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A growth-regulating factor 7(GRF7)-mediated gene regulatory network promotes leaf growth and expansion in sugarcane
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作者 Qiaoyu Wang Yihan Li +5 位作者 Dadong Lin Xiaoxi Feng Yongjun Wang Tianyou Wang Hongyan Ding Jisen Zhang 《The Crop Journal》 SCIE CSCD 2024年第2期422-431,共10页
Knowledge of the function of growth-regulating factors(GRFs)in sugarcane(Saccharum officinarum and S.spontaneum)growth and development could assist breeders in selecting desirable plant architectures.However,limited i... Knowledge of the function of growth-regulating factors(GRFs)in sugarcane(Saccharum officinarum and S.spontaneum)growth and development could assist breeders in selecting desirable plant architectures.However,limited information about GRFs is available in Saccharum due to their polyploidy.In this study,22 GRFs were identified in the two species and their conserved domains,gene structures,chromosome location,and synteny were characterized.GRF7 expression varied among tissues and responded to diurnal rhythm.SsGRF7-YFP was localized preferentially in the nucleus and appears to act as a transcriptional cofactor.SsGRF7 positively regulated the size and length of rice leaves,possibly by regulating cell size and plant hormones.Of seven potential transcription factors binding to the SsGRF7 promoter in S.spontaneum,four showed positive expression patterns,and two showed negative expression patterns relative to SsGRF7. 展开更多
关键词 Expression analysis Growth-regulating factor Leaf development sugarcane Transcription factors
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Sugarcane leaves-derived polyphenols alleviate metabolic syndrome and modulate gut microbiota of ob/ob mice
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作者 Li Sun Tao Wang +8 位作者 Baosong Chen Cui Guo Shanshan Qiao Jinghan Lin Huan Liao Huanqin Dai Bin Wang Jingzu Sun Hongwei Liu 《Food Science and Human Wellness》 SCIE CSCD 2024年第2期633-648,共16页
Sugarcane leaves-derived polyphenols(SLP)have been demonstrated to have diverse health-promoting benefits,but the mechanism of action has not been fully elucidated.This study aimed to investigate the anti-metabolic di... Sugarcane leaves-derived polyphenols(SLP)have been demonstrated to have diverse health-promoting benefits,but the mechanism of action has not been fully elucidated.This study aimed to investigate the anti-metabolic disease effects of SLP and the underlying mechanisms in mice.In the current study,we prepared the SLP mainly consisting of three flavonoid glycosides,three phenol derivatives,and two lignans including one new compound,and further demonstrated that SLP reduced body weight gain and fat accumulation,improved glucose and lipid metabolism disorders,ameliorated hepatic steatosis,and regulated short-chain fatty acids(SCFAs)production and secondary bile acids metabolism in ob/ob mice.Notably,SLP largely altered the gut microbiota composition,especially enriching the commensal bacteria Akkermansia muciniphila and Bacteroides acidifaciens.Oral gavage with the above two strains ameliorated metabolic syndrome(MetS),regulated secondary bile acid metabolism,and increased the production of SCFAs in high-fat diet(HFD)-induced obese mice.These results demonstrated that SLP could be used as a prebiotic to attenuate MetS via regulating gut microbiota composition and further activating the secondary bile acids-mediated gut-adipose axis. 展开更多
关键词 sugarcane leaves-derived polyphenols Metabolic syndrome Bacteroides acidifaciens Akkermansia muciniphila Secondary bile acids metabolism
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Chemically Modified Sugarcane Bagasse for Innovative Bio-Composites. Part One: Production and Physico-Mechanical Properties
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作者 Peyman Ahmadi Davood Efhamisisi +3 位作者 Marie-France Thévenon Hamid Zarea Hosseinabadi Reza Oladi Jean Gerard 《Journal of Renewable Materials》 EI CAS 2024年第10期1715-1728,共14页
Sugarcane bagasse is an agro-waste that could replace timber resources for the production of bio-composites.Composite boards such as particleboard offer an issue for the use and recycling of poor quality timber,and th... Sugarcane bagasse is an agro-waste that could replace timber resources for the production of bio-composites.Composite boards such as particleboard offer an issue for the use and recycling of poor quality timber,and these engineered products can overcome some solid wood limitations such as heterogeneity and dimension.Bagasse offers an alternative to wood chips for particleboard production but present some disadvantages as well,such as poor physico-mechanical properties.To address these issues,bagassefibers were treated with an innovative natural resin formulated with tannin and furfural.Impregnated particles with different concentrations of resin(5%,10%,and 15%m/m)were exposed to temperatures of 40°C,60°C,80°C,and 100°C for resin curing.Various types of tannin-based adhesives,including tannin formaldehyde,tannin/formaldehyde-furfural,and tannin hex-amine,were utilized for bonding the treated bagasse particles.The resultant panels were assessed for their physical and mechanical properties and compared to those produced using Melamine-Urea-Formaldehyde(MUF)adhe-sive.The density of the panels varied from 650 to 730 kg/m3 depending on the resin concentration.The values for both modulus of elasticity and modulus of rupture increased as the resin concentration increased.The internal bonding values exhibited an increase with resin concentration up to a critical point,after which a decreasing trend was observed.The water absorption and thickness swelling were significantly reduced with an increase in resin concentration.However,the panels produced using MUF adhesive yielded the most favorable physico-mechanical properties.Additionally,the panels made with tannin-based adhesives met the minimum requirements specified in the standard EN 312(specifications for uncoated resin-bonded particleboards)for application in dry condi-tions.The analysis of formaldehyde emissions indicated that panels produced with tannin-based adhesives exhib-ited significantly lower emissions compared to those made with MUF.The tannin/furfural resin showed great potential for improving the quality of bagasse particleboard using tannin-based adhesives. 展开更多
关键词 sugarcane bagasse PARTICLEBOARD TANNIN FURFURAL physico-mechanical properties FORMALDEHYDE
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Assessment of Physico-Chemical and Microbial Quality of Sugarcane Juice Sold by Street Vendors in Three Regions of Bangladesh
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作者 Nargis Akter Khan Md. Murtaja Reza Linkon +5 位作者 Munni Akter Md. Alamgir Hossain Md. Mahbubur Rahman Tayeba Khan Md. Abdul Alim Md. Esrafil 《Food and Nutrition Sciences》 CAS 2024年第4期263-276,共14页
Sugar cane juice is a popular refreshing drink in most part of Bangladesh. It has great taste and health benefits;also it is available most of the public places at reasonable prices which consumed by road side custome... Sugar cane juice is a popular refreshing drink in most part of Bangladesh. It has great taste and health benefits;also it is available most of the public places at reasonable prices which consumed by road side customers including general public, shopping personals, tourists, students. In our country, street vendors crushing sugarcane between roller crusher and sold without any heat treatment or preservative, also served with or without added ice and lemon juice. The study aimed to identify and compare the physico-chemical and microbial quality of sugarcane juice. The chemical qualities of juices including moisture, P<sup>H</sup>, ash, total soluble solid, total sugar, reducing sugar and titrable acidity were found slightly different in Mymensingh, Gazipur and Narayangonj areas. The highest and lowest value of moisture, ash, P<sup>H</sup>, total soluble solids, total sugar, reducing sugar and titrable acidity were found in 84.33% - 79.26% (Gazipur-Mymensingh), 0.57% - 0.04% (Mymensingh-Gazipur), 5.9 - 2.9 (Gazipur-Narayangonj), 17.48% - 4.98% (Mymensingh-Narayangonj), 21.9% - 6.56% (Mymensingh-Gazipur), 3.7 - 2.1 (Gazipur-Mymensingh) and 0.523% - 0.007% (Narayangonj-Gazipur) respectively. For microbiological analysis, the total viable count of sugar cane juice in Mymensingh, Gazipur and Narayangonj were ranged from 0.6 × 10<sup>5</sup> - 43.6 × 10<sup>5</sup> cfu/ml, 4.6 × 10<sup>5</sup> - 21.6 × 10<sup>5</sup> cfu/ml and 3.6 × 10<sup>5</sup> - 36.6 × 10<sup>5</sup> cfu/ml respectively, where the permitted value is 1.0 × 10<sup>4</sup> cfu/ml, whereas the total coliform count was ranged from 0.4 × 10<sup>5</sup> - 6.4 × 10<sup>5</sup> cfu/ml, 0.6 × 10<sup>5</sup> - 8.4 × 10<sup>5</sup> cfu/ml and 0.00 - 8.4 × 10<sup>5</sup> cfu/ml, where the permitted value is 100 cfu/ml and total fungal count was ranged from 5.5 × 10<sup>5</sup> - 56.5 × 10<sup>5</sup> cfu/ml, 21.5 × 10<sup>5</sup> - 54.5 × 10<sup>5</sup> cfu/ml and 32.5 × 10<sup>5</sup> - 68.5 × 10<sup>5</sup> cfu/ml, where the permitted value is 1000 cfu/ml. According to the Gulf standard, the microbiological parameters of all the collected sugar cane juice were out of the permitted standards, so that a serious health outbreak can be caused anytime. 展开更多
关键词 sugarcane Street Vendors Microbial Quality Reducing Sugar
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Analysis of Occurrence and Mixed Infection of Sugarcane Bacilliform Virus Disease in Hainan Sugarcane-growing Area
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作者 Linbo SHEN Shuzhen ZHANG +3 位作者 Tingting SUN Guoru XIONG Meidan HE Wenzhi WANG 《Plant Diseases and Pests》 2024年第3期8-11,48,共5页
[Objectives]The paper was to explore the occurrence and mixed infection of sugarcane bacilliform virus disease in Hainan sugarcane-growing area.[Methods]A total of 348 sugarcane leaf samples were collected from 7 suga... [Objectives]The paper was to explore the occurrence and mixed infection of sugarcane bacilliform virus disease in Hainan sugarcane-growing area.[Methods]A total of 348 sugarcane leaf samples were collected from 7 sugarcane-growing areas in Hainan Province.Molecular detection of sugarcane bacilliform virus(SCBV)was carried out by PCR using specific primers.[Results]SCBV was detected in 244 out of 348 sugarcane samples,with an average detection rate of 70.11%.The highest detection rate was 76.66%in the Danzhou sugarcane-growing area,while the lowest was 57.14%in the Baisha sugarcane-growing area.The SCBV-positive samples were subjected to testing for SCYLV,SCSMV,SrMV,and SCMV,respectively.The results indicated that 106 out of 244 positive samples exhibited a single infection with SCBV,while 138 samples exhibited mixed infections with SCBV and other sugarcane viruses.The proportion of mixed infections among the SCBV-positive samples was as high as 56.56%.Among the various types of mixed infections,two-virus and three-virus mixed infections were the most prevalent.[Conclusions]SCBV has emerged as a significant threat to the secure production of sugarcane in the Hainan sugarcane-growing region.It presents an explosive infection in the Hainan sugarcane-growing region and frequently combines with other sugarcane viruses to infect sugarcane.The findings of this study will provide a theoretical foundation for the prevention and control of sugarcane bacilliform virus disease. 展开更多
关键词 sugarcane sugarcane bacilliform virus disease Detection rate Mixed infection
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Establishment and Application of Prevention and Control Techniques of New Sugarcane White Leaf Disease
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作者 Xiaoyan WANG Ruonan QIU +8 位作者 Hong XU Yulong JIANG Rongyue ZHANG Fengyun ZHANG Ming GONG Jinxue LEI Hongli SHAN Jie LI Yingkun HUANG 《Agricultural Biotechnology》 2024年第4期18-20,27,共4页
Aiming at the basic and key technical problems in prevention and control of sugarcane white leaf disease(SCWL),this study systematically overcame key technical bottleneck of prevention and control of new SCWL after 10... Aiming at the basic and key technical problems in prevention and control of sugarcane white leaf disease(SCWL),this study systematically overcame key technical bottleneck of prevention and control of new SCWL after 10 years of collaborative research,and achieved several innovative achievements.SCWL phytoplasmas newly recorded in China and the new subgroup of SCWL phytoplasmas(16SrXI-D)were discovered for the first time in Yunnan,and the whole genome analysis of the epidemic subgroup was completed.The main transmission source of SCWL pathogens has been identified as infected seed canes,and Tettigoniella viridis and Clovia conifer were newly discovered as vectors for virus transmission.The disease resistance of 25 main varieties was identified,and 10 control varieties were selected.The prevention and control strategy of"emphasizing early warning,strictly carrying out quarantine,blocking the vectors and controlling residual plants"was put forward,and a comprehensive prevention technique was established through integration of various techniques,and standardized technical regulations were formulated for demonstration application.The promotion and application of these achievements have realized scientific prevention and control of SCWL,effectively curbed the spread of SCWL,and ensured the safety of sugarcane producing areas in China,achieving great economic,social and ecological benefits and providing technical support for high-quality development,loss reduction and efficiency improvement of China's sugar industry. 展开更多
关键词 sugarcane white leaf disease Comprehensive prevention and control APPLICATION
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Past and recent advances in sugarcane cytogenetics
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作者 Kai Wang Hui Zhang +4 位作者 Haris Khurshid Ayman Esh Caiwen Wu Qinnan Wang Nathalie Piperidis 《The Crop Journal》 SCIE CSCD 2023年第1期1-8,共8页
The Saccharum genus comprises species with large and variable chromosome numbers, leading to challenges in genomic studies and breeding improvement. Cytogenetics, including classical and molecular approaches, has play... The Saccharum genus comprises species with large and variable chromosome numbers, leading to challenges in genomic studies and breeding improvement. Cytogenetics, including classical and molecular approaches, has played a central role in deciphering the genome structure, classification, and evolution of the genus Saccharum. The application of fluorescence in situ hybridization using oligonucleotide probes significantly improved our understanding of the complex genomes of Saccharum species. This paper reviews the application and progress of cytogenetic techniques in Saccharum. Future applications of cytogenetics are discussed, as they could benefit both genomic studies and breeding of sugarcane as well as other plants with complex genomes. 展开更多
关键词 CYTOGENETICS sugarcane FISH CHROMOSOME Oligo-FISH
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Overexpression of a sugarcane ScCaM gene negatively regulates salinity and drought stress responses in transgenic Arabidopsis thaliana
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作者 JINXIAN LIU JINGFANG FENG +8 位作者 CHANG ZHANG YONGJUAN REN WEIHUA SU GUANGHENG WU XIANYU FU NING HUANG YOUXIONG QUE HUI LING JUN LUO 《BIOCELL》 SCIE 2023年第1期215-225,共11页
Calmodulin(CaM)proteins play a key role in signal transduction under various stresses.In the present study,the effects of a sugarcane ScCaM gene(NCBI accession number:GQ246454)on drought and salt stress tolerance in t... Calmodulin(CaM)proteins play a key role in signal transduction under various stresses.In the present study,the effects of a sugarcane ScCaM gene(NCBI accession number:GQ246454)on drought and salt stress tolerance in transgenic Arabidopsis thaliana and Escherichia coli cells were evaluated.The results demonstrated a significant negative role of ScCaM in the drought and salt stress tolerance of transgenic lines of A.thaliana,as indicated by the phenotypes.In addition,the expression of AtP5CS and AtRD29A,two genes tightly related to stress resistance,was significantly lower in the overexpression lines than in the wild type.The growth of E.coli BL21 cells expressing ScCaM showed weaker tolerance under mannitol and NaCl stress.Taken together,this study revealed that the ScCaM gene plays a negative regulatory role in both mannitol and NaCl stresses,and it possibly exerts protective mechanisms common in both prokaryotes and eukaryotes under stress conditions. 展开更多
关键词 Calmodulin(CaM) Signal transduction Drought Salt stress sugarcane
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Establishment and Application of Identification Methods for Resistance to Sugarcane White Leaf Disease(SCWL)
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作者 Wenfeng LI Rongyue ZHANG +4 位作者 Xiaoyan WANG Hongli SHAN Jie LI Yinhu LI Yingkun HUANG 《Agricultural Biotechnology》 CAS 2023年第1期12-15,共4页
[Objectives]This study was conducted to establish simple, efficient, stable, standardized and practical identification methods for sugarcane resistance to white leaf disease(SCWL), and promote the breeding for sugarca... [Objectives]This study was conducted to establish simple, efficient, stable, standardized and practical identification methods for sugarcane resistance to white leaf disease(SCWL), and promote the breeding for sugarcane resistance to SCWL. [Methods]The identification technology of sugarcane resistance to SCWL was systematically studied and explored from the aspects of sugarcane material treatment and planting, inoculation liquid preparation, inoculation method, disease investigation, grading standard formulation, etc., and two sets of simple, efficient, stable, standardized and practical accurate identification methods for sugarcane resistance to SCWL were created for the first time, namely, the seed cane coating inoculation method and the stem-cutting inoculation method at the growth stage. The seed cane coating inoculation method includes the steps of directly screening SCWL phytoplasma, extracting juice from cane and adding 10 times of sterile water to prepare an inoculation liquid, spraying seed cane on plastic film to keep moisture, planting the inoculated materials in barrels in an insect-proof greenhouse for cultivation, investigating the incidence rate 30 d after inoculation, and evaluating the disease resistance according to the 1-5 level standard. The method of stem-cutting inoculation includes the steps of directly screening sugarcane stems carrying SCWL phytoplasma and adding 10 times of sterile water to prepare an inoculation liquid, cultivating the identification materials in an insect-proof greenhouse, dropping 100 μl of the inoculation liquid into each root incision with a pipette gun at the age of 6 months, investigating the incidence rate 20 d after planting, and evaluating the disease resistance according to the 1-5 level standard. [Results] The two methods are similar to the natural transmission method. After inoculation, SCML occurred significantly, with high sensitivity and good reproducibility. The results of resistance identification were consistent with those of natural disease in the field. Through the two inoculation methods and field natural disease investigation, the resistance of 10 main cultivars to SCML was identified, which was true and reliable. [Conclusions] This study can provide standard varieties for identification of SCML resistance in the future. 展开更多
关键词 sugarcane white leaf disease Inoculation technology Seed cane-spraying inoculation Stem-cutting inoculation method Identification of disease resistance
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Effectiveness of Rice Husk and Sugarcane Bagasse Ashes Blended Cement in Improving Properties of Concrete
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作者 Johnson Adegaye Adebola Catherine Mayowa Ikumapayi Chinwuba Arum 《Journal of Materials Science and Chemical Engineering》 2023年第8期1-19,共23页
This paper emphasized the use of rice husk ash (RHA) and sugarcane bagasse ash (SBA) in improving concrete properties, and also their combined effects on workability, compressive strength, flexural strength, permeabil... This paper emphasized the use of rice husk ash (RHA) and sugarcane bagasse ash (SBA) in improving concrete properties, and also their combined effects on workability, compressive strength, flexural strength, permeability and water absorption capacity. Thus, in this study, the water-to-cement ratio was kept constant (0.45), the binder materials content for conventional mix was kept constant at (350 kg/m<sup>3</sup>) and the partial replacement of cement with RHASBA used was 5%, 10%, 15%, 20%, 25%, and 30% by weight of cement. The maximum compressive strength was noted at a 5% replacement level of cement with RHASBA. The Results showed that the optimum replacement of cement with RHASBA in concrete was 5%, which was found to increase the compressive strength by 15%, flexural strength by 3.4%, lowered permeability by 50%, lowered sorptivity by 11.34% as compared with control concrete at 90 days of curing time. The micro-structural test results further established that RHA and SBA have a high content of SiO<sub>2</sub> which enables them to be more reactive in concrete and also revealed that the presence of RHASBA depletes Ca(OH)<sub>2</sub> crystals, converting it into CaH<sub>2</sub>O<sub>4</sub>Si (C-S-H gel) leading to the strengthening of bond within the concrete matrix. 展开更多
关键词 Concrete Rice Husk Ash sugarcane Bagasse Ash Compressive Strength PERMEABILITY SORPTIVITY
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Climate Impact on the Productivity of Sugarcane Varieties in Ferke1 Industrial Plantations
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作者 Sinali Dosso Fidèle Yoroba +4 位作者 Benjamin Kouassi Kouakou Kouadio Adama Diawara Arsène Kobea Arona Diedhiou 《Agricultural Sciences》 2023年第7期954-976,共23页
This study assesses the climate impact on the productivity of five sugarcane varieties (R579, SP711406, M2593/92, M1400/86, and SP701006) in the industrial plantations of Ferké 1 sugar complex. It is a contributi... This study assesses the climate impact on the productivity of five sugarcane varieties (R579, SP711406, M2593/92, M1400/86, and SP701006) in the industrial plantations of Ferké 1 sugar complex. It is a contribution to research efforts aimed at increasing the productivity of sugarcane varieties in the sugar fields. Also to support agricultural development and guarantee the income of planters. The sugarcane production data are from 2013 to 2017. Climatological data are measured and calculated continuously daily at the production site. In addition, the CMIP-5 (Coupled Model Intercomparison Project) climate database at 1<sup></sup><sup>º </sup>× 1<sup>º</sup> horizontal resolution was used for the predictability of crop yields of the 5 sugarcane varieties in the near future (2021-2050) and far future (2056-2075) to improve the quality of climate services to producers. The statistical methodological approach by multiple linear regression associated with the significativity test shows important and significant coefficients of determination (R<sup>2</sup> > 0.90) between the yields of sugarcane varieties with certain climatic parameters such as minimum and maximum temperatures, insolation, global solar radiation, and potential evapotranspiration. The impact of rainfall has not been directly evaluated because the linear models do not explicitly show sensitivities to this parameter and the total water requirements for the plot are completely assured by irrigation. The future climate projections analyzed only from extreme thermal parameters (Tmax and Tmin) highlight their strong sensitivities with yields from an idealized model. In this model, we have assumed that the water supply needed by sugarcane is always met by irrigation on different plots. Moreover, linear models do not evolve fast enough in time and changes due to external environmental constraints are not too important at the plot scale. The projected thermic parameters can thus constitute a limiting factor for the producibility of sugarcane varieties either by excess or by default. In addition, the linear models used allowed us to observe the behavior of yields with respect to observed past climatic conditions. However, for future yields, there is no way to know if these regressions have the ability to predict them since they are based on projected weather conditions (i.e. CMIP5 data) marked by uncertainties. Additionally, none of the regression equations have been tested against independent observations. 展开更多
关键词 Climate Parameters Projections YIELD sugarcane Ferkessédougou
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Evaluation of global gridded crop models in simulating sugarcane yield in China 被引量:1
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作者 Dezhen Yin Jingjing Yan +1 位作者 Fang Li Tianyuan Song 《Atmospheric and Oceanic Science Letters》 CSCD 2023年第2期49-54,共6页
中国是全球第三大甘蔗生产国,中国甘蔗产量模拟可服务于全球食糖和乙醇的生产和贸易.全球格点作物模式CLM5-crop和LPJmL已实现对甘蔗的模拟,但它们在中国的模拟能力未知.本文评估结果表明:两个模式均严重低估了甘蔗产量,模拟均不足观测... 中国是全球第三大甘蔗生产国,中国甘蔗产量模拟可服务于全球食糖和乙醇的生产和贸易.全球格点作物模式CLM5-crop和LPJmL已实现对甘蔗的模拟,但它们在中国的模拟能力未知.本文评估结果表明:两个模式均严重低估了甘蔗产量,模拟均不足观测的1/4.CLM5-crop能有技巧地模拟产量的空间分布特征,而LPJmL不能.两个模式均不能合理模拟产量的年际变化,且低估了产量的上升趋势.模式低估甘蔗产量的部分原因是模式假设收割的是甘蔗的穗而非茎. 展开更多
关键词 全球格点作物模式 模式评估 甘蔗 产量 中国
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Influence of Climate on Sugarcane Yield in Côte d’Ivoire: Case of the Ferkessédougou Region
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作者 Sinali Dosso Arsène Kobea +4 位作者 Fidèle Yoroba Benjamin Kouassi Kouakou Kouadio Adama Diawara Arona Diedhiou 《Atmospheric and Climate Sciences》 2023年第4期565-586,共22页
This study aims to understand the current climatic trends and explain the possible losses of agricultural yields. To achieve this objective, this work characterized the evolution of extreme temperature indices in the ... This study aims to understand the current climatic trends and explain the possible losses of agricultural yields. To achieve this objective, this work characterized the evolution of extreme temperature indices in the sugar complexes of Ferké 1 and Ferké 2, two stations located in the northern part of C?te d'Ivoire. The onset and cessation dates of the rainy season and the length of the rainy season were investigated. The agricultural and climatic data were obtained from each sugar complex. The period of study ranges from 2002 to 2019 in Ferké 1 and Ferké 2. The results show significant upward trends in extreme temperature indices. The analysis of sugarcane yield associated with the different climatic parameters shows no significant results in general. However, on the Ferkessédougou sugar complexes, the results highlight that maximum and minimum temperatures could be the variables that influence most yield production. The maximum temperature with coefficients of 1.60 and 0.77 at Ferké 1 and Ferké 2 respectively seems to contribute to an increase in yield while the minimum temperature with coefficients of -0.98 and -0.22 at Ferké 1 and Ferké 2 respectively could lead to a loss in yield. The results obtained with the Single Linear Regression (SLR) and the Multiple Linear Regression (MLR) models also highlight the strong influence of minimum and maximum temperatures. 展开更多
关键词 Onset and Cessation Dates DURATION RAINFALL Temperature Climatic Indices sugarcane Yield Ferké 1 Ferké 2
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Effectiveness of Rice Husk and Sugarcane Bagasse Ashes Blended Cement in Improving Properties of Concrete
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作者 Johnson Adegaye Adebola Catherine Mayowa Ikumapayi Chinwuba Arum 《Journal of Modern Physics》 2023年第8期1-19,共10页
This paper emphasized the use of rice husk ash (RHA) and sugarcane bagasse ash (SBA) in improving concrete properties, and also their combined effects on workability, compressive strength, flexural strength, permeabil... This paper emphasized the use of rice husk ash (RHA) and sugarcane bagasse ash (SBA) in improving concrete properties, and also their combined effects on workability, compressive strength, flexural strength, permeability and water absorption capacity. Thus, in this study, the water-to-cement ratio was kept constant (0.45), the binder materials content for conventional mix was kept constant at (350 kg/m<sup>3</sup>) and the partial replacement of cement with RHASBA used was 5%, 10%, 15%, 20%, 25%, and 30% by weight of cement. The maximum compressive strength was noted at a 5% replacement level of cement with RHASBA. The Results showed that the optimum replacement of cement with RHASBA in concrete was 5%, which was found to increase the compressive strength by 15%, flexural strength by 3.4%, lowered permeability by 50%, lowered sorptivity by 11.34% as compared with control concrete at 90 days of curing time. The micro-structural test results further established that RHA and SBA have a high content of SiO<sub>2</sub> which enables them to be more reactive in concrete and also revealed that the presence of RHASBA depletes Ca(OH)<sub>2</sub> crystals, converting it into CaH<sub>2</sub>O<sub>4</sub>Si (C-S-H gel) leading to the strengthening of bond within the concrete matrix. 展开更多
关键词 Concrete Rice Husk Ash sugarcane Bagasse Ash Compressive Strength PERMEABILITY SORPTIVITY
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中糖2号在国家第13轮甘蔗品种区试的综合评价 被引量:2
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作者 甘仪梅 杨本鹏 +3 位作者 蔡文伟 曹峥英 武媛丽 彭李顺 《种子》 北大核心 2024年第4期131-135,156,共6页
为研究甘蔗新品种中糖2号在全国各个蔗区的适应性,中糖2号参加了2018—2020年在全国5省区18个区试点开展全国甘蔗新品种第13轮联合区试1年新植2年宿根区域试验。结果表明,以全国18个区试点的数据结果统计,1年新植2年宿根平均蔗产量6734 ... 为研究甘蔗新品种中糖2号在全国各个蔗区的适应性,中糖2号参加了2018—2020年在全国5省区18个区试点开展全国甘蔗新品种第13轮联合区试1年新植2年宿根区域试验。结果表明,以全国18个区试点的数据结果统计,1年新植2年宿根平均蔗产量6734 kg/667 m^(2),比对照ROC22增产11.16%,14点次增产;平均含糖量957 kg/667 m^(2),比对照ROC22增产7.29%,12点次增产;11—12月平均甘蔗蔗糖分为13.67%,1—3月平均甘蔗蔗糖分为15.30%,全期平均甘蔗蔗糖分为14.52%,比ROC22低0.20个百分点。第1年新植蔗产量6598 kg/667 m^(2),平均含糖量900 kg/667 m^(2),全期平均甘蔗蔗糖分13.57%;第1年宿根平均蔗产量6693 kg/667 m^(2),比ROC22增产15.66%,平均含糖量1017 kg/667 m^(2),比ROC22增产13.25%,全期平均甘蔗蔗糖分15.28%;第2年宿根平均蔗产量6963 kg/667 m^(2),比ROC22增产26.53%,平均含糖量952 kg/667 m^(2),比对照ROC22增产17.10%,全期平均甘蔗蔗糖分为14.75%。平均甘蔗纤维分为11.80%,比对照ROC22高0.70个百分点。通过人工接种鉴定对黑穗病的抗性级别为1级,抗性反应型为高抗;对花叶病的抗性级别为2级,抗性反应型为高抗。中糖2号高抗黑穗病,适宜机械收获。 展开更多
关键词 甘蔗 区域试验 蔗茎产量 蔗糖产量
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青贮甘蔗梢替代玉米秸秆对湖羊生长性能、消化代谢及肉品质的影响 被引量:2
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作者 李娟 于晓青 +4 位作者 马键宇 邓凯平 冯旭 郑健 樊懿萱 《南京农业大学学报》 CAS CSCD 北大核心 2024年第2期351-358,共8页
[目的]本试验旨在探索青贮甘蔗梢替代青贮玉米秸秆作为肉羊日粮的可行性,并确定最佳的替代比例。[方法]选取3月龄、体重相近[(20.15±2.18)kg]的健康湖羊公羔48只,随机分成4组,每组3个重复,分别用青贮甘蔗梢替代0%(对照组)、50%(A组... [目的]本试验旨在探索青贮甘蔗梢替代青贮玉米秸秆作为肉羊日粮的可行性,并确定最佳的替代比例。[方法]选取3月龄、体重相近[(20.15±2.18)kg]的健康湖羊公羔48只,随机分成4组,每组3个重复,分别用青贮甘蔗梢替代0%(对照组)、50%(A组)、75%(B组)、100%(C组)青贮玉米秸秆饲喂,预试期10 d,正试期为60 d。试验开始和结束时测定湖羊生产性能,并采集血液样品进行血清生化分析;饲喂试验结束后,从每组不同重复各选择1只湖羊屠宰,测定其屠宰性能及肉品质;从每组不同重复再挑选3只湖羊进行消化代谢试验,测定养分消化代谢参数。[结果]B组和C组平均日增重、胴体重和屠宰率显著高于A组和对照组(P<0.05);B组和C组氮沉积量显著高于A组和对照组,A组、B组和C组的表观消化能和能量转化率均显著高于对照组;各组间血液生化指标、肉品质及肉营养成分均无显著差异(P>0.05)。青贮甘蔗梢替代75%和100%青贮玉米秸秆可以显著提高湖羊生长性能和屠宰性能,而且对湖羊血清生化指标、组织器官发育和肉品质无不利影响。[结论]青贮甘蔗梢可替代青贮玉米秸秆饲喂肉羊,且最佳替代比例为75%~100%。 展开更多
关键词 青贮甘蔗梢 湖羊 生长性能 消化代谢 屠宰性能 肉品质
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广西甘蔗碳汇测算方法研究及时空格局分析 被引量:1
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作者 韦增欣 余家佳 +2 位作者 穆琳 佘乾仲 袁功林 《广西大学学报(自然科学版)》 CAS 北大核心 2024年第2期429-438,共10页
为了实现广西全区植被减源增汇目标,对广西主要经济作物甘蔗的碳吸收和碳排放量进行科学的测算,并开展甘蔗碳汇时空格局的研究分析;利用广西全区14个地级市2010—2020年甘蔗产量、农资投入等相关统计数据测算广西全区甘蔗净碳汇量,并运... 为了实现广西全区植被减源增汇目标,对广西主要经济作物甘蔗的碳吸收和碳排放量进行科学的测算,并开展甘蔗碳汇时空格局的研究分析;利用广西全区14个地级市2010—2020年甘蔗产量、农资投入等相关统计数据测算广西全区甘蔗净碳汇量,并运用空间自相关分析法分析2005—2020年间广西各市时空分布格局。结果表明:2010—2020年,广西全区甘蔗净碳汇量逐步上升;2005—2020年,广西全区甘蔗碳汇量在地级市尺度下不存在明显的全局空间自相关关系;广西全区甘蔗碳汇量逐步形成以南宁市为核心的局部溢出格局,充分利用南宁市的技术、产业优势扩大甘蔗碳汇的空间溢出效应,对提高广西全区的甘蔗碳汇水平至关重要。 展开更多
关键词 甘蔗 碳吸收 碳排放 净碳汇量
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甘蔗种质材料田间抗螟性综合评价及筛选
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作者 李德伟 罗亚伟 +4 位作者 黄慧文 李涛 梁菊菊 宋修鹏 覃振强 《南方农业学报》 CAS CSCD 北大核心 2024年第6期1561-1572,共12页
【目的】探索甘蔗种质材料田间抗螟性评价体系,并对163份不同甘蔗种质材料进行田间抗螟性评价,了解各材料对甘蔗螟虫的抗性表现,筛选优良的抗螟性甘蔗种质材料,为甘蔗抗螟种质创新、新品种选育及抗螟品种的推广应用提供参考。【方法】... 【目的】探索甘蔗种质材料田间抗螟性评价体系,并对163份不同甘蔗种质材料进行田间抗螟性评价,了解各材料对甘蔗螟虫的抗性表现,筛选优良的抗螟性甘蔗种质材料,为甘蔗抗螟种质创新、新品种选育及抗螟品种的推广应用提供参考。【方法】通过田间甘蔗螟虫自然种群感虫法,跟踪调查163份甘蔗种质材料3年(1新2宿)田间的苗期螟害枯心率和生长中后期螟害节率,以新台糖22号(ROC22)作为抗螟性对照品种,计算各甘蔗种质材料的相对螟害减退率,并以相对螟害减退率及相应的甘蔗抗螟性分级评价体系对供试甘蔗种质材料进行抗螟性评价和筛选。【结果】163个甘蔗种质材料“1新2宿”的螟害枯心率在1.74%~21.75%、螟害节率在1.17%~9.74%;供试材料中3年均进入苗期螟害枯心率最重前20名的材料只有CP09-4707,均进入苗期螟害枯心率最轻前20名的材料为0份,均进入中后期螟害节率最轻或最重前20名的材料也为0份。抗螟性评价结果表明,在新植苗期、新植生长中后期、第1年宿根苗期、第1年宿根生长中后期、第2年宿根苗期和第2年宿根生长中后期的抗螟性表现为中抗以上的甘蔗种质材料数量分别有96、151、48、88、106和147份;以韦恩图分析方法筛选出GT03-571、GT03-1438、GT03-2887、YT96-86、GT02-467、Q200、T6、T5、ROC22、T8和GT42共11份甘蔗种质材料在6个生长时期的抗螟性表现均在中抗以上。【结论】建立了一种能有效结合甘蔗品种区域试验、对照品种明确易得、操作方法简单、可对甘蔗6个不同生长期抗螟性进行评价的评价体系。不同甘蔗种质材料间螟害率存在较大差异,抗螟性差异客观存在。筛选出11份在6个生长期抗螟性表现均在中抗以上的甘蔗种质材料,可用于抗螟新品种选育。 展开更多
关键词 甘蔗 甘蔗螟虫 种质材料 抗虫性 评价
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甘蔗横向种植机补种装置辊耙结构仿真分析 被引量:1
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作者 麻芳兰 滕筱 +2 位作者 李科 李尚平 吴飞 《农机化研究》 北大核心 2024年第4期48-52,共5页
针对甘蔗横向种植机在种植过程中出现的漏播问题进行了研究,设计了一套补种装置。通过ADAMS软件对装置中的补种辊耙进行顺逆时针等两种运动形式的虚拟仿真分析,分别得出齿式、整叶式与窝轮式等3种辊耙结构所受的力和扭矩等因素。仿真结... 针对甘蔗横向种植机在种植过程中出现的漏播问题进行了研究,设计了一套补种装置。通过ADAMS软件对装置中的补种辊耙进行顺逆时针等两种运动形式的虚拟仿真分析,分别得出齿式、整叶式与窝轮式等3种辊耙结构所受的力和扭矩等因素。仿真结果表明:在相同条件下,补种辊耙的逆时针转动方式更优于顺时针转动方式;窝轮式补种装置进行逆时针运动时,其力约为10N,力矩约为2N·m。由于窝轮式补种装置的力、力矩小于齿式补种装置与整叶式补种装置,因此其结构最优,补种性能最好。研究结果可为后续甘蔗横向种植机精准种植的研究与开发提供了一定的理论依据。 展开更多
关键词 甘蔗横向种植机 补种装置 辊耙结构 ADAMS
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基于离散元法的潮湿甘蔗复合肥参数标定 被引量:1
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作者 陈远玲 王梦乔 +2 位作者 金亚光 侯怡 李尚平 《中国农机化学报》 北大核心 2024年第1期229-236,共8页
为能准确建立潮湿甘蔗复合肥的离散元模型,合理设置仿真参数,提高肥料颗粒动力学仿真结果的准确性,以休止角为响应值,对不同含水率的甘蔗复合肥进行试验研究。通过卸料仓法建立含水率与休止角的三元回归方程,决定系数为0.99;基于Hertz-M... 为能准确建立潮湿甘蔗复合肥的离散元模型,合理设置仿真参数,提高肥料颗粒动力学仿真结果的准确性,以休止角为响应值,对不同含水率的甘蔗复合肥进行试验研究。通过卸料仓法建立含水率与休止角的三元回归方程,决定系数为0.99;基于Hertz-Mindlin with JKR粘结模型,通过Plackett-Burman试验、爬坡试验和Box-Behnken试验从9个初始参数筛选出JKR表面能、甘蔗复合肥剪切模量、甘蔗复合肥与不锈钢静摩擦系数、甘蔗复合肥间静摩擦系数、甘蔗复合肥间恢复系数5项显著性参数,并建立休止角—离散元参数模型,模型P值小于0.01,变异系数为6.35%;最后,通过对不同含水率下的最佳参数组合进行仿真休止角试验,仿真结果与物理休止角试验的相对误差小于7.66%,验证不同含水率的甘蔗复合肥参数标定结果和研究方法是合理可靠的。研究结果可为基于离散元法的甘蔗施肥机械动力学仿真研究提供参考。 展开更多
关键词 潮湿甘蔗复合肥 含水率 离散元 参数标定
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