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Foreign Friends in China Two American "Peasants" in China

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China Today 1995年第2期44卷 46-48页

作者： chen weiyuan

ＦｏｒｅｉｇｎＦｒｉｅｎｄｓｉｎＣｈｉｎａＴｗｏＡｍｅｒｉｃａｎ＂Ｐｅａｓａｎｔｓ＂ｉｎＣｈｉｎａ￥／／ＴｈｅｙｈａｖｅｌｉｖｅｄｎｅａｒｌｙｈａｌｆａｃｅｎｔｕｒｙｉｎＣｈｉｎａ，ｗｏｒｋｉｎｇｈａｒｄ，ａｌｗａｙ... 详细信息

ＦｏｒｅｉｇｎＦｒｉｅｎｄｓｉｎＣｈｉｎａＴｗｏＡｍｅｒｉｃａｎ＂Ｐｅａｓａｎｔｓ＂ｉｎＣｈｉｎａ￥／／ＴｈｅｙｈａｖｅｌｉｖｅｄｎｅａｒｌｙｈａｌｆａｃｅｎｔｕｒｙｉｎＣｈｉｎａ，ｗｏｒｋｉｎｇｈａｒｄ，ａｌｗａｙｓｃｌｏｓｔｏｔｈｅｓｏｉｌ．Ｈｅ...

关键词： in China Foreign Friends in China Two American Peasants

Deformation reinforcement theory and its application to high arch dams

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Science China(Technological Sciences) 2008年第S2期51卷 32-47页

作者： YANG Qiang,LIU YaoRu,chen YingRu & ZHOU weiyuan State Key Laboratory of Hydroscience and Hydraulic Engineering,Tsinghua University,Beijing 100084,China 1. State Key Laboratory of Hydroscience and Hydraulic Engineering Tsinghua University Beijing 100084 China

In this paper,the deformation reinforcement theory(DRT) proposed by the authors is elaborated with a new definition of instability that an elasto-plastic structure is not stable if it cannot satisfy simultaneously equilibrium condition,kinematical admissibility and constitutive equations under the prescribed *** from the definition,a proof is established to the principle of minimum plastic complementary energy for failured *** is revealed that the principle of mini-mum plastic complementary energy results in relaxed constitutive equations,especially,yield *** is demonstrated with case studies that many key issues in arch dam design,e.g.,global stability,dam-toe reinforcement,dam-toe cracking,dam-abut-ment reinforcement,can be well solved within the framework of the deformation reinforcement *** structural global stability can be described by the curve of the plastic complementary energy vs overloading *** unbalanced-forces obtained by elasto-plastic FEM can be used as the basis of analysis of global stability,dam-heel cracking,dam-toe anchorage and reinforcement of faults of high arch dams and their foundations.

关键词： high arch dams global stability reinforcement unbalanced force plastic complementary energy

Genetic contribution of foreign germplasm to elite Chinese soybean (Glycine max) cultivars revealed by SSR markers

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Chinese Science Bulletin 2006年第9期51卷 1078-1084页

作者： QIN Jun chen weiyuan GUAN Rongxia JIANG chengxi LI Yinghui FU Yashu LIU Zhangxiong ZHANG Mengchen CHANG Ruzhen QIU Lijuan National Key Facility of Crop Gene Resources and Genetic Improvement Key Lab of Crop Gerrnplasm Resources & Biotechology (MOA) Institute of Crop Science Chinese Agricultural Academy of Sciences Beijing 100081 China Hebei Academy of Agricultural and Forestry Science Shijiazhuang 050031 China Heilongjiang Academy of Agricultural Science Suihua 152052 China

Simple sequence repeats (SSR) marker analysis, combined with pedigree analysis, was car- ried out to trace the genetic constitutes of Suinong 14 and Hefeng 25 in assessing the contribution of for- eign germplasm to those elite cultivars. The overall goal is to accumulate information for further effective utilization of foreign germplasm in Chinese soybean breeding programs. SSR clustering results indicated that the genetic base of elite Chinese soybean culti- vars, including Suinong 14 and Hefeng 25, were broadened and enhanced via introduction of Amsoy from the U.S. and Shishengchangye from Japan. The pedigree analysis showed a very high coefficient of parentage between Shishengchangye and Hefeng 25, between Shishengchangye and Suinong 14, and between Amsoy and Suinong 14. The genetic simi- larity between Suinong 14 and Hefeng 25 was 60.58%. Among 20 linkage groups, more genomic regions were transferred from Hefeng 25 to Suinong 14 in linkage group (LG) I, L and C2 than other LGs. Among the unique alleles of foreign parents, five specific loci in Amsoy were transferred to Suinong 14, and three loci from Shishengchangye to Suinong 14. Some SSR loci were proved to be correlated with phenotypes: two loci for seed size introgressed from Shishengchangye to Suinong 14, and one locus forprotein content from Amsoy to Suinong 14. These results indicate that the two foreign parents might have important contributions in the development of Suinong 14 and Hefeng 25.

关键词：大豆谱系分析 SSR 序列分析种质资源

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

Estimating Key Phenological Dates of Multiple Rice Accessions Using Unmanned Aerial Vehicle-Based Plant Height Dynamics for Breeding

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Rice science 2024年第5期31卷 617-628,I0066-I0070页

作者： HONG weiyuan LI Ziqiu FENG Xiangqian QIN Jinhua WANG Aidong JIN Shichao WANG Danying chen Song State Key Laboratory of Rice Biology and Breeding China National Rice Research InstituteHangzhou 311400China College of Computer Science and Technology Zhejiang Sci-Tech UniversityHangzhou 310018China College of Agriculture Yangtze UniversityJingzhou 434025China Plant Phenomics Research Centre Academy for Advanced Interdisciplinary StudiesNanjing Agricultural UniversityNanjing 210095China

Efficient and high-quality estimation of key phenological dates in rice is of great significance in breeding work. Plant height(PH) dynamics are valuable for estimating phenological dates. However, research on estimating the key phenological dates of multiple rice accessions based on PH dynamics has been limited. In 2022, field traits were collected using unmanned aerial vehicle(UAV)-based images across 435 plots, including 364 rice varieties. PH, dates of initial heading(IH) and full heading(FH), and panicle initiation(PI), and growth period after transplanting(GPAT) were collected during the rice growth stage. PHs were extracted using a digital surface model(DSM) and fitted using Fourier and logistic models. Machine learning algorithms, including multiple linear regression, random forest(RF), support vector regression, least absolute shrinkage and selection operator, and elastic net regression, were employed to estimate phenological dates. Results indicated that the optimal percentile of the DSM for extracting rice PH was the 95th(R^(2) = 0.934, RMSE = 0.056 m). The Fourier model provided a better fit for PH dynamics compared with the logistic models. Additionally, curve features(CF) and GPAT were significantly associated with PI, IH, and FH. The combination of CF and GPAT outperformed the use of CF alone, with RF demonstrating the best performance among the algorithms. Specifically, the combination of CF extracted from the logistic models, GPAT, and RF yielded the best performance for estimating PI(R^(2) = 0.834, RMSE = 4.344 d), IH(R^(2) = 0.877, RMSE = 2.721 d), and FH(R^(2) = 0.883, RMSE = 2.694 d). Overall, UAV-based rice PH dynamics combined with machine learning effectively estimated the key phenological dates of multiple rice accessions, providing a novel approach for investigating key phenological dates in breeding work.

关键词： phenological date plant height unmanned aerial vehicle machine learning rice breeding

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我国花卉产业发展问题及对策

安徽农业科学 2007年第31期35卷 10119-10120页

作者：陈卫元扬州环境资源职业技术学院江苏扬州225127

分析了我国花卉产业存在的问题,并提出了发展对策。

关键词：花卉产业问题对策

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菲白竹叶饲用价值的初步研究

江苏农业科学 2008年第6期36卷 215-216页

作者：陈卫元扬州环境资源职业技术学院江苏扬州225127

对菲白竹叶片营养成分及随季节的变化进行研究，结果表明：菲白竹叶片含水率为57．71％，粗蛋白为13．14％，粗脂肪为6．24％，粗纤维为39．02％，粗灰分为14．42％，可利用糖为5．29％；菲白竹叶片含有18种蛋白氨基酸和1种非蛋白氨基... 详细信息

对菲白竹叶片营养成分及随季节的变化进行研究，结果表明：菲白竹叶片含水率为57．71％，粗蛋白为13．14％，粗脂肪为6．24％，粗纤维为39．02％，粗灰分为14．42％，可利用糖为5．29％；菲白竹叶片含有18种蛋白氨基酸和1种非蛋白氨基酸1-氨基丁酸，其中8种动物体必需氨基酸都可以检测到，并且含量比较丰富。从营养成分角度考虑，菲白竹最佳刈割时间为8～10月。

关键词：菲白竹营养成分饲用价值