core competency cultural literacy self-development social participation

Dabie Mountains Spirit——Cultural Assets of CPC

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China News Release 2024年第4期 58-61页

作者： Sun Wei Zhang xianyu 不详

In September 2019,during President Xi Jinping’s inspection of Henan Province in central China,he remarked that"the Jiao Yulu spirit,the Red Flag Canal spirit,and the Dabie Mountains spirit are all valuable cultural wealth of the Communist Party of China(CPC)."This underscores the crucial position of the Dabie Mountains spirit in the revolutionary legacy of the CPC.

关键词： CPC spirit Mountains

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中国式现代化水平统计评价与时空收敛性分析

统计与决策 2024年第13期40卷 85-90页

作者：曹献雨西安财经大学经济学院西安710119

文章首先构建了中国式现代化指标体系,然后运用熵值法对2013—2021年中国式现代化水平进行测度,最后通过变异系数衡量中国式现代化的σ收敛性,并通过空间计量模型检验中国式现代化是否具有绝对β收敛和条件β收敛,从而进行中国式现代化... 详细信息

文章首先构建了中国式现代化指标体系,然后运用熵值法对2013—2021年中国式现代化水平进行测度,最后通过变异系数衡量中国式现代化的σ收敛性,并通过空间计量模型检验中国式现代化是否具有绝对β收敛和条件β收敛,从而进行中国式现代化时空收敛性分析。研究结果显示:在省域层面,各省份中国式现代化水平不断上升,北京、上海、广东、江苏、浙江、天津和福建7个省份的中国式现代化水平较高。在区域层面,东部地区的中国式现代化水平高于东北、中部和西部地区;南方地区的中国式现代化水平高于北方地区;粤港澳的中国式现代化水平高于长三角、京津冀、长江经济带和黄河流域。在分项指标层面,人口发展、共享富裕和绿色发展维度有优势,物质富裕、精神文明和开放包容维度是短板。在时空收敛方面,省域中国式现代化存在σ收敛、空间绝对β收敛和空间条件β收敛特征。

关键词：中国式现代化熵值法时空收敛

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Development of a rapid and efficient system for CR genes identification based on hairy root transformation in Brassicaceae

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Horticultural Plant Journal 2024年第4期10卷 1049-1060页

作者： Wenlin Yu Lu Yang Yuanyuan Xiang Rongde Li Xueqing Zhou Longcai Gan xianyu Xiang Yunyun Zhang Lei Yuan Yanqing Luo Genze Li Youning Wang Yinhua Chen Peng Chen Chunyu Zhang National Key Laboratory of Crop Genetic Improvement and College of Plant Science and Technology Huazhong Agricultural UniversityWuhanHubei 430070China National Key Laboratory for Tropical Crop Breeding Sanya Nanfan Research InstituteHainan UniversitySanyaHainan 572025China National Agro-Tech Extension and Service Center Beijing 100125China Industrial Crops Research Institute Yunnan Academy of Agricultural SciencesKunmingYunnan 650221China College ofAgronomy NorthwestA&F UniversityYanglingShaanxi712100China

Many economically important crops and vegetables belonging to the cruciferous family are heavily endangered by clubroot disease caused by Plasmodiophora brassicae *** of clubroot resistant cultivars based on mapping and cloning of resistant genes is commonly regarded as the most cost-effective and efficient way to fight against this *** traditional way of R gene functional validation requires stable transformation that is both time-and *** this study,a rapid and efficient hairy-root transgenic protocol mediated by Agrobacterium rhizogenes was *** transformation positive rate was over 80%in Brassica napus showed by GUS reporter gene and this transformation only took 1/6 of the time compared with stable *** system was applicable to different *** varieties and other cruciferous crops including Brassica rapa and Brassica *** particular,two known CR genes,CRA3.7.1 and CRA8.2.4 were used respectively,as example to show that the system works well for CR gene study combined with subsequent *** infection in *** importantly,it works both in over-expression that led to disease resistance,as well as in RNAi which led to disease susceptible ***,this system can be used in batch-wise identification of CR genes,and also offered the possibility of manipulating key genes within the *** genome that could improve our knowledge on host-pathogen interaction.

关键词： Brassicaceae Agrobacterium rhizogenes Hairy root transformation Clubroot Gene function

风险社会理论下人工智能时代的失业风险与法律治理

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郑州大学学报（哲学社会科学版） 2024年第4期57卷 56-63页

作者：孟现玉上海政法学院上海司法研究所上海201701

作为第四次工业革命的核心,人工智能的蓬勃发展除了驱动生产力成长外,还对劳动力市场、劳动者就业形成挑战。目前就人工智能能否以及将在多大程度上影响劳动力市场形成了“替代理论”与“补偿理论”的二分法图景。整体而言,人工智能所... 详细信息

作为第四次工业革命的核心,人工智能的蓬勃发展除了驱动生产力成长外,还对劳动力市场、劳动者就业形成挑战。目前就人工智能能否以及将在多大程度上影响劳动力市场形成了“替代理论”与“补偿理论”的二分法图景。整体而言,人工智能所带来的替代效应较之补偿效应将更为明显。在风险社会中,科技发展所带来的劳动力市场风险具有非线性的变化发展与不断变动性,其对公民的社会经济权利有所侵害,需要公权力采取措施予以化解。从关注“不平等”转向“不安全”,社会政策也需从消极防御到积极应对。以此检视与省思我国现有的法律规制,存在着一定的实践挑战,包括失业保障制度差序治理之局限性、劳动保护规制之限制和职业培训成效之不彰。为了应对这些问题,我们需要转向积极促进的治理理念、以劳动市场风险与保障需求性为核心扩张失业保障资源供给并补足失业待遇社会给付竞合规则、完善劳动保护规制和提升职业培训成效。

关键词：风险社会人工智能劳动力市场失业治理

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积极老龄化视域下促进老年人就业的法治路径

交大法学 2024年第2期 117-131页

作者：孟现玉上海政法学院上海司法研究所

老龄化浪潮冲击着我国劳动市场、经济发展,也对社会安全制度的永续性构成威胁。除却推迟退休年龄、改革养老金制度及建构养老服务体系外,还应关注老年人的就业问题。作为回应人口结构老化的重要国际策略,将促进老年人就业的相关措施嵌... 详细信息

老龄化浪潮冲击着我国劳动市场、经济发展,也对社会安全制度的永续性构成威胁。除却推迟退休年龄、改革养老金制度及建构养老服务体系外,还应关注老年人的就业问题。作为回应人口结构老化的重要国际策略,将促进老年人就业的相关措施嵌入积极老龄化理论,透过健康、参与和安全维度的检视分析,可以为我国未来老年人就业促进法制的改革与发展提供重要参考与借鉴。具体而言,应形塑契合老年人身心健康的职业安全卫生制度,实行老年人特殊劳动保护和建立职务再设计制度;应强化老年人就业激励制度,有条件地适用强制退休、优化公共就业服务和职业培训制度;应完善老年人平等就业法律制度,禁止就业年龄歧视并明确就业老年人的劳动者地位。

关键词：积极老龄化老年人健康就业就业激励平等就业

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无人机通信中的资源分配及部署位置联合优化

西南交通大学学报 2024年第4期59卷 917-924页

作者：张先玉陈勇张余杨华国防科技大学第六十三研究所江苏南京210003 解放军75841部队湖南长沙410000 陆军工程大学通信工程学院江苏南京210003 军事科学院战争研究院北京100091

为提升基于正交频分多址接入模式无人机辅助无线通信系统的网络性能,首先,以提升用户的公平性为系统方案设计指标,将包括子信道分配、调制模式选择、功率分配等通信资源和无人机位置联合建模为一个混合整数非线性优化问题;进一步,利用... 详细信息

为提升基于正交频分多址接入模式无人机辅助无线通信系统的网络性能,首先,以提升用户的公平性为系统方案设计指标,将包括子信道分配、调制模式选择、功率分配等通信资源和无人机位置联合建模为一个混合整数非线性优化问题;进一步,利用迭代优化的方式解决变量耦合性及非凸性等问题,将最大-最小问题转换为两个子问题:子信道分配和调制方式选择联合优化、无人机位置和子信道功率联合优化;然后,通过适当变换将子信道分配和调制方式选择联合优化建模为0-1线性优化问题进行求解,而无人机位置和子信道功率联合优化建模为凸优化问题求解;最后,进行实验仿真验证.研究结果表明,所提联合优化算法相比基本方案可有效提升网络用户的公平性.

关键词：无人机正交频分多址子信道分配功率控制调制模式混合整数非线性规划

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放射性龋的发病机制及诊疗要点

中华口腔医学杂志 2024年第1期59卷 30-36页

作者：李贤玉陈文霞广西医科大学口腔医学院·附属口腔医院牙体牙髓科、广西壮族自治区卫生健康委员会口腔感染性疾病防治重点实验室南宁530021

放射性龋是头颈部肿瘤放疗后的常见并发症,是放疗后发生的一种快速进展性牙体硬组织疾病,严重影响放疗后患者的生活质量。本文阐述了放射性龋的致病机制、诊断及龋坏评价、治疗以及预防策略的研究进展,以期为放射性龋的临床防治提供参考。

关键词：龋齿放射性龋放射治疗诊断修复材料预防