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Enriching Iodine and Regulating Grain Aroma,Appearance Quality,and Yield in Aromatic Rice by Foliar Application of Sodium Iodide

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Rice science 2024年第3期31卷 328-342,I0046-I0054页

作者： HONG Weiyuan DUAN Meiyang WANG Yifei CHEN Yongjian MO Zhaowen qi jianying PAN Shenggang TANG Xiangru State Key Laboratory for Conservation and Utilization of Subtropical Agricultural Bioresources South China Agricultural UniversityGuangzhou 510642China Scientific Observing and Experimental Station of Crop Cultivation in South China Ministry of Agriculture and Rural AffairGuangzhou 510642China Guangzhou Key Laboratory for Science and Technology of Aromatic Rice Guangzhou 510642China

Applying iodine fertilizers to cultivate iodine-rich crops for daily intake is an effective approach for iodine supplementation,especially for aromatic *** experiments were conducted during the early growing seasons of 2021 and 2022 to evaluate the impacts of foliar application of iodine fertilizer on aromatic rice and to explore the optimal iodine fertilizer *** the full heading stage,six different concentrations of sodium iodide solutions of 0%(CK),0.010%(T1),0.025%(T2),0.050%(T3),0.075%(T4),and 0.100%(T5)were applied to indica aromatic rice cultivars Meixiangzhan 2 and *** results showed that sodium iodide treatments significantly increased the iodine and sodium contents in both leaves and *** with the CK,the T1 and T2 treatments increased the 2-acetyl-1-pyrroline(2-AP)content in mature grains by 8.41%-101.66%and 13.58%-74.60%,*** in the contents of 1-pyrroline-5-carboxylic acid,proline,1-pyrroline,and methylglyoxal,as well as the activity of proline dehydrogenase were also ***,sodium iodide treatments remarkably decreased the chalky grain rate,chalkiness area,and chalkiness degree of aromatic rice,with the T2 treatment exhibiting a 17.79%-47.42%decrease in chalkiness degree compared with the ***,T1 and T2 treatments showed beneficial impacts on chlorophyll content,photosynthetic characteristics,and yield components,while T3,T4,and T5 treatments exhibited adverse effects on leaf and grain *** linear discriminant analysis revealed significant differences between *** correlation analysis and piecewise structural equation modeling showed that the iodine and sodium influenced the photosynthetic characteristics and chlorophyll content of the leaves,thereby regulating the 2-AP biosynthesis and yield components,ultimately affecting the 2-AP content and ***,this study suggests that foliar application of 0.025%sodium iodide is an effective method t

关键词： 2-acetyl-1-pyrroline appearance quality aromatic rice foliar application grain yield iodine

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Assessing the yield difference of double-cropping rice in South China driven by radiation use efficiency

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Journal of Integrative Agriculture 2024年第11期23卷 3692-3705页

作者： Jian Lu Sicheng Deng Muhammad Imran Jingyin Xie Yuanyuan Li jianying qi Shenggang Pan Xiangru Tang Meiyang Duan State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources/College of Agriculture South China Agricultural University Scientific Observing and Experimental Station of Crop Cultivation in South China Ministry of Agriculture and Rural Affairs Guangzhou Key Laboratory for Science and Technology of Fragrant Rice

Double-cropping rice in South China continues to break the total yield record,but the yield potential of singlecropping rice is not being *** use efficiency （RUE） has been singled out as an important determinant of grain yield in many cereal ***,there is no information on whether the yield gaps in doublecropping rice involve differences in *** experiments were performed over two years to evaluate the effects of intercepted radiation （IP） and RUE on the above-ground biomass production,crop growth rate （CGR）,and harvest index （HI）,in four representative rice varieties,i.e.,Xiangyaxiangzhan （XYXZ）,Meixiangzhan 2 （MXZ2）,Nanjingxiangzhan （NJXZ）,and Ruanhuayoujinsi （RHYJS）,during the early and late seasons of rice cultivation in South *** results revealed that grain yield in the early season was 8.2%higher than in the late *** yield advantage in the early season was primarily due to higher spikelets per panicle and above-ground biomass resulting from a higher *** spikelets per panicle in the early season were 6.5,8.3,6.9,and 8.5%higher in XYXZ,MXZ2,NJXZ,and RHYJS,respectively,than in the late *** higher early season grain yield was more closely related to RUE in the middle tillering stage （R2=0.34）,panicle initiation （R2=0.16）,and maturation stage（R2=0.28）,and the intercepted photosynthetically active radiation （IPAR） in the maturation stage （R2=0.28）,while the late season grain yield was more dependent on IPAR in the middle tillering stage （R2=0.31） and IPAR at panicle initiation （R2=0.23）.The results of this study conclusively show that higher RUE contributes to the yield progress of early season rice,while the yield improvement of late season rice is attributed to higher radiation during the early reproductive *** allocating the RUE of double-cropping rice with high RUE varieties or adjustments of the sowing period merits further study.

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Speciation analysis of metals (Tl,Cd and Pb) in Tl-containing pyrite and its cinder from Yunfu Mine,China,by ICP-MS with sequential extraction

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Chinese Journal Of Geochemistry 2010年第1期29卷 113-119页

作者： WANG Chunlin CHEN Yongheng PAN Jianyang ZHANG Ping qi jianying LIU Juan LI Xiangping WANG Jin State Key Laboratory of Organic Geochemistry Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou 510640 China School of Environmental Science and Engineering Guangzhou University Guangzhou 510006 China Graduate University of Chinese Academy of Sciences Beijing 100049 China Hangzhou Environmental Monitoring Center Station Hangzhou 310007 China

The speciation of heavy metals such as thallium,cadmium and lead existing in pyrite and pyrite cinder was analyzed by ICP-MS with a sequential extraction *** distribution patterns of these metals including exchangeable,reducible,oxidizable and residual fractions were ***,Cd and Pb in pyrite and pyrite cinder samples from each extraction step were determined by inductively coupled plasma mass spectrometry(ICP-MS).Under the optimized instrumental conditions,detection limits of Tl,Cd and Pb in different matrices were within the range of 0.006-0.07 μg/L,and the relative standard deviations ranged from 0.8% to 1.2%.The accuracy of Tl,Cd and Pb determination was checked by analyzing two certified reference *** results demonstrate that trace Tl,Cd and Pb in the samples can be accurately *** sequential extraction results revealed that the percent contents of Tl,Cd and Pb in exchangeable,reducible and oxidizable fractions in pyrite cinder are different from those in pyrite and in pyrite ***,Cd and Pb mostly are distributed in residual ***,the mobility of metals in pyrite is higher than that in pyrite *** distributions of Tl,Cd and Pb in the non-residual fraction are not dominant in pyrite cinder,the total concentrations of them could not be ***,attention must be paid to the risk of potential pollution by pyrite cinder.

关键词：电感耦合等离子体质谱连续提取形态分析黄铁矿重金属铊镉铅

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Environmental exposure and flux of thallium by industrial activities utilizing thallium-bearing pyrite

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Science China Earth Sciences 2013年第9期56卷 1502-1509页

作者： CHEN YongHeng WANG ChunLin LIU Juan WANG Jin qi jianying WU YingJuan Key Laboratory of Waters Safety & Protection in the Pearl River Delta Ministry of EducationGuangzhou University Guangdong Provincial Academy of Environmental Science Department of Geosciences Taiwan University South China Institute of Environmental Science Ministry of Environmental Protection

Thallium(Tl) is a typical toxic heavy metal,with higher toxicity to mammals than Hg,Cd,and *** assessments of its environmental exposure and flux are central to effective management and control of Tl *** paper first presents in detail the environmental exposure and flux of Tl by typical industrial activities utilizing Tl-bearing pyrite minerals to produce sulfuric *** this purpose,sequential extraction and Inductively Coupled Plasma Mass Spectrometry(ICP-MS) were used to investigate total content and geo-chemical partitioning of Tl in raw pyrite ores and solid roasting wastes,thereby uncovering Tl distribution and transformation during the production *** showed that some portions of Tl bearing in the minerals went into vapor,which transferred Tl into different processes;and some portions of Tl went into water during the gas washing procedure,leaving some other portions remained in the solid *** importantly,detailed investigation revealed that 40% of Tl in the pyrite minerals was active,among which 25% of Tl originally in the pyrite minerals was washed into water during gas cleaning process and 15% of active Tl retained in the *** latter portion of active Tl could be possibly transferred to the soil or water with the slag deposal or being reused;and 60% of Tl remained relatively stable in the residual phase.

关键词： Environmental exposure and flux of thallium by industrial activities utilizing thallium-bearing pyrite

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抛光色选工艺过程对香稻米2-AP含量和糊化特性的影响

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中国稻米 2024年第4期30卷 53-55,63页

作者：杜晓旭张莹莹何珍珍刘剑涛莫钊文潘圣刚田华段美洋祁剑英唐湘如华南农业大学亚热带农业生物资源保护与利用国家重点实验室/农业农村部华南地区作物栽培科学观测实验站/广州市丝苗香米科学与技术重点实验室广州510642

抛光色选工序是生产食用大米的重要步骤,会影响稻米品质和香气2-乙酰基-1-吡咯啉(2-AP)含量。以香稻品种19香和软华优金丝为材料,研究了工业生产中抛光色选工艺过程对香米2-AP含量和糊化特性的影响。结果表明,在稻米抛光阶段增加抛光色... 详细信息

抛光色选工序是生产食用大米的重要步骤,会影响稻米品质和香气2-乙酰基-1-吡咯啉(2-AP)含量。以香稻品种19香和软华优金丝为材料,研究了工业生产中抛光色选工艺过程对香米2-AP含量和糊化特性的影响。结果表明,在稻米抛光阶段增加抛光色选程序会导致19香和软华优金丝2-AP含量分别损失51.66%和38.10%,蛋白质含量分别降低7.31%和1.49%,水分含量、淀粉峰值黏度、最低黏度、最终黏度和消减值都有上升,而回冷值降低。

关键词：香稻抛光品质 2-乙酰基-1-吡咯啉淀粉糊化特性

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苗期喷施茉莉酸甲酯对香稻品种象牙香占香气的影响

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中国稻米 2024年第3期30卷 67-71,77页

作者：邢丕鹏何珍珍张震罗昊文张莹莹邓思呈莫钊文潘圣刚田华段美洋祁剑英唐湘如华南农业大学亚热带农业生物资源保护与利用国家重点实验室/农业农村部华南地区作物栽培科学观测实验站/广州市丝苗香米科学与技术重点实验室广州510642

茉莉酸甲酯能够提高植物的抗逆境胁迫能力,但在对香稻香气物质2-乙酰基-1-吡咯啉(2-AP)的影响研究还鲜有报道。以香稻品种象牙香占为试验材料,设置茉莉酸甲酯3种喷施浓度(0.25、0.50和1.00 mmol/L),研究苗期喷施对香稻幼苗2-AP合成与累... 详细信息

茉莉酸甲酯能够提高植物的抗逆境胁迫能力,但在对香稻香气物质2-乙酰基-1-吡咯啉(2-AP)的影响研究还鲜有报道。以香稻品种象牙香占为试验材料,设置茉莉酸甲酯3种喷施浓度(0.25、0.50和1.00 mmol/L),研究苗期喷施对香稻幼苗2-AP合成与累积、香气前体物质含量、香气相关酶活性、香气相关基因表达量调控、抗性酶活性变化和秧苗素质的影响。结果表明,与对照(CK)相比,喷施适当的茉莉酸甲酯浓度(0.50~1.00 mmol/L),香稻幼苗2-AP含量增加,香气合成前体物质1-吡咯啉、丙酮醛和1-吡咯啉-5-羧酸(P5C)含量提高,二胺氧化酶2基因(DAO4)、鸟氨酸转氨酶基因(OAT)和脯氨酸脱氢酶基因(ProDH)表达量提升。茉莉酸甲酯处理还提高了香稻秧苗素质,增加了抗性酶活性,提高了抗氧化能力。适度的茉莉酸甲酯能提高香稻2-AP含量和秧苗素质,归因于相关酶活性和基因表达量的提高。

关键词：香稻 2-乙酰基-1-吡咯啉茉莉酸甲酯秧苗素质

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不同基因型香稻品种在广州从化的适应性研究

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中国稻米 2024年第2期30卷 105-107,111页

作者：何珍珍张莹莹代兰怡文韬姚祥滨彭立功莫钊文潘圣刚田华段美洋祁剑英唐湘如华南农业大学农学院/亚热带农业生物资源保护与利用国家重点实验室/农业农村部华南地区作物栽培科学观测实验站广州510642

为筛选适宜在广州从化区种植的香稻品种,以6个香稻品种为材料,调查各香稻品种的产量和籽粒香气(2-AP)含量。结果表明,软华优金丝产量最高,为548 kg/hm^(2),但象牙香占、青香优19香、美香占2号的产量与软华优金丝无显著差异。象牙香占籽... 详细信息

为筛选适宜在广州从化区种植的香稻品种,以6个香稻品种为材料,调查各香稻品种的产量和籽粒香气(2-AP)含量。结果表明,软华优金丝产量最高,为548 kg/hm^(2),但象牙香占、青香优19香、美香占2号的产量与软华优金丝无显著差异。象牙香占籽粒2-AP含量最高,与青香优19香差异不显著,但显著高于其他品种。各品种2-AP含量高的原因在于叶片和籽粒中前体物质如脯氨酸、1-吡咯啉和1-吡咯啉-5羧酸含量保持较高水平。象牙香占、青香优19香和软华优金丝在从化种植可以同时保持较高的产量和籽粒2-AP含量,可为从化香米产业的发展提供良好的品种支持。

关键词：香稻 2-AP 产量品种

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(+)/(-)-Mycosphatide A,a pair of highly oxidized polyketides with lipid-lowering activity from the mangrove endophytic fungus Mycosphaerella ***-DZG01

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Chinese Chemical Letters 2024年第9期35卷 210-213页

作者： qi Tan Run-Zhu Fan Wencong Yang Ge Zou Tao Chen jianying Wu Bo Wang Sheng Yin Zhigang She School of Chemistry Sun Yat-sen UniversityGuangzhou 510006China School of Pharmaceutical Sciences Sun Yat-sen UniversityGuangzhou 510006China

(±)-Mycosphatide A(1a/1b),a pair of highly oxidized enantiomeric polyketides featuring a unique5/5/6/5-fused tetracyclic ring system,were isolated from the mangrove endophytic fungus Mycosphaerella *** structures were established by extensive spectroscopic analyses,single crystal Xray diffraction,and experimental electronic circular dichroism(ECD)spectra *** plausible biosynthetic pathway of 1 was proposed,which involved the generation of a key spiro[4.5]decane ***(+)-1a and(-)-1b exhibited significant lipid-lowering activity in 3T3-L1 adipocytes model,with EC50values of 7.85±1.56 and 8.87±0.80μmol/L,respectively.

关键词： Mangrove endophytic fungus Mycosphaerella sp. Polyketide Highly oxidized Lipid-lowering activity

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Improvement of Ga_(2)O_(3)vertical Schottky barrier diode by constructing NiO/Ga_(2)O_(3)heterojunction

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Journal of Semiconductors 2024年第4期45卷 63-68页

作者： Xueqiang Ji Jinjin Wang Song qi Yijie Liang Shengrun Hu Haochen Zheng Sai Zhang jianying Yue Xiaohui qi Shan Li Zeng Liu Lei Shu Weihua Tang Peigang Li School of Integrated Circuits&State Key Laboratory of Information Photonics and Optical Communications Beijing University of Posts and TelecommunicationsBeijing 100876China College of Integrated Circuit Science and Engineering Nanjing University of Posts and TelecommunicationsNanjing 210023China Beijing Microelectronics Technology Institute Beijing 100076China

The high critical electric field strength of Ga_(2)O_(3)enables higher operating voltages and reduced switching losses in power electronic *** Schottky metals and epitaxial films are essential for further enhancing device *** this work,the fabrication of vertical Ga_(2)O_(3)barrier diodes with three different barrier metals was carried out on an n--Ga_(2)O_(3)homogeneous epitaxial film deposited on an n+-β-Ga_(2)O_(3)substrate by metal-organic chemical vapor deposition,excluding the use of edge *** ideal factor,barrier height,specific on-resistance,and breakdown voltage characteristics of all devices were investigated at room *** addition,the vertical Ga_(2)O_(3)barrier diodes achieve a higher breakdown volt-age and exhibit a reverse leakage as low as 4.82×10^(-8)A/cm^(2)by constructing a NiO/Ga_(2)O_(3)***,Ga_(2)O_(3)power detailed investigations into Schottky barrier metal and NiO/Ga_(2)O_(3)heterojunction of Ga_(2)O_(3)homogeneous epitaxial films are of great research potential in high-efficiency,high-power,and high-reliability applications.

关键词： Ga_(2)O_(3) Schottky barrier diode NiO/Ga_(2)O_(3)heterojunction

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论一般法律会话含义推理及其有效性

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法学论坛 2016年第2期31卷 130-137页

作者：齐建英郑州大学马克思主义学院河南郑州450001

一般会话含义推理是推出说话者的一般会话含义,促进对话者之间达成理解的推理。它的前提和基础是对合作原则的遵循。正是因为合作原则在法律推理中的适用,一般会话含义推理才作为一种法律推理方法存在。相对于关于前提和结论的演绎、归... 详细信息

一般会话含义推理是推出说话者的一般会话含义,促进对话者之间达成理解的推理。它的前提和基础是对合作原则的遵循。正是因为合作原则在法律推理中的适用,一般会话含义推理才作为一种法律推理方法存在。相对于关于前提和结论的演绎、归纳等推导方法,一般法律会话含义推理是将推导融入对话过程的理解方法,是实现个案正义的必要方法。一般法律会话含义推理的有效性以逻辑有效性为基础,以程序有效性为核心,以语言有效性为前提。

关键词：一般会话含义推理法律推理合作原则有效性

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