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Asian Agricultural Research 2024年第4期16卷 33-36页

作者： Yinting NIU Le JU Peiyu CHEN Zhigang YIN Xuejie QIANG Junxia LI Nanyang Academy of Sciences Nanyang 473000China Institute of Cereal Crops Henan Academy of Agricultural SciencesZhengzhou 450002China

[Objectives]To find out a suitable cultivation technique of Wangu 098 in Nanyang area,speed up the popularization,demonstration and application of Wangu 098,and provide a theoretical and practical basis for adjusting the planting structure and realizing the matching of improved varieties and methods.[Methods]The new self-bred millet variety Wangu 098 was used as the material,and the two-factor split zone experimental design was *** effects of different sowing dates and densities on the yield,growth period and agronomic characters of millet were studied.[Results]The interaction of seeding date and density had a great effect on the yield and plant traits of *** yield was significantly and positively correlated with plant height,panicle length,single panicle weight,panicle grain weight and tiller number.[Conclusions]The reasonable combination of seeding date and density could give full play to the yield potential of *** to the experimental results and cultivation experience,the suitable seeding date of millet in Nanyang area is in the first and middle ten days of June,and the best density is about 750000 plants/***,after June 30,the seeding millet did not tiller,so the density should be increased to more than 900000 plants/ha to obtain higher *** terms of cultivation and management,timely seeding,reasonable close planting,and coordination of vegetative growth and reproductive growth can make the plant tall and strong,panicle long and thick,and improve the yield of millet.

关键词： Wangu 098 millet Seeding date Density Agronomic traits Yield

Statistical Prediction for Annual Start date and Duration of Sea-Ice Coverage at Qinhuangdao Observation Station

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Journal of Ocean University of China 2019年第6期18卷 1265-1272页

作者： JIAO Chunshuo ZHANG Wanlei DONG Sheng College of Engineering Ocean University of ChinaQingdao 266100China Qinhuangdao Marine Environmental Monitoring Central Station of SOA Qinhuangdao 066002China

Qinhuangdao City is located in the mid-latitude monsoon-affected region,and the timing of sea-ice coverage changes from year to year,making sea-ice forecasting *** this paper,we propose a statistical model using the 1980-2013 data collected at the Qinhuangdao observation *** start date and the duration of ice coverage are fitted with four marginal distributions,from which the best-fitted,i.e.,the Weibull distribution,is selected to form a joint probability density function(PDF),built by the Gaussian copula method,for the two *** a given start date forecast by the Gray-Markov model(GMM),the joint PDF becomes a conditional probability model,which predicts that the duration of ice coverage is most likely 33 days at the Qinhuangdao observation station in *** predicted duration value is only two days less than the actual *** results prove that the new prediction model is feasible and effective to predict the period of ice *** general sea-ice conditions that the sea ice would most likely form on December 8 and last for 80 days at the Qinhuangdao observation station could also be obtained from the joint *** statistical model provides a useful tool to forecast ice conditions for planning and management of maritime activities.

关键词： start date of sea ice duration of sea ice statistical prediction Weibull distribution Gaussian copula

A nucleotide substitution at the 5′ splice site of intron 1 of rice HEADING date 1(HD1) gene homolog in foxtail millet, broadly found in landraces from Europe and Asia

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The Crop Journal 2015年第6期3卷 481-488页

作者： Kenji Fukunaga Naoko Izuka Takehiro Hachiken Satoshi Mizuguchi Hidemi Ito Katsuyuki Ichitani Faculty of Life and Environmental Sciences Prefectural University of Hiroshima Faculty of Agriculture Kagoshima University

We investigated genetic variation of a rice HEADING date 1(HD1) homolog in foxtail ***, we searched for a rice HD1 homolog in a foxtail millet genome sequence and designed primers to amplify the entire coding sequence of the gene. We compared full HD1 gene sequences of 11 accessions(including Yugu 1, a Chinese cultivar used for genome sequencing) from various regions in Europe and Asia, found a nucleotide substitution at a putative splice site of intron 1, and designated the accessions with the nucleotide substitution as carrying a splicing variant. We verified by RT-PCR that this single nucleotide substitution causes aberrant splicing of intron 1. We investigated the geographical distribution of the splicing variant in 480 accessions of foxtail millet from various regions of Europe and Asia and part of Africa by d CAPS and found that the splicing variant is broadly distributed in Europe and Asia. Differences of heading times between accessions with wild type allele of the HD1 gene and those with the splicing variant allele were unclear. We also investigated variation in 13 accessions of ssp. viridis, the wild ancestor, and the results suggested that the wild type is predominant in the wild ancestor.

关键词： Foxtail millet Geographical distribution HD1(HEADING date 1) homolog Setaria italica Splice site

Mapping of Hd-6-2 for Heading date Using Two Secondary Segregation Populations in Rice

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Rice science 2018年第3期25卷 161-168页

作者： ZHANG Hua LIU Xu YANG Yongyi XUAN Ning YAO Fangyin Bio-Tech Research Center Shandong Academy of Agricultural Sciences

Heading date is one of the most important traits for rice adaption to different cultivation areas and crop seasons. In this study, two single segment substitution lines(SSSLs), W31-41-61-3-11-3-6-7(W31-SSSL) and W32-59-80-2-11-1-10(W32-SSSL) with substituted intervals derived from the donor parents IR66897 B(W31) and IR66167-27-5-1-6(W32), respectively, with Huajingxian 74(HTX74) were found to comprise a gene for extremely late-heading date, and the gene was tentatively designated as Hd-6-2. Two secondary F2 segregating populations were developed by crossing the two heterozygous SSSLs with HJX74 to map Hd-6-2 gene. According to phenotype analysis of the two mapping populations, the late heading date trait was controlled by a major recessive gene. In the segregation population derived from W31-SSSL, Hd-6-2 was mapped on chromosome 6 between PSM677 and RM204 with the genetic distances of 1.3 and 2.7 c M, respectively. In the population of W32-SSSL, the gene for heading date was mapped to the similar region as Hd-6-2 and co-segregated with PSM672. The sequence alignment of Hd3 a in the coding domains and promoter regions of HJX74 and W31-SSSL are completely consistent, whereas there was a great difference between W32-SSSL and HJX74, suggesting that Hd3 a could hardly be the main cause of the heading date variation in W31-SSSL, but it was probably the main reason for the change of heading stage in W32-SSSL.

关键词： rice single segment substitution line heading date gene mapping Hd3a

Effects of sowing date and ecological points on yield and the temperature and radiation resources of semi-winter wheat

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Journal of Integrative Agriculture 2023年第5期22卷 1366-1380页

作者： ZHANG Zhen-zhen CHENG Shuang FAN Peng ZHOU Nian-bing XING Zhi-peng HU Ya-jie XU Fang-fu GUO Bao-wei WEI Hai-yan ZHANG Hong-cheng Jiangsu Key Laboratory of Crop Cultivation and Physiology/Innovation Center of Rice Cultivation Technology in Yangtze Valley Ministry of Agriculture and Rural Affairs/Co-Innovation Center for Modern Production Technology of Grain CropsYangzhou UniversityYangzhou 225009P.R.China

Exploring the effects of sowing date and ecological points on the yield of semi-winter wheat is of great *** study aims to reveal the effects of sowing date and ecological points on the climate resources associated with wheat yield in the Rice–Wheat Rotation *** six sowing dates,the experiments were carried out in Donghai and Jianhu counties,Jiangsu Province,China using two semi-winter wheat varieties as the objects of this *** basic seedlings of the first sowing date (S1) were planted at 300×10^(4)plants ha^(-1),which was increased by 10%for each of the delayed sowing dates (S2–S6).The results showed that the delay of sowing date decreased the number of days,the effective accumulated temperature and the cumulative solar radiation in the whole growth *** yields of S1 were higher than those of S2 to S6 by 0.22–0.31,0.5–0.78,0.86–0.98,1.14–1.38,and 1.36–1.59 t ha^(–1),*** a given sowing date,the growth days increased as the ecological point was moved north,while both mean daily temperature and effective accumulative temperature decreased,but the cumulative radiation *** a result,the yields at Donghai County were 0.01–0.39 t ha–1lower than those of Jianhu County for the six sowing *** effective accumulative temperature and cumulative radiation both had significant positive correlations with *** average temperature was significantly negatively correlated with the *** decrease in grain yield was mainly due to the declines in grains per spike and 1 000-grain weight caused by the increase in the daily temperature and the decrease in the effective accumulative temperature.

关键词： wheat yield sowing date ecological point

Optimization of sowing date and seeding rate for high winter wheat yield based on pre-winter plant development and soil water usage in the Loess Plateau,China

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Journal of Integrative Agriculture 2019年第1期18卷 33-42页

作者： REN Ai-xia SUN Min WANG Pei-ru XUE Ling-zhu LEI Miao-miao XUE Jian-fu GAO Zhi-qiang YANG Zhen-ping College of Agriculture Shanxi Agricultural University

Sowing date and seeding rate are critical for productivity of winter wheat(Triticum aestivum L.).A three-year field experiment was conducted with three sowing dates(20 September(SD1),1 October(SD2),and 10 October(SD3)) and three seeding rates(SR67.5,SR90,and SR112.5) to determine suitable sowing date and seeding rate for high wheat yield.A large seasonal variation in accumulated temperature from sowing to winter dormancy was observed among three growing *** sowing dates for strong seedlings before winter varied with the seasons,that was SD2 in 2012–2013,SD3 in 2013–2014,and SD2 as well as SD1 in 2014–*** variation in precipitation during summer fallow also had substantial effects on soil water storage,and consequently influenced grain yield through soil water consumption from winter dormancy to maturity *** consumption of soil water from winter dormancy to booting stages could make more water available for productive growth from anthesis to maturity stages,leading to higher grain ***2 combined with SR90 had the lowest soil water consumption from winter dormancy to booting stages in 2012–2013 and 2014–2015; while in 2013–2014,it was close to that with SR67.5 or *** productive growth from anthesis to maturity stages,SD2 with SR90 had the highest soil water consumption in all three *** highest water consumption in the productive growth period resulted in the best grain yield in both low and high rainfall *** number largely contributed to the seasonal variation in grain yield,while grain number per ear and 1 000-grain weight also contributed to grain yield,especially when soil water storage was *** results indicate that sowing date and seeding rate affect grain yield through seedling development before winter and also affect soil water consumption in different growth *** selecting the suitable sowing date(1 October) in combination with the proper seeding rate of 90 kg ha–1,the best yield was achieved

关键词： accumulated temperature dry-land sowing date seeding rate soil water winter wheat yield components

Phoenix phylogeny, and analysis of genetic variation in a diverse collection of date palm(Phoenix dactylifera) and related species

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Plant Diversity 2019年第5期41卷 330-339页

作者： Srinivasa R.Chaluvadi Porter Young Kentrez Thompson Bochra Amina Bahri Bhavesh Gajera Subhash Narayanan Robert Krueger Jeffrey L.Bennetzen Department of Genetics University of GeorgiaAthensGAUSA Institute of Plant Breeding Genetics and Genomics(Department of Crop and Soil Sciences)and Department of Plant BiologyUniversity of GeorgiaAthensGA 30602USA Laboratory of Bioaggressors and Integrated Protection in Agriculture The National Agronomic Institute of TunisiaUniversity of Carthage43 Avenue Charles-NicolleTunis 1082Tunisia Anand Agricultural University AnandIndia USDA-ARS National Clonal Germplasm Repository for Citrus and dates RiversideCAUSA

date palm(Phoenix dactylifera),one of the most ancient crops,is grown commercially in>30 *** whole plastome assemblies,phylogenetic analyses revealed that cultivated date palm accessions share the same clade with Phoenix sylvestris,Phoenix pusilla and Phoenix acaulis,which are native to the Indian subcontinent,and Phoenix caespitosa that is native to the Arabian Peninsula and the deserts of *** of genetic diversity and genetic relationships among date palm accessions from 13 producing countries involved 195 date palm accessions that were genotyped at 19 microsatellite *** genetic diversity was observed,with many accessions heterozygous for most markers in this clonally propagated *** average number of alleles per locus(42.1),expected heterozygosity(0.8),observed heterozygosity(0.47)and fixation indices(FST=0.42)demonstrated substantial genetic diversity and population *** accessions were found to have the richest allelic diversity,and the most private *** model-based Bayesian method indicated that these accessions could be broadly divided into two structure groups,one group with predominantly African accessions and another predominantly *** germplasm,especially from Tunisia and Iraq,deviated from this *** accessions in the STRUCTURE-derived groups were found to be genetic admixtures,with gene flow between Asian and African *** and Pakistani date palms were found to be most closely related to North African germplasm.

关键词： date palm improvement Germplasm dissemination Plastome Simple sequence repeats

Evaluation of the CROPGRO-Peanut model in simulating appropriate sowing date and phosphorus fertilizer application rate for peanut in a subtropical region of eastern India

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作物学报：英文版 2017年第4期5卷 317-325页

作者： Debjani Halder Rabindra Kumar Panda Rajiv Kumar Srivastava Shyamal Kheroar Department of Agriculture Government of West Bengal Mathabhanga Cooch Behar 736 146 West Bengal India School of Infrastructure Indian Institute of Technology Bhubaneswar 751 013 Odisha India Agricultural and Food Engineering Department Indian Institute of Technology Kharagpur 721 302 West Bengal India Department of Agronomy Uttar Banga Krishi Viswavidyalaya Pundibari Cooch Behar 736 165 West Bengal India

Projected changes in weather parameters, mainly temperature and rainfall, have already started to show their effect on agricultural production. To cope with the changing scenarios, adoption of appropriate management strategies is of paramount importance. A study was undertaken to evaluate the most appropriate combination of sowing date and phosphorus fertilization level for peanut crops grown in sandy loam soil in a subhumid region of eastern India. Field experiments were conducted during the summer seasons of 2012 and 2013 on peanut crops at the farm of the Indian Institute of Technology, Kharagpur. The DSSAT v4.5 CROPGRO-Peanut model was used to predict the phenology, growth, and yield of peanut crop under combinations of four sowing dates and four phosphorus fertilization levels. The model was calibrated with a 2012 dataset of growth, phenology, and yield parameters for estimating the genetic coefficients of cultivar TMV-2 and was validated with a 2013 dataset of the same parameters. Simulations of pod yield and other yield parameters using the calibrated model were found to be quite accurate. The model was able to reasonably simulate pod yield and final biomass with low normalized root mean square error (RMSE_n), low absolute root mean square error (RMSE_a) and high coefficient of determination (R^2> 0.7) over a wide range of sowing dates and different phosphorus fertilization levels sensitivity analysis indicated that sowing from the second week of January to the end of February with 30–50 kg P_2O_5 ha^(-1)would give the highest pod yield.

关键词： Sowing date Phosphorus fertilizer CROPGRO-Peanut model Sensitivity analysis RMSE

Environmental assessment of date(Phoenix doctylifera)production in Iran by life cycle assessment

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Information Processing in Agriculture 2018年第3期5卷 388-393页

作者： Reza Hesampour Aboubakr Bastani Kobra Heidarbeigi Mechanical Engineering of Biosystems Department Ilam UniversityIlamIran

Environmental indicators have been considered as a main element of environmental impact assessments because of their role on decision and policy making in different fields of special environmental *** present study was conducted in order to evaluate date(Phoenix doctylifera)production in viewpoint of environmental indicators using life cycle assessment *** required information was collected by questionnaire and interview with farmers and experts in Khuzestan Province,*** SimaPro Software was used to calculate 11 different environmental indicators for producing one Tonne of the produced *** fuel,pesticides and nitrogen fertilizer had the highest shares in the studied environmental indicators.

关键词： date Life cycle assessment Emissions Environmental indicators Khuzestan

A date Recovery System launched for chronological studies in ancient China

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Science China(Physics,Mechanics & Astronomy) 2008年第1期51卷 105-110页

作者： LI Yong National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100012,China National Astronomical Observatories Chinese Academy of Sciences

Benefited from the performance of the Xia-Shang-Zhou Chronology Project(XSZP) in China and our new astronomical chronology method designed and processed for Chinese particular 60-day-cycle Ganzhi(the heavenly stems and earthly branches)date records,we launch a date Recovery System(DRS)for ancient China. Of high analysis function,this software can recover and convert the complete or incomplete date information originally from Ganzhi style in the historical period of China to the Gregorian Calendar System,which may have wide applications in the area of literary history,archaeology and cultural relic,etc.,and solve the Goldbach Puzzles of Chinese *** an example,we give the detailed process for the sculptures on four bronze wares with the Ganzhi data and afterwards employ this software and provide their possible dates corresponding to Gregorian system.

关键词： chronology date ephemeris software