甘蔗抗虫机制的研究进展     

王法律  林东江  王亚如  王锦达 《农学学报》2020,10(6):32-39

甘蔗是重要的糖料作物也是潜在的能源作物,而甘蔗的生长过程中长期受到各种虫害威胁。目前用于防治甘蔗害虫主要是通过化学防治和生物防治,带来的害虫耐药性和环境安全问题不容忽视。选育和利用抗虫品种,挖掘甘蔗自身抗虫特性是目前公认的最根本、经济有效和对环境影响最少的办法。笔者首先介绍了不同甘蔗品种对甘蔗螟虫的抗性等级,再从甘蔗的物理抗性和生理生化抗性2个方面阐述甘蔗的抗虫原理,并重点介绍了甘蔗的诱导型生理生化防御体系。全文还就目前甘蔗抗虫研究现状提出建议和展望,以期为培育甘蔗抗性品种以及蔗田害虫综合治理提供参考。  相似文献   

农村合作经济组织对农业产业化发展的促进作用   总被引：4，自引：0，他引：4  

俞雅乖 《安徽农业科学》2007,35(32):10535-10537

首先说明了农村合作经济组织在农业产业化中能发挥政府所无法实施的效用;其次分析了农村合作经济组织在农业产业化中的具体作用;最后阐述了政府引导和鼓励农村合作经济组织发展的途径。  相似文献   

城乡社会保障均衡发展的制度设计及路径选择——基于对昆明市的实证分析     

王宁 《安徽农业科学》2012,40(11):6814-6817

介绍了城乡社会保障存在城乡二元结构突出、体制建设落后、发展水平不均衡等问题。提出了应以城乡社会救助为基础、社会保险为主体和社会福利服务为补充进行社会保障制度设计,并从体制创新、基金管理、组织领导和需求表达等方面进行制度建设,从而促进城乡社会保障均衡发展。  相似文献   

一种利用花粉管结合农杆菌介导方法将iaaM基因导入玉米自交系的研究     

翟亦倩  罗昌  程曦  张秀海  黄丛林  吴忠义 《安徽农业科学》2013,41(8):3336-3338

[目的]利用花粉管结合农杆菌介导方法将iaaM基因导入玉米自交系。[方法]利用电击转化法将iaaM基因的表达载体转入农杆菌LBA4404菌株中,通过花粉管通道法将验证正确的菌株直接转化京24玉米自交系,最后通过除草剂筛选及PCR检测得到阳性植株。[结果]试验共得到12株抗性植株,其中10株为阳性植株。[结论]该研究成功建立了一种无需组织培养体系,直接利用花粉管通道进行农杆菌介导的玉米转化方法。  相似文献   

国内外统筹城乡路径研究述评   总被引：1，自引：0，他引：1  

张燕君  侯远志 《安徽农业科学》2013,41(1):387-390

统筹城乡问题是我国经济社会可持续协调发展必须面对的重要问题,也是打破城乡二元格局,实现城乡一体化的必由之路。通过对国内外统筹城乡路径在理论和实践上的总结与梳理,提出了目前在城乡发展研究中仍存在的部分问题以及今后的发展方向,为我国统筹城乡路径的进一步探究提供参考与启示。  相似文献   

牧草的不同利用方式对果-草人工生态系统土壤理化及生物学性状的影响     

张桂荣  李敏 《土壤》2007,39(5):806-812

采用单因素随机区组试验研究了果-草人工生态系统中牧草的不同利用方式对土壤理化及生物学性状的影响.结果表明;刈割覆盖、刈割压埋、畜肥还园3种利用方式均能较清耕提高土壤水分含量,降低土壤密度,稳恒土壤温度,提高土壤养分含量,增加土壤微生物数量,提高土壤酶活性.相关性分析发现,除全P与纤维分解菌、纤维分解酶、多酚氧化酶为负相关外,其余养分与生物因子间均呈正相关,且多数养分与生物因子呈显著或极显著相关;经通径分析发现,脲酶、硅酸盐细菌、纤维分解酶是促进有机质积存的主要生物因素,蔗糖酶是影响N、P、K速效养分的最主要因子,过氧化氢酶、多酚氧化酶、纤维分解菌只是选择性地对有机质的积存和N、P、K速效养分的形成起作用.  相似文献   

Proteomic analysis of intestinal mucosa responses to Salmonella enterica serovar typhimurium in naturally infected pig     

C. Arce  C. Lucena  A. Moreno  J.J. Garrido 《Comparative immunology, microbiology and infectious diseases》2014

Salmonella enterica serovar typhimurium (S. typhimurium) is one of the most frequent Salmonella serotypes isolated from European pigs. Despite the advances in understanding the mechanisms involved in host–pathogen interactions and host cell responses to S. typhimurium, the global change that occurs in naturally exposed populations has been poorly characterized. Here, we present a proteomics study on intestinal mucosa of pigs naturally infected with S. typhimurium, in order to better understand the pathogenesis of salmonellosis and the pathways which might be affected after infection. Samples were analyzed by 2D-DIGE and 44 different proteins exhibited statistically significant differences. The data set was analyzed by employing the Ingenuity Pathway Analysis and the physiological function most significantly perturbed were immunological and infectious disease, cellular assembly and organization and metabolism. The pathways implicated in the porcine immune response to S. typhimurium were gluconeogenesis and Rho GDI/RhoA signaling, and our results suggest that keratins and the intermediate filaments could play an important role in the damage of the mucosa and in the success of infection. The role of these findings in salmonellosis has been discussed, as well as the importance of analyzing naturally infected animals to have a complete picture of the infection. Also, we compared the results found in this work with those obtained in a similar study using experimentally infected animals.  相似文献   

普通油茶种子4个发育时期的转录组分析   总被引：4，自引：0，他引：4  

林萍  曹永庆  姚小华  王开良  滕建华 《分子植物育种》2011,9(4):498-505

我国油茶产业迅速发展,种苗繁育及栽培技术不断进步,但油茶分子基础研究薄弱,决定油茶产量、茶油质量、抗性等指标的重要经济、生长性状的分子机理研究甚少,这必将阻碍油茶产业的可持续发展.本项目首次采用高通量测序技术solexa技术对普通油茶"长林4号"无性系种子发育的4个时期转录组进行测序,经组装分析获得80 310条uni...  相似文献   

层次灰色准优势分析模型及应用     

李炳军刘思峰  任盈盈 《勤云标准版测试》2005,(1):78-83

灰色准优势分析是重要的系统分析方法之一。为了克服已有灰色准优势分析模型没有考虑不同系统行为特征重要性差异及不能应用于由多层次相关因素构成的复杂系统分析的局限性,本引入加权平均合成法构造了复杂系统不同层次上相关因素绝对关联度的计算方法,建立了具有更广泛应用领域的层次灰色准优势分析模型,并以江苏省科技系统为例进行实证分析,验证了所建模型的有效性和实用性。本的结果拓展了灰色准优势分析的应用范围,为科学分析由多层次相关因素构成的复杂系统提供了一个新途径。  相似文献   

Tolerability and pharmacokinetic profile of a novel benzene‐poly‐carboxylic acids complex with cis‐diammineplatinum (II) dichloride in dogs with malignant mammary tumours          下载免费PDF全文

V. M. Kristiansen  S. Dewi  T. E. Horsberg  T. J. Jonasdottir  L. Moe  B. Berlinger  S. Lindkær‐Jensen  S. Larsen 《Veterinary and comparative oncology》2017,15(1):118-132

The pharmacokinetic profile, tolerability and efficacy of benzene‐poly‐carboxylic acids complex with cis‐diammineplatinum (II) dichloride (BP‐C1) were studied in dogs with mammary cancer. A three‐level response surface pathway designed trial was performed on seven dogs. At each level BP‐C1 was administered subcutaneously daily for 7 days followed by a 7‐day rest period in a dose escalating manner. Adverse events according to VCOG‐CTCAE, performance status and tumour progression were recorded. The pharmacokinetic profile followed a two‐compartment model with rapid absorption, short distribution, and a slow elimination phase. The overall elimination half‐life was 125 h. The maximum tolerated dose of BP‐C1 was estimated to be above 0.46 mg kg^?1. A significant reduction in VCOG‐CTCAE toxicity which correlated negatively with increasing dose was found. The dogs' general performance status remained unchanged. No decrease in total tumour burden was found, although temporary tumour reduction was seen in some target tumours.  相似文献