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Effect of extraction methods and temperature preservation on total anthocyanins compounds of Peristrophe bivalvis L. Merr leaf 不同提取方法及温度保存对双叶花青素总含量的影响
Q3 Agricultural and Biological Sciences Pub Date : 2022-02-15 DOI: 10.7324/jabb.2022.100218
Thuyet Nguyen Minh, Han Dao Huynh Ngoc, Minh Vo Quang, Tai Ngo Van
This paper proposes anthocyanins extraction from Peristrophe bivalvis L. Merr. (“lá cẩm”) and preservation. Experiments were performed in water as a solvent using two different extraction methods [conventional extraction (CE) and microwave-assisted extraction (MAE)], including different solvent-to-raw material ratios, temperatures/microwave power, and times of extraction. The total anthocyanin in the extract was analyzed by UV-Vis. Multiple regression analysis was applied to analyze the influence of factors and select the optimal parameters for each extraction process. The influence of storage conditions on the quality of extracts from “lá cẩm” leaves was controlled. It was observed that the ratio of solvent and fresh leaf used, temperature/ microwave power, and extraction time all affected the anthocyanin content recovered from the extract when using different extraction techniques. The MAE technique gave superior results compared to the CE method. The solvent used was slightly higher and the extraction time was 6.2 times shorter than that of the CE method. The optimal parameters of each extraction technique are selected. With the CE method, the solvent-to-fresh leaf ratio was 11.22:1; the optimum temperature and time were 88°C and 27.21 minutes resulting in the anthocyanin content in the extract being 25.61 mg/g dry weight basic (db). Meanwhile, with the MAE method, the solventto-fresh leaf ratio used was 10.83:1 (v/w), the microwave power and the optimal extraction time were 600 W and 4.39 minutes, and the obtained extract had an anthocyanin content of 30.97 mg/g db. In addition, the extract was best preserved in the dark and the storage temperature was −9°C. The remaining anthocyanin content after 30 days of storage was 92.35%. The anthocyanin degradation kinetics was also analyzed. Changes in total anthocyanin followed a zero-order reaction kinetic model. The potential of the half-life of anthocyanin was 221, 114, and 19 days at −9°C, 4°C, and 28°C, respectively.
本文提出了从双瓣草中提取花青素的方法。(“ cẩm”)和保存。实验以水为溶剂,采用两种不同的提取方法[常规提取(CE)和微波辅助提取(MAE)],包括不同的溶剂与原料比、温度/微波功率和提取次数。用紫外-可见分光光度法测定提取物中总花青素的含量。采用多元回归分析方法对各提取工艺的影响因素进行分析,优选出最佳提取工艺参数。研究了贮存条件对“l cẩm”叶提取物质量的影响。不同提取工艺对花青素含量的影响有溶剂与鲜叶的配比、提取温度/微波功率、提取时间等。与CE法相比,MAE技术具有更好的结果。溶剂用量略高,提取时间比CE法缩短6.2倍。选择了各种提取工艺的最佳参数。CE法溶剂与鲜叶比为11.22:1;最佳温度为88℃,时间为27.21 min,提取液中花青素含量为25.61 mg/g干重(db)。同时,采用微波提取法,溶剂与鲜叶比为10.83:1 (v/w),微波功率为600 w,最佳提取时间为4.39 min,得到的花青素含量为30.97 mg/g db。此外,提取液在黑暗中保存效果最好,保存温度为- 9°C。贮藏30 d后,剩余花青素含量为92.35%。并对花青素降解动力学进行了分析。总花青素的变化遵循零级反应动力学模型。在- 9°C、4°C和28°C条件下,花青素的潜在半衰期分别为221、114和19天。
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引用次数: 7
Diversity due to mutations in circulating virus strains of SARS-CoV-2 may delay control of COVID-19 SARS-CoV-2流行病毒株突变导致的多样性可能会延迟COVID-19的控制
Q3 Agricultural and Biological Sciences Pub Date : 2022-02-15 DOI: 10.7324/jabb.2022.100223
Patil Sharanagouda S., S. Chandan, Dharmashekar Chandan, P. Sushma., Suresh Kuralayanapalya Puttahonnappa, Prasad Ashwini, K. Shiva Prasad, Yadav Mahendra P., S. Chandrashekar, Pattnaik Bramhadev
Severe acute respiratory syndrome (SARS)-coronavirus-2 (CoV-2) is a beta-coronavirus (beta-CoV;sarbecovirus), like its predecessors SARS and MERS CoVs. Of the structural proteins of the virus, the Spike (S) protein on the virion envelope binds to the host cell ACE2 through viral epitopes in the receptor-binding domain (RBD). Deletions in the ORF8 as well as mutations in the S gene of SARS-CoV of 2003 were related to adaptation of the virus to humans. The emergence of novel variants of SARS-CoV-2, viz., B.1.1.7, B.1.427 and B.1.429, B.1.617 and its Kappa and Delta strains/ variants, B.1.351, and P.1 in the United Kingdom, Americas, India, South Africa and Brazil, respectively, has been found be associated with the current waves of the COVID-19 pandemic. These variants are antigenically dissimilar, whereas the current COVID-19 vaccines are monovalent. This is a handicap in the control program. The Delta variant has been reported in 74 countries as of 14 June 2021 and the anticipated third wave involving this variant is of concern to the countries (www.gavi.org). Of late, on 17 June 2021, Delta Plus variant was identified in India (AIIMS, Bhopal, India). Circulation of virus in vaccinated population may lead to endemicity, and this can be monitored by regular serosurveillance for antibodies against select non-structural proteins (NSPs) of the virus;antibodies to NSPs will indicate virus replication in the host. Endemic areas will have higher NSP reactors. It is predicted that the Delta B.1 variant may ignite the third wave of the disease in many countries. As it has been difficult to achieve uniformity in time and density of the vaccination even in the districts, circulation of the virus in partially immune population may lead to the selection of newer variants of SARS-CoV-2. The presence of monoclonal antibody resistant mutants and neutralization—escape mutants in quasispecies structure of another + sense RNA virus, i.e., Aphthovirus (FMD virus;foot and mouth disease virus) in the family Picornaviridae is well documented. The situation could be similar in the Coronaviridae member SARS-CoV-2. Previous immunity may not protect against current/ future mutants thereby pro-longing the COVID-19 control Programme. © 2022 Sharanagouda S. Patil et al.
严重急性呼吸综合征(SARS)-冠状病毒-2 (CoV-2)是一种乙型冠状病毒(乙型冠状病毒;sarbecvirus),与其前身SARS和中东呼吸综合征冠状病毒一样。在该病毒的结构蛋白中,病毒粒子包膜上的Spike (S)蛋白通过受体结合域(RBD)的病毒表位与宿主细胞ACE2结合。2003年SARS-CoV的ORF8缺失和S基因突变与病毒对人类的适应有关。新出现的SARS-CoV-2变种,即B.1.1.7、B.1.427和B.1.429、B.1.617及其在英国、美洲、印度、南非和巴西的Kappa和Delta毒株/变种、B.1.351和P.1,已被发现与当前的COVID-19大流行浪潮有关。这些变异在抗原性上是不同的,而目前的COVID-19疫苗是单价的。这是控制程序中的一个缺陷。截至2021年6月14日,已经有74个国家报告了Delta型,这些国家对涉及该型的预期第三波感到担忧(www.gavi.org)。最近,在2021年6月17日,在印度发现了Delta Plus变体(AIIMS, Bhopal, India)。病毒在接种疫苗人群中的传播可能导致地方性流行,这可以通过定期检测针对病毒的选定非结构蛋白(NSPs)的抗体来监测;NSPs抗体将表明病毒在宿主中复制。疫区将有更高的核反应堆。据预测,Delta B.1变种可能会在许多国家引发第三波疫情。由于即使在地区也难以实现疫苗接种时间和密度的均匀性,病毒在部分免疫人群中的传播可能导致新变体SARS-CoV-2的选择。在小核糖核酸科的另一种+感RNA病毒,即口蹄疫病毒(口蹄疫病毒)的准种结构中存在单克隆抗体耐药突变体和中和逃逸突变体。冠状病毒科成员SARS-CoV-2的情况可能类似。先前的免疫可能无法预防当前/未来的突变体,从而延长COVID-19控制规划。©2022 Sharanagouda S. Patil et al。
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引用次数: 1
Isolation and identification of potent tributyltin chloride utilizing Pseudomonas sp. strain VBAK from Vishakhapatnam shipping harbor sediments 利用假单胞菌VBAK从维沙卡帕特南港沉积物中分离鉴定强效三丁基氯化锡
Q3 Agricultural and Biological Sciences Pub Date : 2022-02-15 DOI: 10.7324/jabb.2022.100203
Kumar Battu Anand, Gummadi Triveni, Gundluri Bhargava Ram, Berde Chanda Vikrant, Pallaval Veera Bramhachari
Screening for tributyltin (TBT)-resistant and degrading bacteria was pertinent for the selection of isolates with decontamination ability of TBT. With this rationale, 205 strains were isolated from Vishakhapatnam shipping harbor sediments and their tolerance limit to TBT was evaluated in minimal salts media containing 2 mM TBT as the sole carbon source. Fourteen selective TBT-resistant isolates showed cross-tolerance to heavy metals and antibiotics. Among them, one interesting isolate VBAK, showing the highest TBT resistance and maximum growth yield, was selected and taxonomic identification was carried out by sequencing 16S rRNA gene. The maximum composite likelihood algorithm formed a coherent cluster with clad comprised Pseudomonas sp. The thin-layer chromatography profile of the degradation product revealed the depletion of TBT into dibutyltin. The Rf values of TBT and transformed compounds were 0.8 (solvent front = 16.5 ± 2, TBT 9.1 ± 1.0) and 0.7 (solvent front = 6.5 ± 2, product 6.8 ± 2), respectively. These results suggest that Pseudomonas sp. strain VBAK is potentially useful for bioremediation of TBT contamination.
筛选三丁基锡(TBT)耐药和降解菌是筛选具有TBT去污能力菌株的重要依据。基于这一原理,从维沙卡帕特南航运港口沉积物中分离出205株菌株,并在含有2 mM TBT作为唯一碳源的微量盐培养基中评估了它们对TBT的耐受极限。14株选择性tbt耐药菌株对重金属和抗生素表现出交叉耐受性。从中筛选出一株对TBT抗性最强、生长产量最高的感兴趣分离株VBAK,并通过16S rRNA基因测序进行分类鉴定。最大复合似然算法与包覆的假单胞菌形成了一个相干簇。降解产物的薄层色谱谱显示TBT消耗为二丁基锡。TBT和转化化合物的Rf值分别为0.8(溶剂前= 16.5±2,TBT为9.1±1.0)和0.7(溶剂前= 6.5±2,产物6.8±2)。这些结果表明假单胞菌菌株VBAK在TBT污染的生物修复中具有潜在的应用价值。
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引用次数: 0
Antibacterial activity and hormetic response of silver nanoparticles synthesized using leaflet extract of wheat (Triticum aestivum) and rice (Oryza sativa) crop plants 小麦(Triticum aestivum)和水稻(Oryza sativa)作物小叶提取物合成的银纳米颗粒的抗菌活性和致敏反应
Q3 Agricultural and Biological Sciences Pub Date : 2022-02-15 DOI: 10.7324/jabb.2022.100219
Pahal Vikas, K. Pankaj, Kumar Parveen, K. Vinod
Vikas Pahal1* , Pankaj Kumar2, Parveen Kumar3 , Vinod Kumar4 1Department Of Microbiology, Dolphin PG College of Science and Agriculture, Chunni Kalan, Fatehgarh Sahib, Punjab, India. 2Department Of Microbiology, Dolphin PG Institute of Biomedical and Natural Sciences, Dehradun, India. 3Bio-nanotechnology Lab, Central Scientific Instruments Organization, Chandigarh, India. 4Department of Pharmacology and toxicology, National Institute of Pharmaceutical Education and Research, S.A.S. Nagar, Mohali, India.
Vikas Pahal1*, Pankaj Kumar2, Parveen Kumar3, Vinod Kumar4 1 Dolphin PG科学与农业学院微生物学系,Chunni Kalan, Fatehgarh Sahib, Punjab,印度。2 Dolphin PG生物医学与自然科学研究所微生物学系,Dehradun,印度。3生物纳米技术实验室,中央科学仪器组织,昌迪加尔,印度。4国家药学教育与研究研究所药理学与毒理学学系,S.A.S. Nagar,印度莫哈里(,印度。
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引用次数: 2
Growth-promoting effects of marine microalgae species using tropical forest soil extracts 热带森林土壤提取物对海洋微藻的促生长作用
Q3 Agricultural and Biological Sciences Pub Date : 2022-02-15 DOI: 10.7324/jabb.2022.100216
Arumugam Kasturi, Y. Nor Suhaila, A. Hasdianty, A. Mohd Fadzli, Maniyam Maegala Nallapan, Hashim Emi Fazlina, Sjahrir Fridelina, Ikram Wan Muhammad, Komatsu Kazuhiro, Kuwahara Victor S.
Kasturi Arumugam1, Nor Suhaila Yaacob2*, Hasdianty Abdullah2, Mohd Fadzli Ahmad1, Maegala Nallapan Maniyam3, Emi Fazlina Hashim4, Fridelina Sjahrir1, Wan Muhammad Ikram1, Kazuhiro Komatsu5, Victor S. Kuwahara4 1Faculty of Engineering Life Sciences, Department of Science Biotechnology, Universiti Selangor, Selangor, Malaysia. 2Institute of Bio-IT Selangor, Universiti Selangor, Selangor, Malaysia. 3Centre for Foundation and General Studies, Universiti Selangor, Selangor, Malaysia. 4Faculty of Education Graduate School of Engineering, Soka University, Hachioji-Shi, Japan. 5Regional Environmental Conservation Division, National Institute for Environmental Studies, Tsukuba, Japan.
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引用次数: 1
Partial identification of a peptide from Lacticaseibacillus casei using MALDI TOF and it’s cytotoxic activity against MDA-MB-231 cell line MALDI TOF法部分鉴定干酪乳杆菌肽段及其对MDA-MB-231细胞株的细胞毒活性
Q3 Agricultural and Biological Sciences Pub Date : 2022-02-15 DOI: 10.7324/jabb.2022.100206
Siddique Jannatul Firdous, V. Mohanasrinivasan
The current study focused to extract and purify the peptide of interest efficaciously from Lacticaseibacillus casei. The peptide of interest was partially identified and checked for anti-cancer activity using MDA-MB-231 triple negative breast cancer cell line. To begin with, it was purified via ammonium sulfate precipitation, ultrafiltration, and gel filtration chromatography. It was partially identified using mass matrix assisted laser desorption/ ionization-mass spectrometry (MS-MALDI) and checked for cytotoxic activity using (3-(4,5-Dimethylthiazol2-yl)-2,5-Diphenyltetrazolium Bromide) assay. As an outcome, the active part collected after ultra-filtration, 880 μg/ml of protein content with 15 mm zone diameter, was loaded on sephadexG50 column. The purified protein content was found to be 118 μg/ml with 15 mm of zone of inhibition against Listeria monocytogenes. A peak was obtained at a retention time of 9.371 minutes on subjected to high performance liquid chromatography. The result of MS-MALDI revealed it as an unnamed peptide with 75% query sequence similarity with the hypothetical protein of Lactobacillus reuteri. The cytotoxic study revealed its potential as an anti-cancer peptide, with the IC50 value of 108 μg/ml for MDA-MB-231 cancer cell line. In conclusion, this is the first report of this unknown peptide which showed both antibacterial and cytotoxic activity. It may act as a promising agent and can be further explored in future.
本研究的重点是从干酪乳杆菌中有效地提取和纯化目的肽。利用MDA-MB-231三阴性乳腺癌细胞株,对目标肽进行了部分鉴定和抗癌活性检测。首先,通过硫酸铵沉淀、超滤和凝胶过滤层析纯化。采用质量基质辅助激光解吸/电离-质谱法(MS-MALDI)对其进行部分鉴定,并采用(3-(4,5-二甲基噻唑-2 -基)-2,5-二苯四唑溴)测定法检测其细胞毒活性。结果超滤后的活性部分,蛋白含量880 μg/ml,区径15 mm,装于sephadexG50柱上。纯化后的蛋白含量为118 μg/ml,对单核增生李斯特菌有15 mm的抑制带。高效液相色谱法在保留时间为9.371 min时得到一个峰。MS-MALDI分析结果显示,该蛋白为未命名肽,与假定的罗伊氏乳杆菌蛋白的查询序列相似性为75%。细胞毒性研究显示其作为抗癌肽的潜力,对MDA-MB-231癌细胞的IC50值为108 μg/ml。总之,这是首次报道这种具有抗菌和细胞毒活性的未知肽。它可能是一种很有前途的药物,可以在未来进一步开发。
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引用次数: 0
Evaluation of the biosorption potential of Aspergillus flavus biomass for removal of chromium (VI) from an aqueous solution 评价黄曲霉生物质对水溶液中铬(VI)的生物吸附潜力
Q3 Agricultural and Biological Sciences Pub Date : 2022-02-15 DOI: 10.7324/jabb.2022.100208
Kapoor Riti Thapar
Chromium biosorption potential of live and dead biomass of Aspergillus flavus was analyzed by batch experiments under various experimental conditions like pH, adsorbent dose, exposure period, and temperature. Maximum biosorption of hexavalent chromium was observed at pH 3.5 with adsorbent dose 2.5 g at 30°C. Three days were considered as the optimum exposure period for chromium removal for live biomass, whereas 1.3 hours exposure period for dead biomass of A. flavus. The equilibrium data were examined by Langmuir and Freundlich isotherms. Freundlich isotherm appeared to be the best fit model. Phytotoxicity test was conducted to check the effect of the treated chromium solution on the seed germination, seedling length, and vigor index of Vigna radiata. Only 23% germination was reported in chromium metal-treated V. radiata seeds, but germination and growth parameters of mung bean seeds were significantly increased in the chromium solution after treatment with dead and live biomass. The chromium biosorption potential showed the following trend: dead A. flavus > live A. flavus. Hence, live and dead biomass of A. flavus can be applied as a safe and economically feasible biosorbent for hexavalent chromium elimination for the treatment of industrial effluent or wastewater system.
通过批量实验,分析了黄曲霉在不同pH、吸附剂剂量、暴露时间、温度等实验条件下对铬的生物吸附潜力。在pH为3.5、吸附剂剂量为2.5 g、温度为30℃的条件下,对六价铬的生物吸附量最大。黄曲霉活生物量脱除铬的最佳处理时间为3 d,死生物量脱除铬的最佳处理时间为1.3 h。平衡数据用Langmuir和Freundlich等温线检验。Freundlich等温线似乎是最合适的模型。通过植物毒性试验,考察了铬溶液处理对紫穗槐种子萌发、幼苗长度和活力指数的影响。金属铬处理的绿豆种子只有23%的发芽率,但在铬溶液中,死生物量和活生物量处理后绿豆种子的发芽率和生长参数均显著提高。铬的生物吸附电位表现为:死黄曲霉比活黄曲霉强。因此,黄曲霉的活生物量和死生物量可以作为一种安全且经济可行的生物吸附剂用于工业废水或废水系统的六价铬去除。
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引用次数: 1
Molecular detection of Haemophilus influenzae isolated from eye swabs of patients with conjunctivitis in Hilla Province, Iraq 伊拉克希拉省结膜炎患者眼拭子分离流感嗜血杆菌的分子检测
Q3 Agricultural and Biological Sciences Pub Date : 2022-02-15 DOI: 10.7324/jabb.2022.100220
Al-Buhilal Jundi Alak Mahdi, Rhumaid Abdulkadir Kareem, Al-Tabtabai Alyaa Mohammed H., AL-Rubaey Niran Kadhim F.
Jundi Alak Mahdi Al-Buhilal1, Abdulkadir Kareem Rhumaid1, Alyaa Mohammed H. Al-Tabtabai2, Niran Kadhim F. AL-Rubaey3* 1Department of Technical Medical Laboratories, Institute of Medical Technology Al-Mansour, Middle Technical University, Baghdad, Iraq. 2Department of Biotechnology, College of Science, University of Baghdad, Baghdad, Iraq. 3Department of Microbiology, Hammurabi College of Medicine, University of Babylon, Babylon, Iraq.
Jundi Alak Mahdi Al-Buhilal1, Abdulkadir Kareem rhumai1, Alyaa Mohammed H. Al-Tabtabai2, Niran Kadhim F. AL-Rubaey3* 1伊拉克巴格达中部技术大学Al-Mansour医学技术研究所医学技术实验室2伊拉克巴格达大学理学院生物技术系3伊拉克巴比伦大学汉谟拉比医学院微生物系
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引用次数: 0
Utilization of biosurfactant produced by Pseudomonas aeruginosa strain LTR1 for the synthesis of the silver nanoparticles and their application as antimicrobial agents 利用铜绿假单胞菌菌株LTR1生产的生物表面活性剂合成纳米银及其抗菌应用
Q3 Agricultural and Biological Sciences Pub Date : 2022-02-15 DOI: 10.7324/jabb.2022.100205
D. Nitin, K. Dilip, D. Pravin, Kathwate Gunderao
Nitin Deshmukh1, Dilip Kadam2, Pravin Deshmukh3, Gunderao Kathwate4* 1Department of Microbiology, K. N. Bhise Arts, Commerce and Vinayakrao Patil Science College, Bhosare, Solapur, India. 2Department of Microbiology, D. B. F. Dayanand Arts and Science College, Solapur, India. 3Department of Microbiology, Pratapsinh Mohite Patil Mahavidyalaya, Karmala, India. 4Department of Biotechnology, Savitribai Phule Pune University, Pune, India.
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引用次数: 0
Interaction efficiency of Trichoderma spp. and some plant extracts against ear-cockle disease 木霉与部分植物提取物对耳曲病的互作效果研究
Q3 Agricultural and Biological Sciences Pub Date : 2022-02-15 DOI: 10.7324/jabb.2022.100213
Al-Taie Azher Hameed Faraj, Al-Zubaid Noor Kadhum
Ear-cockle disease is one of the ‎important aerial diseases of wheat. It is caused by wheat seed gall nematode Anguina tritici. This study aimed to evaluate the interaction effect between Trichoderma spp. as bioagents and some plant extracts. The latter are used as alternative substances to ‎control the seed gall nematode in both laboratory and field conditions. The bioassay of juveniles in the second stage (J2) of A. tritici was‎ conducted using the biopesticide Biocont-T-WP (Trichoderma ‎harzianum), isolate of Trichoderma hamatum T-113, and ‎nematic and seaweed extract for their effect on the viability of A. tritici J2. nematicide Rugby 100 has been used as a positive control.‎ The lab-bioassay was achieved on the daily accumulated J2 mortality percentage during ‎‎1, 3, 5, 7, 9, and 11 days of incubation, while the field-bioassay was evaluated for‎ wheat growth, yield, and infection attributes.‎ The lab-bioassay showed that ‎Biocont-T has a higher mortality effect followed by the nematic extract with averages of 40.56% and ‎‎12.52%, respectively. The accumulative J2 mortality percentage increased gradually and reached a maximum on the 11th day of incubation. ‎In the field-bioassay, mixing wheat ‎seed Ibaa-99 with Biocont-T decreased infection percentage 77.7% and the number of galls spike–1 to 1.63 compared to the control 5.66 galls spike–1.
穗曲病是小麦重要的空气病害之一。它由小麦种子瘿线虫引起。本研究旨在评价木霉作为生物制剂与部分植物提取物的互作效应。后者在实验室和田间条件下用作控制种子瘿线虫的替代物质。采用哈兹木霉(Trichoderma harzianum)生物农药bioconto - t- wp、hamatum木霉T-113分离物、向向木和海藻提取物对麦黑麦霉J2幼体(J2)活力的影响进行了生物测定。杀线虫剂Rugby 100被用作阳性对照。在1、3、5、7、9和11天的培养期间,实验室生物测定对每日累积的J2死亡率进行了测定,而现场生物测定对小麦生长、产量和感染属性进行了评估。实验室生物测定结果显示,生物对照t的致死率最高,其次是向列相提取物,平均致死率分别为40.56%和12.52%。J2累计死亡率逐渐升高,在第11天达到最大值。在田间生物试验中,将小麦种子Ibaa-99与biocon - t混合后,侵染率降低了77.7%,穗数从5.66个穗数减少到1.63个穗数。
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引用次数: 1
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