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Changes in Leaf Stomatal Properties in Rice with the Growing Season

Phyton-International Journal of Experimental Botany 2024年第4期93卷 807-817页

作者： jiana chen Fangbo Cao Min Huang Rice and Product Ecophysiology Key Laboratory of Ministry of Education for Crop Physiology and Molecular BiologyHunan Agricultural UniversityChangsha410128China National Engineering Research Center of Rice Hunan Agricultural UniversityChangsha410128China

Transplanting rice varieties grown in different seasons can lead to different yields due to different dry matterproduction. Early-season rice varieties transplanted in the late season can obtain high yields with short-growthduration and higher yields driven by higher dry matter production. To make clear the variations in dry matterproduction across seasons, four early-season rice varieties were chosen for late-season transplantation. The grainyield, dry matter accumulation, leaf photosynthetic, and leaf stomatal properties were studied. It was observedthat the average yields of these four varieties in the late season were 33% greater, despite a reduced growth periodof 13 days in comparison with the early season. Furthermore, there was a notable increase in both total and postheadingdry matter production during the late season. The leaf net photosynthetic rate, stomatal area, stomatalwidth, and stomatal length were higher in the late season. Despite no significant difference in stomatal densitybetween seasons, strong positive linear relationships were observed between net photosynthetic rate and stomatalconductance, and between stomatal conductance and area. These relationships demonstrate that the increase ofthe stomatal width and length of the leaves in the late season leads to an increase in the stomatal area, therebyincreasing the stomatal conductance and enhancing the photosynthesis of the leaves. Consequently, this leads togreater dry matter production and a higher yield compared to the early season. Therefore, when breeding newhigh-yielding and short-growing varieties, the large stomatal area can be used as a reference index.

关键词： Photosynthesis rice stomatal properties season yield

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基于CiteSpace的图书馆评估研究可视化分析

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江苏科技信息 2024年第7期41卷 57-60页

作者：陈嘉娜湘潭大学湖南湘潭411100

为了深度剖析国内近10年图书馆评估的研究现状和前沿趋势,了解国内相关研究的发展阶段和特点,文章通过文献计量工具CiteSpace对中国知网中2012—2022年的图书馆评估相关文献进行作者、机构、关键词3方面的可视化计量分析,梳理了我国对... 详细信息

为了深度剖析国内近10年图书馆评估的研究现状和前沿趋势,了解国内相关研究的发展阶段和特点,文章通过文献计量工具CiteSpace对中国知网中2012—2022年的图书馆评估相关文献进行作者、机构、关键词3方面的可视化计量分析,梳理了我国对该主题的研究概况、研究热点和发展趋势,并提出了对未来研究的展望:增强对阅读推广的实证研究、进一步对成效评估进行深入研究、加强对图书馆空间评估的研究。

关键词：图书馆评价文献计量 CiteSpace 可视化分析

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纳入血清铁蛋白的列线图预测糖尿病视网膜病变发生

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国际眼科杂志 2024年第5期24卷 671-676页

作者：吴晓玉谢丹丹陈佳娜倪连红李维娜联勤保障部队第910医院眼科福建省泉州市362000

目的:建立纳入血清铁蛋白的列线图模型预测糖尿病视网膜病变的发生,并评估该模型。方法:通过单因素和多因素回归分析,筛选出包括铁蛋白在内的21个变量,确定了糖尿病视网膜病变的危险因素。建立列线图预测模型进行评估和校准。结果:列线... 详细信息

目的:建立纳入血清铁蛋白的列线图模型预测糖尿病视网膜病变的发生,并评估该模型。方法:通过单因素和多因素回归分析,筛选出包括铁蛋白在内的21个变量,确定了糖尿病视网膜病变的危险因素。建立列线图预测模型进行评估和校准。结果:列线图模型纳入了铁蛋白、糖尿病病程、血红蛋白、尿微量白蛋白、用药规律性以及体重指数等6个变量。纳入血清铁蛋白的预测模型一致性指数为0.813(95%CI:0.748-0.879)。内外部验证的校准曲线表现良好,决策曲线提示阈值概率范围在10%-90%之间,该模型具有较高的净收益值。结论:血清铁蛋白是糖尿病视网膜病变发生的重要危险因素。一种新的列线图模型,包括体重指数、糖尿病病程、铁蛋白、血红蛋白、尿微量白蛋白、用药规律性,具有较高的预测准确性,可为临床医生提供早期预判。

关键词：血清铁蛋白糖尿病视网膜病变列线图预测

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Estimating Carbon Capture Potential of Fallow Weeds in Rice Cropping Systems

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Phyton-International Journal of Experimental Botany 2023年第1期92卷 71-77页

作者： Ge chen Yuling Kang Fangbo Cao jiana chen Min Huang Rice and Product Ecophysiology Key Laboratory of Ministry of Education for Crop Physiology and Molecular BiologyHunan Agricultural UniversityChangsha410125China Institute of Agroecology and Environment Yueyang Academy of Agricultural SciencesYueyang414022China

Weeds occurred during the fallow season can well perform the function of carbon(C)capture due to receiving little human *** study aimed to evaluate the C capture potential of fallow weeds in rice(Oryza sativa L.)cropping systems.A six-region,two-year on-farm investigation and a three-year tillage experiment were conducted to estimate C capture in fallow weeds in rice cropping *** on-farm investigation showed that the average mean C capture by fallow weeds across six regions and two years reached 112 g m^(-2).The tillage experiment indicated that no-tillage practices increased C capture by fallow weeds by 80%on average as compared with conventional *** results of this study not only contribute to an understanding of C capture potential of fallow weeds in rice cropping systems,but also provide a reference for including fallow weeds in the estimation of vegetative C sink.

关键词： Carbon cycling fallow weeds no-tillage rice cropping system vegetative carbon sink

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8-0聚丙烯缝线巩膜双联结缝合固定人工晶状体悬吊术在无晶状体眼中的应用

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国际眼科杂志 2024年第3期24卷 469-472页

作者：杜亚茹陈佳娜李维娜联勤保障部队第九一○医院眼科中国福建省泉州市362000

目的:观察8-0聚丙烯缝线巩膜双联结缝合固定人工晶状体悬吊术在无晶状体眼中的临床效果。方法:回顾性病例研究。收集2021-01/2022-11于我院行人工晶状体悬吊术的无晶状体患者30例31眼(其中男22例22眼)的临床资料,术中均采用8-0聚丙烯缝... 详细信息

目的:观察8-0聚丙烯缝线巩膜双联结缝合固定人工晶状体悬吊术在无晶状体眼中的临床效果。方法:回顾性病例研究。收集2021-01/2022-11于我院行人工晶状体悬吊术的无晶状体患者30例31眼(其中男22例22眼)的临床资料,术中均采用8-0聚丙烯缝线巩膜双联结缝合法固定人工晶状体(AcrySof IQ或Tecnis ZCB00),术后至少随访6 mo,观察所有患者视力、眼压、术后人工晶状体位置和术中术后并发症发生情况。结果:术前术眼裸眼视力(UCVA,LogMAR)和最佳矫正视力(BCVA,LogMAR)分别为2.53±0.78和0.35±0.26,术后6 mo分别为0.58±0.26和0.36±0.27,手术前后UCVA比较有差异(t=15.408,P<0.01),BCVA比较无差异(t=-1.677,P=0.104)。术中未出现并发症。术后所有人工晶状体位置均居中,出现人工晶状体倾斜3眼,术后发生高眼压2眼、角膜水肿5眼、缝线外露1眼。术后未出现前房积血、玻璃体积血、黄斑水肿、角膜内皮失代偿、低眼压、脉络膜脱离、视网膜脱离、爆发性脉络膜上腔出血、眼内炎等并发症。结论:8-0聚丙烯缝线巩膜双联结缝合固定人工晶状体悬吊术早期可提高无晶状体患者的术后视力、并发症较少,可作为治疗无晶状体、晶状体脱位、悬韧带异常患者的一种手术方式选择。

关键词： 8-0聚丙烯缝线人工晶状体悬吊术无晶状体

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Contrasting Characteristics of Lodging Resistance in Two Super-Rice Hybrids Differing in Harvest Index

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Phyton-International Journal of Experimental Botany 2022年第2期91卷 429-437页

作者： Zui Tao Tao Lei Fangbo Cao jiana chen Xiaohong Yin Tianfeng Liang Min Huang Crop and Environment Research Center College of AgronomyHunan Agricultural UniversityChangsha410128China Guangxi Key Laboratory of Rice Genetics and Breeding Rice Research InstituteGuangxi Academy of Agricultural SciencesNanning530007China

The“super rice”breeding program in China has been successful in developing high-yielding hybrids,including few with high harvest index ***,there is limited information on the relationship between lodging resistance and harvest index,and the mechanisms underlying the relationship in super-rice *** this study,a two-year field experiment was conducted to compare lodging resistance and its related traits between two superrice hybrids differing in harvest index,i.e.,Guiliangyou 2(G2)with a high harvest index and Y-liangyou 1(Y1)with a typical harvest index of modern high-yielding rice *** showed that compared to Y1,G2 was lower in plant height due to its lower aboveground N uptake,and its higher stem breaking resistance(i.e.,lower stem breaking index)resulted from a lower stem height at its center of ***,G2 had a higher lodging resistance(i.e.,lower plant lodging index)than *** study suggests that developing super-rice hybrids with high harvest index values is a possible way to achieve both high grain yield and strong lodging resistance in rice.

关键词： Harvest index nitrogen uptake plant height lodging resistance stem breaking resistance super-rice hybrid

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双季稻机械化高产高效生产技术模式及应用效果

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作物研究 2024年第2期38卷 149-152页

作者：周昕陈细兵曾文进黄颖洪彭雨陈佳娜湖南省农机事务中心湖南长沙410005 岳阳市农业农村事务中心湖南岳阳414599 湖南农业大学农学院湖南长沙410128

为推进双季稻机械化生产,促进单产提高,集成了“机械整地、机械施肥、机械撒施石灰、机械播种育秧、机械插秧、机械开丰产沟、机械植保、机械粉碎秸秆还田、机械深翻越冬、机械开沟、机播绿肥”等农机农艺融合的双季稻机械化高产高效生... 详细信息

为推进双季稻机械化生产,促进单产提高,集成了“机械整地、机械施肥、机械撒施石灰、机械播种育秧、机械插秧、机械开丰产沟、机械植保、机械粉碎秸秆还田、机械深翻越冬、机械开沟、机播绿肥”等农机农艺融合的双季稻机械化高产高效生产技术模式,并于2022年在汨罗市对该模式进行17 hm^(2)的示范应用。结果显示,在双季稻机械化高产高效生产技术模式下,双季稻周年产量增加了2.19 t/hm^(2)、纯效益增加了4782元/hm^(2),双季稻产量和经济效益显著提升。

关键词：双季稻全程机械化技术模式高产高效农机农艺融合

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Increasing grain weight and yield stability by increasing pre-heading non-structural carbohydrate reserves per spikelet in short-growth duration rice

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The Crop Journal 2023年第6期11卷 1912-1920页

作者： Xing Li Ruichun Zhang Ge chen Jiaxin Xie Zhengwu Xiao Fangbo Cao Izhar Ali Anas Iqbal Abdul Wahab Min Huang jiana chen Rice and Product Ecophysiology Key Laboratory of Ministry of Education for Crop Physiology and Molecular BiologyHunan Agricultural UniversityChangsha 410128HunanChina Hengyang Academy of Agricultural Sciences Hengyang 421101HunanChina Yueyang Academy of Agricultural Sciences Yueyang 414022HunanChina College of Agriculture Guangxi UniversityNanning 530004GuangxiChina State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources College of AgricultureSouth China Agricultural UniversityGuangzhou 510642GuangdongChina Shanghai Center for Plant Stress Biology CAS Center for Excellence in Molecular Plant SciencesChinese Academy of SciencesShanghai 200032China

Rice yield stability is a breeding goal,particularly for short-growth duration rice,but its underlying mechanisms remain *** an attempt to identify the relationship between yield stability and source–sink characteristics in short-growth duration rice,a field experiment was conducted at three sites(Yueyang,Liuyang,and Hengyang)in 2021 and *** study compared yield,yield components,source–sink characteristics,and their stability between two stable-yielding short-growth duration rice cultivars,Zhongzao 39(Z-39)and Lingliangyou 268(L-268),and two unstable-yielding short-growth duration rice cultivars,Zhongjiazao 17(Z-17)and Zhuliangyou 819(Z-819).The stability of agronomic parameters was represented by the coefficient of variation(CV).The respective CVs of yield in Z-17,Z-819,Z-39,and L-268 were 10.2%,10.1%,4.5%,and 5.7%in 2021 and 19.7%,15.0%,5.4%,and 6.5%in *** respective CVs of grain weight were 6.3%,5.7%,3.4%,and 4.5%in Z-17,Z-819,Z-39,and L-268 in 2021,and 8.1%,6.3%,1.5%,and 0.8%in *** mean source capacity per spikelet and pre-heading non-structural carbohydrate reserves per spikelet(NSC_(pre))were 7%–43%and7%–72%lower in Z-819 and Z-17than in L-268 and Z-39 in 2021 and *** mean quantum yield of photosystem II photochemistry of leaf,leaf area index,and specific leaf weight of L-268 and Z-39 were higher than those of Z-819 and Z-17 at the heading *** study suggests that high NSC_(pre),caused by great leaf traits before heading,increases source capacity per spikelet and its stability,thereby increasing the stability of grain weight and *** NSC_(pre)is critical for achieving grain weight and yield stability in short-growth duration rice.

关键词： Non-structural carbohydrate Short-growth duration rice Source-sink characteristics Yield stability

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Total suprarenal aortic occlusion with cardiac disease: a case series of three cases

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World Journal of Emergency Medicine 2024年第1期15卷 59-61页

作者： Yuanli Lei Jiaozhen chen Qin chen jiana Yin Weijia Huang Wenxing Song Shouquan chen Department of Emergency Medicine the First Affi liated Hospital of Wenzhou Medical UniversityWenzhou 325000China Department of Electrocardiogram Wenzhou People's HospitalWenzhou 325000China

Acute aortic occlusion(AAO)has been very rarely reported in the literature and is a potentially life-threatening emergency.[1-5]AAO mostly occurs in cardiac disease patients,[1-4,6,7]and leads to cardiac complications.[1,2,5,6]Suprarenal aortic occlusion(SAO)is a very rare type of AAO,and infrarenal aortic occlusion(IAO)accounts for 75.8%-97.8%.[1,3,5-7]SAO is different from IAO in some clinical manifestations,treatment strategies,and prognoses.[3,6-8]SAO with cardiac disease will make the condition more complex and could easily cause a delay in diagnosis and portend worse outcomes with amputation and mortality rates.[1,3,6]Early and fast diagnosis and positive revascularization treatment are necessary to prevent cases from becoming fatal.[1-3]Herein,we present a case series of SAO with cardiac disease.

关键词： cardiac occlusion diagnosis

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米粉质构特性与稻米理化性状的关系

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中国水稻科学 2024年第3期38卷 316-323页

作者：肖正午方升亮曹威胡丽琴黎星解嘉鑫廖成静康玉灵胡玉萍张珂骞曹放波陈佳娜黄敏湖南农业大学作物生理与分子生物学教育部重点实验室长沙410128 衡阳市农业科学院湖南衡阳421101 浏阳市永安镇农业农村综合服务中心湖南浏阳410323

【目的】探明决定米粉稻品种米粉质构特性的关键稻米理化性状指标,为优质米粉专用稻品种的选育提供理论依据。【方法】以5个米粉稻品种(广陆矮4号、中嘉早17、湘早籼24号、中早39、株两优729)为材料,于2020-2022年早季和晚季在湖南浏阳... 详细信息

【目的】探明决定米粉稻品种米粉质构特性的关键稻米理化性状指标,为优质米粉专用稻品种的选育提供理论依据。【方法】以5个米粉稻品种(广陆矮4号、中嘉早17、湘早籼24号、中早39、株两优729)为材料,于2020-2022年早季和晚季在湖南浏阳进行大田试验。【结果】米粉稻在不同年份和季节种植,加工出的米粉质构特性差异均达显著水平(P<0.01)。米粉硬度、弹性、咀嚼性、内聚性和回复性变化范围分别为1651~4083 g、0.860~0.922、1295~2685 g、0.760~0.858、0.532~0.633。相关分析表明,米粉硬度和咀嚼性与稻米理化性状相关不显著。米粉弹性与总淀粉和直链淀粉含量呈显著正相关(P<0.01),与消减值呈显著负相关(P<0.05)。【结论】米粉稻存在适宜种植的气候条件。总淀粉、直链淀粉含量和消减值是决定米粉稻品种米粉质构特性的关键指标。总淀粉和直链淀粉含量高,消减值低的米粉稻品种加工出的米粉弹性好。

关键词：米粉稻米粉品质质构特性直链淀粉含量 RVA谱

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