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Contribution of the ear and the flag leaf to grainfilling in durum wheat inferred from the carbon isotope signature: Genotypic and growing conditions effects

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Journal of Integrative Plant Biology 2014年第5期56卷 444-454页

作者： rut Sanchez-Bragado Abdelhalim Elazab Bangwei Zhou Maria Dolors Serret Jordi Bort Maria Teresa Nieto-Taladriz José Luis Araus Unit of Plant Physiology Department of Plant Biology Faculty of Biology University of Barcelona National Institute for Agricultural and Food Research and Technology (INIA)

The ear, together with the flag leaf, is believed to play a major role as a source of assimilates during grain filling in C3cereals. However, the intrusive nature of most of the available methodologies prevents reaching conclusive results in this regard. This study compares the carbon isotope composition（d13C） in its natural abundance in the water‐soluble fractions of the flag leaf blade and the ear with the d13C of mature kernels to assess the relative contribution of both organs to grain filling in durum wheat（Triticum turgidum L. ***）. The relative contribution of the ear was higher in landraces compared to modern cultivars, as well as in response to nitrogen fertilization and water stress. Such genotypic and environmentally driven differences were associated with changes in harvest index（HI）, with the relative contribution of the ear being negatively associated with HI. In the case of the genotypic differences, the lower relative contribution of the ear in modern cultivars compared with landraces is probably associated with the appearance in the former of a certain amount of source limitation driven by a higher HI. In fact, the relative contribution of the ear was far more responsive to changes in HI in modern cultivars compared with landraces.

关键词： Carbon isotope discrimination ear flag leaf grain filling harvest index photosynthesis

Synthesis of Novel Nucleoside: 2'-deoxyuridine-3',5'-di(4, 4'-dimethoxy-5, 6, 5', 6'-dimethylenedioxybipheny1-2-methoxy carbonyl 2'-carboxylate)

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Chinese Chemical Letters 1999年第5期10卷 341-344页

作者： rut Yun GUO Jun Biao CHANG Rong Feng CHEN Jing Xi XIE(Henan Institute of Chemistry. Zhengzhou 450003) Henan Inst Chem Zhengzhou 450003 Peoples R China

Hepatitis B Virus (HBV) belongs to the family of hepadnaviridac which comprisesseveral animal viruses, including human HBV. woodchuck hepatitis (WHV). ground squirrelhepatitis virus (GSHV) and duck hepatitis B virus (DHBV), These viruses share commonfeatures such as the genome organization, mode of replication and similar tropism tar hepatocytes'.2'-deoxyuridine-substituted biphenyl carboxylate was synthesized as anti-hepatitis B agents. Thestructure was confirmed by UV. IHNMR spectrum and elementary analysis.

关键词： 2'-Deoxyuridine biphenyl carboxylate biphenyl 2'-deoxyuridine

Uncertainties and Paradoxes About Cuba’s Future

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International Relations and Diplomacy 2018年第7期6卷 390-395页

作者： rut Diamint Laura Tedesco Universidad Torcuato Di Tella Buenos AiresArgentina Saint Louis University/Madrid Campus MadridSpain

Historically,the Fuerzas Armadas Revolucionarias(FARs)of Cuba have held an important role since *** this paper,we offer some ideas regarding the FAR political and economic power in Cuba’s new political *** paper explores the role of FAR,the Cuban institution that is less transparent and most difficult to *** discusses its economic activities and its relationship with civil society,and offers possible scenarios for the post Castro *** article presents these ideas which have emerged after three visits to Cuba where we carried out 53 interviews in Havana,Santa Clara,and Cienfuegos.

关键词： Cuba Fuerzas Armadas Revolucionarias(FARs) Raúl Castro Fidel Castro

Squarylium Cyanine Dyes for Photoelectric Conversion

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Chinese Chemical Letters 1998年第10期9卷 913-916页

作者： Wei ZHAO Bac Wen ZHANG Yi CAO Xu rut XIAO(Institute of Photographic Chemistry, Chinese Academy of Sciences, Beijing 100101 ) Chinese Acad Sci Inst Photog Chem Beijing 100101 Peoples R China

Two squarylium cyanine dyes (Sqs) were synthesized to explore their applications in photoelectrochemical solar cells. Nanocrystalline TiO2 electrodes modified with Sqs have been prepared to probe the photosensitization effects. A rather high photoelectric conversion efficiency of up to 2.17% and the top incident monochromatic photon-to-photocurrent conversion efficiency (IPCE) of 6.2% at 650nm were obtained from the Sq2-modified nanocrystalline TiO2 electrode.

关键词： squarylium cyanine dye photoelectric conversion

Physiological traits contributed to the recent increase in yield potential of winter wheat from Henan Province, China

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Journal of Integrative Plant Biology 2014年第5期56卷 492-504页

作者： Bangwei Zhou álvaro Sanz-Sáez Abdelhalim Elazab Tianmin Shen rut Sánchez-Bragado Jordi Bort Maria Dolors Serret José Luis Araus Unit of Plant Physiology Faculty of Biology University of Barcelona Henan Tianmin Seed Company Lankao County Department of Plant Biology University of Illinois Urbana-Champaign

This experiment aims to test the traits responsible for the increase in yield potential of winter wheat released in Henan Province, China. Seven established cultivars released in the last 20 years and three advanced lines were assayed. The results showed that grain yield was positively correlated with harvest index（HI）, kernel number per square meter, and aboveground biomass. In addition, the HI and aboveground biomass showed an increasing trend with the year of ***, we can conclude that bread wheat breeding advances during recent decades in Henan Province, China,have been achieved through an increase in HI, kernel number per square meter, and aboveground biomass. A higher d13C seems also to be involved in these advances, which suggests a progressive improvement in constitutive water use efficiency not associated with a trend towards lower stomatal conductance in the most recent genotypes. However, genetic advance Researchdoes not appear related to changes in photosynthesis rates on area basis when measured in the flag leaf or the spike,but only to a higher, whole‐spike photosynthesis. Results also indirectly support the concept that under potential yield conditions, the spike contributed more than the flag leaf to kernel formation.

关键词： Carbon isotopes grain yield net carbon exchange nitrogen content yield potential

An Efficient Method for the Synthesis of Aliphatic α-Organothio Aldoximes

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Chinese Chemical Letters 1999年第2期10卷 97-98页

作者： Xin LIU rut Lian SHAO Run Qiu HUANG(Research Institute and State key Laboratory of Elemento-Organic Chemistry,Nankai University. Tianjin. 300071) Nankai Univ Inst Res Tianjin 300071 Peoples R China Nankai Univ State Key Lab Elementoorgan Chem Tianjin 300071 Peoples R China

A new and simple procedure for the synthesis of aliphatic α-organothio aldoximes wasreported. The aliphatic aldoxime was chlorinated by t-BuOCl, the resulting hydroxime acidchloride was treated with triethylamine and alkyl mercaptan in a one pot procedure to get the targetcompounds. The method is very efficient with high yield and good purity.

关键词： Aliphatic α-organothio aldoximes α-chlorination t-butyl hypochlorite

Synthesis of Asymmetric 4H-1, 3, 2-Benzodioxaphosphorin 2-Sulfides from Intramolecular Cyclization Reaction

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Chinese Chemical Letters 1999年第9期10卷 731-732页

作者： Jun Ran CHENG Jia WEN rut Lian SHAO Huan Yan CAO Run Qiu HUANG(Institute of Elemento-Organic Chemistry, Nankai University. Tianjin 300071) Nankai Univ Inst Elementoorgan Chem Tianjin 300071 Peoples R China

Asymmetric 6-substituted-2-methoxy-4-(2,4-dichlorophenyl)-4H-1,3,2-benzodioxaphosphorin a-sulfides were prepared from intramolecular cyclization. The diastereomers were separated by column chromatography and fractional crystallization. Their structures were characterized on the basis of H-1 NMR, P-31 NMR and x-ray diffraction analysis.

关键词： 4H-1,3,2-benzodioxaphosphorin diastereomer intramolecular cyclization reaction

Synthesis of N-t-Butyl-N'-Aminocarbonyl-N-(Substituted) Benzoylhydrazine Containing α-Aminoalkylphosphonate Groups

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Chinese Chemical Letters 2000年第5期11卷 401-402页

作者： Qing Min WANG Run Qiu HUANG Zai Guo LI rut Lian SHAO (Research Institute and State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071) Nankai Univ Res Inst Tianjin 300071 Peoples R China Nankai Univ State Key Lab Elementoorgan Chem Tianjin 300071 Peoples R China

A variety of novel N-t-butyl-N'-aminocarbonyl-N-(substitute)Benzoylhydrazines containing α-aminoalkylphosphonate groups were synthesized by the addition of N-t-butyl-N- (substituted)benzoylhydrazines to α-isocyanatoalkylphosphonates. which were synthesized by the reaction of α-aminoalkylphosphonates with triphosgene in good yields. The structures of products including by-products were confirmed by 1H NMR, 31P NMR. IR, mass spectroscopy- and elemental analysis.

关键词： Diacylhydrazines,α-aminoalkylphosphonates triphosgene.

The accelerated post-infarction progression of cardiac remodelling is associated with genetic changes in an untreated streptozotocin-induced diabetic rat model

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The accelerated post-infarction progression of cardiac remod...