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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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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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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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Effects of single basal application of coated compound fertilizer on yield and nitrogen use efficiency in double-cropped rice

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The Crop Journal 2017年第3期5卷 265-270页

作者： jiana chen Fangbo Cao Hairong Xiong Min Huang Yingbin Zou Yuanfu Xiong College of Agronomy Hunan Agricultural UniversityChangsha 410128China Center of Analysis and Testing Hunan Agricultural UniversityChangsha 410128China College of Science Hunan Agricultural UniversityChangsha 410128China

Fertilizer plays an important role in increasing rice yield. More than half of all fertilizer applied to the field is not taken up, resulting in environmental damage and substantial economic losses. To address these concerns, a low-cost, coated compound fertilizer named "Xiang Nong Da"(XND), requiring only a single basal application, was studied. A two-year field experiment was conducted to test the effects of XND application on rice yield and nitrogen fertilizer use efficiency. An ordinary uncoated compound fertilizer(UNCF), with 20% more nutrients and split application was selected as the control. The yield of XND-treated rice was only 3.1% lower than that of the control, an insignificant difference. There were no significant differences between N use efficiency indices of the two fertilizer treatments except for N partial factor productivity(PFP_N). PFP_Nof XND treatment was 19.7%–23.2% higher than the control, a significant difference. This result indicates that a 20% decrease in N application rate is possible with XND without yield reduction and with savings in both labor and time.

关键词： Rice Yield Fertilizer Nitrogen use efficiency

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Biochar Application Enhanced Post-Heading Radiation Use Efficiency in Field-Grown Rice (Oryza sativa L.)

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Phyton-International Journal of Experimental Botany 2020年第2期89卷 415-422页

作者： Xiaohong Yin Zui Tao jiana chen Fangbo Cao Min Huang Yingbin Zou Crop and Environment Research Center College of AgronomyHunan Agricultural UniversityChangsha410128China

It has been shown that adding biochar to soil can improve nitrogen(N)uptake and utilization in rice(Oryza sativa L.).However,there is a lack of research on the physiological alterations of rice as a result of the changes in nitrogen uptake due to the addition of *** study conducted field experiments in 2015 and 2016 with the goal of testing the hypothesis that the application of biochar would enhance radiation use efficiency(RUE)of rice by improving the plant’s ability to take in and utilize *** results demonstrated that the application of biochar(20 t ha−1)induced no significant effects on pre-heading specific leaf weight(SLW),nitrogen uptake(NUpre),and leaf area index(LAI)at heading,the ratios of LAI/NUpre and SLW/Nupre,or pre-heading ***-ever,biochar application significantly increased post-heading nitrogen uptake(NUpost),ratios of NUpost/SLWand NUpost/LAI,and post-heading *** results indicate that the application of biochar can improve the plant’s nitrogen uptake and RUE in field-grown rice during the post-heading period,which confirms our hypothesis.

关键词： Biochar nitrogen uptake radiation use efficiency rice

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Amylose Content and Starch Granule Size in Rice Grains are Affected By Growing Season

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Phyton-International Journal of Experimental Botany 2019年第4期88卷 403-412页

作者： Hengdong Zhang Min Huang Yingjuan Wei jiana chen ShuanglüShan Fangbo Cao Guanghui chen Yingbin Zou Crop and Environment Research Center for Human Health College of AgronomyHunan Agricultural UniversityChangsha410128China Hunan Agricultural Product Processing Institute Changsha410125China

Amylose content and starch granule size in grains influence rice quality,which differs between the early(ES)and late season(LS).The objective of this study was to determine the variation of amylose content and starch granule size between seasons and find the main reasons(e.g.,temperature and solar radiation)for the observed *** experiments with six rice varieties(three high and three low amylose content rice)planted in the ES and LS were conducted in 2016 and 2017,*** mean temperatures during the filling stage were higher in ES,however,the daily temperatures at 7-10 days after flowering(DAF)in 2016,and at 5-10,13-14 DAF in 2017 were higher in *** results showed that amylose content in LS was lower than in ES with high amylose content rice varieties(HACV);the opposite trend occurred with low amylose content rice varieties(LACV).The mean starch granule diameter was higher in LS than ES in 2016,but the opposite result occurred in 2017 with all *** results suggest that higher temperatures increased and decreased the amylose content in HACV and LACV,*** at 5-15 DAF were important for the formation of starch granules:lower temperatures during 10-14 DAF increased the proportion of larger starch granules(d>6.21μm,some with d>13.3μm),and higher temperatures at 5-6 DAF increased the proportion of starch granules with diameter 4.24-6.21μm.

关键词： Amylose content growing season rice variety starch granule

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Performance of Soft Rice (Oryza sativa L.) Grown in Early Season in China

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Phyton-International Journal of Experimental Botany 2020年第1期89卷 97-102页

作者： Xiaohong Yin Hengdong Zhang jiana chen Ruichun Zhang Longsheng Liu Min Huang Guanghui chen Yingbin Zou Crop and Environment Research Center for Human Health College of AgronomyHunan Agricultural UniversityChangsha410128China Hengyang Institute of Agricultural Sciences Santang421101China

Eating quality is of paramount importance to rice(Oryza sativa L.)consumers and soft rice with low amylose content has become popular in *** study was conducted to evaluate the performance of soft rice grown in the early season(ES)dominated by non-soft *** experiments were conducted in Yongan and Santang,Hunan Province,China from *** showed that grain amylose content in soft rice cultivars was consistently lower in the ES compared to the late season(LS).The lower grain amylose content in the ES compared to the LS was partly attributed to higher average daily mean temperature during grain *** significant relationship was observed between grain yield and seed amylose content in ES *** rice cultivars produced a similar average grain yield to non-soft rice cultivars in the *** results encourage breeders to develop more ES rice cultivars with soft texture to meet the consumer demand for this type of rice.

关键词： Amylose content early season rice grain quality grain yield

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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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