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Effects of molybdenum on nutrition, quality, and flavour compounds of strawberry (Fragaria×ananassa Duch. Cv. Akihime) fruit

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Journal of Integrative Agriculture 2017年第7期16卷 1502-1512页

作者： LIU Li XIAO Wei JI Mei-ling YANG Chao LI Ling GAO Dong-sheng FU Xi-ling State Key Laboratory of crop Biology College of Horticulture Science and Engineering Shandong Agricultural University

Molybdenum （Mo） is an essential trace element in plant nutrition and physiology. It affects photosynthesis and photosyn- thate accumulation, therefore also affecting fruit quality and nutritional content. This study assessed the effects of different sodium molybdate （Na2MoO4） concentrations on strawberry. Five different Mo concentrations were applied in this experi- ment, including 0, 67.5, 135, 168.75, 202.5 g ha-1, respectively. The mineral concentration, including nitrogen （N）, Mo, iron （Fe）, copper （Cu）, and selenium （Se） was assessed in strawberry fruit, as well as chlorophyll content, nutrition quality, taste and aroma. Results showed that net photosynthetic rate （Pn） and chlorophyll content for the strawberry plants increased with an increase in Mo concentration; and the contents of N, Mo, Fe, Cu, total soluble solids （TSS）, titratable acidity （TA）, sweetness, some sugars, organic acids, and some volatile compounds in the fruit all increased, as well. However, the Mo concentration did not significantly affect the concentrations of Se, sucrose, lactic acid, acetic acid, and some aroma compounds. Fruit sprayed with 135 g ha-1 Mo exhibited the highest TSS and sweetness values, as well as the highest N and Fe concentrations among all the treatments. P value and chlorophyll content, fructose, glucose, sorbitol and total sugar contents in fruit supplied with 135 g ha-1 Mo were also higher than that in other treatments. Fruit sprayed with a Mo concentration of 67.5 g ha-1 exhibited significantly higher ascorbic acid （AsA） values than that of control. Ninety-seven volatile compounds were identified in fruit extracted by head-space solid-phase microextraction （HS-SPME） coupled with gas chromatography-mass spectrometry （GC-MS）. Fruits sprayed with 135 g ha-1 Mo had the highest concentrations of six characteristic aroma compounds, including methyl butanoate, y-decalactone, ethyl butanoate, methyl hexanoate, y-do- decalactone, and ethyl caproate.

关键词： strawberry molybdenum nutrition volatile compounds flavour

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Gross Nitrification Rates and Nitrous Oxide Emissions in an Apple Orchard Soil in Northeast China

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Pedosphere 2015年第4期25卷 622-630页

作者： GE Shunfeng JIANG Yuanmao WEI Shaochong State Key Laboratory of crop Biology College of Horticulture Science and Engineering Shandong Agricultural University

A better understanding of nitrogen （N） transformation in agricultural soils is crucial for the development of sustainable and environmental-friendly N fertilizer management and the proposal of effective N20 mitigation strategies. This study aimed： i） to elucidate the seasonal dynamic of gross nitrification rate and N20 emission, ii） to determine the influence of soil conditions on the gross nitrification, and iii） to confirm the relationship between gross nitrification and N20 emissions in the soil of an apple orchard in Yantai, Northeast China. The gross nitrification rates and N20 fluxes were examined from March to October in 2009, 2010, and 2011 using the barometric process separation （BaPS） technique and the static chamber method. During the wet seasons gross nitrification rates were 1.64 times higher than those under dry season conditions. Multiple regression analysis revealed that gross nitrification rates were significantly correlated with soil temperature and soil water-filled pore space （WFPS）. The relationship between gross nitrification rates and soil WFPS followed an optimum curve peaking at 60% WFPS. Nitrous oxide fluxes varied widely from March to October and were stimulated by N fertilizer application. Statistically significant positive correlations were found between gross nitrification rates and soil N20 emissions. Further evaluation indicated that gross nitrification contributed significantly to N20 formation during the dry season （about 86%） but to a lesser degree during the wet season （about 51%）. Therefore, gross nitrification is a key process for the formation of N20 in soils of apple orchard ecosystems of the geographical region.

关键词： barometric process separation system mineral N N transformation soil water-filled pore space static chamber

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A CIB1-LIKE transcription factor GmC IL10 from soybean positively regulates plant flowering

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science China(Life sciences) 2015年第3期58卷 261-269页

作者： YANG DeGuang ZHAO Wang MENG YingYing LI HongYu LIU Bin College of Agriculture Northeast Agricultural University Institute of crop science Chinese Academy of Agricultural Sciences

CRYPTOCHROME-INTERACTING basic helix-loop-helix 1(CIB1) is a well characterized transcriptional factor which promotes flowering through the physical interaction with the blue light receptor CRYPTOCHROME 2(CRY2) in Arabidopsis. However, the role of its counterpart in crop species remains largely unknown. Here, we describe the isolation and characterization of a CIB1 homolog gene, Glycine max CIB1-LIKE10(GmC IL10), from soybean genome. The m RNA expression of GmC IL10 in the unifoliate leaves shows a diunal rhythm in both long day(LD) and short day(SD) photoperiod, but it only oscillates with a circadian rhythm when the soybean is grown under LDs, indicating that the clock regulation of GmC IL10 transcription is LD photoperiod-dependent. Moreover, its m RNA expression varies in different tissue or organs, influenced by the develpomental stage, implying that GmC IL10 may be involved in the regulation of multiple developmental processes. Similar to CIB1, Gm CIL10 was evident to be a nuclei protein and ectopically expression of GmC IL10 in transgenic Arabidopsis accelerates flowering under both LDs and SDs, implying that CIBs dependent regulation of flowering time is an evolutionarily conserved mechanism in different plant species.

关键词： photoperiod flowering time soybean Glycine max CIB1-LIKE10

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Genetic diversity and construction of core collection in Chinese wheat genetic resources

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Chinese science Bulletin 2008年第10期53卷 1518-1526页

作者： HAO ChenYang DONG YuChen WANG LanFen YOU GuangXia ZHANG HongNa GE HongMei JIA JiZeng ZHANG XueYong Key Laboratory of crop Germplasm and Biotechnology Ministry of Agriculture/The National Key Facility for Crop Gene Resourcesand Genetic Improvement/Institute of Crop Science Chinese Academy of Agricultural Sciences Beijing 100081 China

Genetic diversity among 5029 accessions representing a proposed Chinese wheat core collection was analyzed using 78 pairs of fluorescent microsatellite (SSR) primers mapped to 21 chromosomes. A stepwise hierarchical sampling strategy with priority based on 4×105 SSR data-points was used to construct a core collection from the 23090 initial collections. The core collection consisted of 1160 accessions, including 762 landraces, 348 modern varieties and 50 introduced varieties. The core ac-counts for 23.1% of the 5029 candidate core accessions and 5% of the 23090 initial collections, but retains 94.9% of alleles from the candidate collections and captures 91.5% of the genetic variation in the initial collections. These data indicate that it is possible to maintain genetic diversity in a core collection while retaining fewer accessions than the accepted standard, i.e., 10% of the initial collections captured more than 70% of their genetic diversity. Estimated genetic representation of the core con-structed by preferred sampling (91.5%) is much higher than that by random sampling (79.8%). Both mean genetic richness and genetic diversity indices of the landraces were higher than those of the modern varieties in the core. Structure and principal coordinate analysis revealed that the landraces and the modern varieties were two relatively independent subpopulations. Strong genetic differentiation associated with ecological environments has occurred in the landraces, but was relatively weak in the modern cultivars. In addition, a mini-core collection was constructed, which consisted of 231 accessions with an estimated 70% representation of the genetic variation from the initial collections. The mini-core has been distributed to various research and breeding institutes for detailed phenotyping and breeding of genetic introgression lines.

关键词：中国小麦遗传因素 SSR 基因

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Fine-grained and heterogeneous proxy re-encryption for secure cloud storage

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Chinese science Bulletin 2014年第32期59卷 4201-4209页

作者： Peng Xu Hongwu Chen Deqing Zou Hai Jin Services Computing Technology and System Laboratory Cluster and Grid Computing Laboratory School of Computer Science and Technology Huazhong University of Science and Technology

Cloud is an emerging computing *** has drawn extensive attention from both academia and *** its security issues have been considered as a critical obstacle in its rapid *** data owners store their data as plaintext in cloud,they lose the security of their cloud data due to the arbitrary accessibility,specially accessed by the un-trusted *** order to protect the confidentiality of data owners’cloud data,a promising idea is to encrypt data by data owners before storing them in ***,the straightforward employment of the traditional encryption algorithms can not solve the problem well,since it is hard for data owners to manage their private keys,if they want to securely share their cloud data with others in a fine-grained *** this paper,we propose a fine-grained and heterogeneous proxy re-encryption(FHPRE)system to protect the confidentiality of data owners’cloud *** applying the FH-PRE system in cloud,data owners’cloud data can be securely stored in cloud and shared in a fine-grained ***,the heterogeneity support makes our FH-PRE system more efficient than the previous ***,it provides the secure data sharing between two heterogeneous cloud systems,which are equipped with different cryptographic primitives.

关键词：安全问题数据存储加密算法细粒度异构代理计算模式数据共享

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Methods for mapping QTLs underlying endosperm traits based on random hybridization design

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Chinese science Bulletin 2006年第16期51卷 1976-1981页

作者： WEN Yongxian WU Weiren College of crop science Fujian Agriculture & Forestry UniversityFuzhou 350002 China

Several methods of interval mapping of QTLs underlying endosperm traits based on random hybridization designs and the triploid genetic model are proposed. The basic idea is: plants (or lines) from a population with known marker genotype information are randomly hybridized to generate a population of hybrid lines for endosperm QTL mapping; a mixture of seeds of each hybrid line is measured for the en- dosperm trait to get the mean of the line; then en- dosperm QTL mapping and effect estimation is per- formed using the endosperm trait means of hybrid lines and the marker genotype information of parental plants (or lines). The feasibility and efficiency of the methods are examined by computer simulations. Results show that the methods can precisely map endosperm QTLs and unbiasedly and efficiently es- timate the three effects (additive effect, first dominant effect, second dominant effect) of endosperm QTLs.

关键词：胚乳 QTLs 随机杂化设计遗传模型

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Conditional QTL mapping of three yield components in common wheat(Triticum aestivum L.)

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The crop Journal 2016年第3期4卷 220-228页

作者： Han Zhang Jiansheng Chen Ruyu Li Zhiying Deng Kunpu Zhang Bin Liu Jichun Tian State Key Laboratory of crop Biology Ministry of Science and Technology/Key Laboratory of Crop Biology of Shandong ProvinceDepartment of Agronomy/Group of Wheat Quality BreedingShandong Agricultural University crop Research Institute Shandong Academy of Agricultural Sciences

Spike number per m^2(SN),kernel number per spike(KNPS) and thousand-kernel weight(TKW)are the three main components determining wheat(Triticum aestivum L.) *** evaluate the relationships among them a doubled haploid(DH) population consisting of 168 lines grown at three locations for three years was analyzed by unconditional and conditional QTL ***-three unconditional QTL and fifty-nine conditional QTL were *** them,two QTL(QSN-DH-2B and QSN-DH-3A-1.1) improved SN,with no effect on ***-DH-2B-2.1 improved KNPS,with no effect on ***-DH-1A-1.1,QKNPS-DH-2D-1.1and QKNPS-DH-6A improved KNPS,with no effect on SN or ***-DH-6B was associated with increased SN and *** addition,QTKW-DH-4B,QTKW-DH-5B and QTKW-DH-7B increased TKW without decreasing *** results provide useful information for marker assisted selection(MAS) and improvement in wheat yield.

关键词： Kernel number per spike QTL mapping Spike number per m^2 Thousand-kernel weight

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Transmission through Ag/Organic Multilayers Using Continuous and Island Metal Films

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Chinese Physics Letters 2011年第6期28卷 295-297页

作者： LI Heng ZHENG Ning School of Electronic and Optical Engineering Nanjing University of Science and TechnologyNanjing 210094 Key Laboratory of cluster science(Ministry of Education) Beijing Institute of TechnologyBeijing 100081

We present the results of transmission spectrum measurements of Ag/tetraphenyldiphenyldiamine periodic multilayers,as well as Ag/SiO2 in the visible and near IR spectral *** continuous silver films,these one-dimensional multilayers transmit visible light in controllable bands and stop IR *** island metal films,surface plasmon modes are excited,which exhibits broad absorption features covering the entire visible spectral *** work successfully extends the discussion of metal-dielectric one-dimensional photonic crystals to metal-organic cases and exhibits the linear optical properties of surface plasmon modes at the island metal/organic interface.

关键词： visible silver excited

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General and Exact Inbreeding Coefficient of Maize Synthetics Derived from Three-Way Line Hybrids

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Phyton-International Journal of Experimental Botany 2022年第1期91卷 33-43页

作者： Alejandro Ibarra-Sánchez Juan Enrique Rodríguez-Pérez Aureliano Peña-Lomelí Clemente Villanueva-Verduzco Jaime Sahagún-Castellanos crop science Department Chapingo Autonomus UniversityChapingo56230México

Synthetic varieties(SVs)are populations generated by randomly mating their *** are a good alternative for low-input farmers who grow onions,maize,and other allogamous crops since the seed produced by a SV does not change from one generation to the *** SV progenitors are commonly pure lines,in this case a synthetic(Syn_(TC))whose parents are t three-way line crosses,a very common type of maize hybrid grown in Mexico,is *** aim was to develop a general and exact equation for the inbreeding coefficient of a Syn_(TC)eF_(m)^(f)Syn_(TC)T because of its relationship with the mean of economically important *** objective arose due to the need for a more advanced study in terms of determining whether F_(m)^(f)Syn_(TC)can be applied specifically and accurately for any number of parents(t),plants per parent(m)and inbreeding coefficient(IC)of the initial lines(F_(L)).A formula for the IC of the Syn_(TC)was derived that,given any values of F_(L)(0≤F_(L)≤1)and t,is specific for any value of m,not just for“large”numbers associated with the context in which the Hardy-Weinberg law is *** was found that F_(m)^(f)Syn_(TC)is very sensitive to changes in m when m is not greater than eight,after which it tends to stabilize very *** summary,unlike previously derived formulas,F_(m)^(f)Syn_(TC)is exact for any values of t,m and F_(L).

关键词： Genotypic array genotypic mean hybrid random mating Zea mays L

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A new 4-Ti-added polyoxometalate

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Tungsten 2024年第2期6卷 465-471页

作者： Hai-Lou Li Chen Lian Guo-Yu Yang MOE Key Laboratory of cluster science School of Chemistry and Chemical EngineeringBeijing Institute of TechnologyBeijing 102488China

A new inorganic–organic hybrid 4-Ti-added polyoxometalate:[H_(2)N(CH_(3))_(2)]_(2)Na_(3)H_(5)[{Ti(C_(2)O_(4))(H_(2)O)}_(2){Ti(C_(2)O_(4))}_(2)(B-β-SbW_(9)O_(33))_(2)]·22H_(2)O(1)has been successfully made and further characterized by infrared spectroscopy,thermogravimetric analysis,powder X-ray diff raction and single-crystal X-ray diff *** polyoxoanion of 1 exhibits a Krebs-type structure that is constructed from two[B-β-SbW_(9)O_(33)]^(9)−fragments fused together by a belt of four additional Ti atoms decorated by oxalate ***,1 as a heterogeneous catalyst exhibits high activity for Knoevenagel condensation under mild reaction conditions.

关键词： Polyoxometalate Ti-added POM Krebs-type structure Knoevenagel condensation

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