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Effects of social and climatic factors on birth sex ratio in Macaca mulatta in Mount Taihangshan area

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Integrative Zoology 2015年第2期10卷 199-206页

作者： Jundong TIAN Baishi WANG Zhenlong WANG jindong liu Jiqi LU Institute of Biodiversity and Ecology Zhengzhou UniversityZhengzhouChina Jiyuan Administration of Taihangshan Macaque National Nature Reserve JiyuanChina Department of Wildlife Diseases Leibniz Institute for Zoo and Wildlife ResearchBerlinGermany

Sex allocation theory predicts the optimal investment to male and female ***,a biased sex ratio requires explanations as to why the deviation *** macaque(Macaca mulatta)is the most widely distributed nonhuman primate species and the Taihangshan macaque(Macaca mulatta tcheliensis)occupies the northern limit of all rhesus macaque natural populations *** observed one macaque troop(Wangwu-1[WW-1])inhabiting Taihangshan Macaque National Nature Reserve and recorded all birth events and the sex of newborn macaques from 2004 to *** aim was to apply the Trivers–Willard hypothesis to this free-ranging rhesus macaque troop,and to understand the relationship between climatic parameters(precipitation and temperature)and birth sex *** found that the total newborn macaques showed a female-biased sex ratio at birth in the WW-1 troop,but there were no significant biased birth sex ratios in all matriarchs and in high-ranking and middle-ranking matrilineal ***,the low-ranking macaque matrilineal unit was significantly ***,we found that the annual precipitation of the previous year was positively associated with the birth sex ratio,and there was an interactive effect of troop size and current winter temperature on the birth sex *** underlying mechanisms for the effects of social and climatic factors on birth sex ratio could be complex,and we discuss several plausible explanations.

关键词： birth sex ratio precipitation rhesus macaque social rank Trivers-Willard hypothesis

Transient Damping of Virtual Synchronous Generator for Enhancing Synchronization Stability during Voltage Dips

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CES Transactions on Electrical Machines and Systems 2024年第2期8卷 143-151页

作者： Shitao Sun Yu Lei Guowen Hao Yi Lu jindong liu Zhaoxin Song Jie Zhang North China Electric Power Research Institute Co. Ltd.Beijing 100045China State Grid Xinyuan Co. Ltd.Beijing 100761China Hebei Fengning Pumped Storage Energy Co.Ltd. Chengde 068350China

Virtual synchronous generators(VSGs)are widely introduced to the renewable power generation,the variablespeed pumped storage units,and so on,as a promising gridforming *** is noted that VSGs can provide virtual inertia for frequency support,but the larger inertia would worsen the synchronization stability,referring to keeping synchronization with the grid during voltage ***,this paper presents a transient damping method of VSGs for enhancing the synchronization stability during voltage *** is revealed that the loss of synchronization(LOS)of VSGs always accompanies with the positive frequency deviation and the damping is the key factor to remove LOS when the equilibrium point *** order to enhance synchronization stability during voltage dips,the transient damping is proposed,which is generated by the frequency deviation in active power ***,the proposed method can realize seamless switching between normal state and grid ***,detailed control design for transient damping gain is given to ensure the synchronization stability under different inertia requirements during voltage ***,the experimental results are presented to validate the analysis and the effectiveness of the improved transient damping method.

关键词： Virtual synchronous generator(VSG) Transient damping Synchronization stability Voltage dips

QTL mapping for pre-harvest sprouting in a recombinant inbred line population of elite wheat varieties Zhongmai 578 and Jimai 22

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The Crop Journal 2023年第3期11卷 863-869页

作者： Rabiu Sani Shawai Dan liu Lingli Li Tiantian Chen Ming Li Shuanghe Cao Xianchun Xia jindong liu Zhonghu He Yong Zhang Institute of Crop Sciences National Wheat Improvement CenterChinese Academy of Agricultural SciencesBeijing 100081China Department of Crop Science Faculty of Agriculture and Agricultural TechnologyKano University of Science and Technology WudilKano 713281Nigeria International Maize and Wheat Improvement Center(CIMMYT) China Officec/o CAASBeijing 100081China

Pre-harvest sprouting(PHS)is one of the serious global issues in wheat *** of quantitative trait loci(QTL)and closely-linked markers is greatly helpful for wheat *** the present study,a recombinant inbred line(RIL)population derived from the cross of Zhongmai 578(ZM578)/Jimai 22(JM22)and parents were phenotyped in five environments and genotyped by the wheat 50 K single-nucleotide polymorphism(SNP)*** QTL of germination index(GI),***-3A and ***-5A,were detected,explaining 4.33%–5.58%and 4.43%–8.02%of the phenotypic variances,*** resistant effect of ***-3A was contributed by JM22,whereas that of ***.5A was from *** two QTL did not correspond to any previously identified genes or genetic loci for PHSrelated traits according to their locations in the Chinese Spring reference genome,indicating that they are likely to be new loci for PHS *** kompetitive allele-specific PCR(KASP)markers K_AX-109605367and K_AX-179559687 flanking ***-3A,and K_AX-111258240 and K_AX-109402944flanking ***-5A,were developed and validated in a natural population of 100 wheat *** distribution frequency of resistance alleles at ***-3A and ***-5A loci were 82.7%and57.1%,respectively,in the natural *** findings provide new QTL and tightly linked KASP markers for improvement of PHS resistance in wheat.

关键词： Pre-harvest sprouting Germination index Quantitative trait loci KASP marker Triticum aestivum L.

Genome-wide association mapping of vitamins B1 and B2 in common wheat

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The Crop Journal 2018年第3期6卷 263-270页

作者： Jieyun Li jindong liu Wei'e Wen Pingzhi Zhang Yingxiu Wan Xianchun Xia Yan Zhang Zhonghu He Institute of Crop Science National Wheat Improvement CenterChinese Academy of Agricultural SciencesBeijing 100081China International Maize and Wheat Improvement Center(CIMMYT)China Office c/o CAASBeijing 100081China Crop Research Institute Anhui Academy of Agricultural SciencesHefei 230001AnhuiChina

Vitamin B is essential for maintaining normal life activities in humans and animals who have to intake the microelement from the outside, especially from cereal products. In the present study 166 Chinese and foreign wheat cultivars planted in two environments were characterized for variation in vitamin B1 and B2 contents. A genome-wide association study(GWAS) using the wheat 90 K SNP assay identified 17 loci for vitamin B1 and 7 for vitamin B2 contents. Linear regression analysis showed a significantly positive correlation of the number of favorable alleles with vitamin B1 and B2 contents. Marker-trait associations(MTAs) at IWB43809(6AS, 0cM) and IWB69903(6AS, 13cM) were new and stable, and significantly associated with vitamin B1 content across two environments. The loci identified in this study and associated SNP markers could be used for improvement of vitamin B1 and B2 contents to obtain superior quality along with grain yield in wheat.

关键词： 90 K SNP assay GWAS Vitamin B1 Vitamin B2 Triticum aestivum

Genome-Wide Association Study for Milled Grain Appearance Traits Using Multi-Parent Advanced Generation Intercross Population in Rice

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Rice science 2023年第5期30卷 364-368,I0007-I0012页

作者： LI Xiaoxiang liu jindong GUO Liang WEI Xiucai WANG Yamei PAN Xiaowu DONG Zheng liu Wenqiang liu Licheng MIN Jun liu Sanxiong YE Guoyou LI Yongchao Key Laboratory of Indica Rice Genetics and Breeding in the Middle and Lower Reaches of Yangtze River Valley Hunan Rice Research InstituteHunan Academy of Agricultural SciencesChangsha 410125China Crop Science Institute Chinese Academy of Agricultural SciencesBeijing 100081China Agricultural Genomics Institute Chinese Academy of Agricultural SciencesShenzhen 518120China Rice Breeding Innovations Platform International Rice Research InstituteMetro Manila DAPO Box 7777the Philippines

The identification of loci and markers associated with milled grain appearance traits is essential for breeding high-yielding and good-quality rice *** detect stable loci for these characteristics,grain length(GL),grain width(GW),grain length/width(GLW),chalkiness degree(CD),chalky-grain rate(CR)and translucency degree(TD)of 378 rice lines were evaluated in three *** lines were derived from a multi-parent advanced generation intercross(MAGIC)population.

关键词： breeding yielding Population

A 3D Simulator for Autonomous Robotic Fish

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International Journal of Automation and computing 2004年第1期1卷 42-50页

作者： jindong liu Huosheng Hu Department of Computer Science University of Essex Colchester UK

This paper presents a 3D simulator used for studying the motion control and autonomous navigation of robotic fish. The simulator’s system structure and computation flow are presented. Simplified kinematics and hydrodynamics models for a virtual robotic fish are proposed. Many other object models are created for water, obstacles, sonar sensors and a swimming pool. Experimental results show that the simulator provides a realistic and convenient way to develop autonomous navigation algorithms for robotic fish.

关键词： 3D simulator robotic fish autonomous navigation

Genetic variation of carotenoids in Chinese bread wheat cultivars and the effect of the 1BL.1RS translocation

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Frontiers of Agricultural Science and Engineering 2016年第2期3卷 124-130页

作者： Wenshuang LI Shengnan ZHAI Hui JIN Weie WEN jindong liu Xianchun XIA Zhonghu HE Institute of Crop Science/National Wheat Improvement Center Chinese Academy of Agricultural Sciences(CAAS) College of Agronomy Xinjiang Agricultural University International Maize and Wheat Improvement Center(CIMMYT) China Office c/o CAAS

Carotenoid content of wheat is an important criterion for prediction of the commercial and nutritional value of products made from bread wheat(Triticum aestivum) *** objective of this study was to determine the major components of carotenoids in Chinese wheat using ultra performance liquid chromatography(UPLC) including lutein,zeaxanthin,α-carotene andβ-*** carotenoid content was investigated in217 cultivars from three major Chinese wheat regions and from seven other countries grown in two *** contributed to the majority of variation in carotenoid ***,zeaxanthin and β-carotene concentrations varied from 18.3 to 100.1,4.9 to 12.0 and0.9 to 48.7 μg per 100 g in wheat flour with an average of40.2,7.2 and 18.2 μg per 100 g,***(61.3%) was the main carotenoid component,followed byβ-carotene(27.7%) and zeaxanthin(11.0%).No α-carotene was *** carotenoids,lutein,zeaxanthin andβ-carotene were all higher in cultivars with the 1BL.1RS translocation compared to those without the *** is the first report on assay of lutein,zeaxanthin andβ-carotene concentrations for a large number of wheat *** data will be useful for genetic improvement of wheat carotenoid content and for understanding of the carotenoid biosynthetic pathway in wheat.

关键词： Triticum aestivum carotenoids nutritional quality UPLC