ABT诱导康乃馨试管苗生根的研究

本文报道ＡＢＴ附加于康乃馨生根培养基和直接用于试管苗外生根的效果，结果显示，附加ＡＢＴ培养基培养的康乃馨试管苗与附加ＮＡＡ，１ＢＡ和对照培养基培养的试管苗相比，其生极率及移栽存活率均有显著或极显著的提高，ＡＢＴ诱导试管苗生根的适用范围与ＩＢＡ一致，适宜浓度为０．２５～１ｍｇ／Ｌ，抑制浓度为４ｍｇ／Ｌ以上，诱导康乃馨试管苗瓶外生根，以１００ｍｇ／ｌＡＢＴ处理１ｈ效果最好，生根率达９０．７％，显著高于     

曼海母宫殿组织培养

曼海母宫殿以当年生枝条上饱满未萌发的侧芽为外植体．进行组织培养、在附加６－ＢＡ１．０ｍｇ／Ｌ的ＭＳ培养基上．芽诱导效果最好，在附加６－ＢＡ１．５＋ＮＡＡ０．０５＋ＺＴ０．１ｍｇ／Ｌ或ＫＴ１．０＋ＮＡＡ０．０５＋ＺＴ０．１ｍｇ／Ｌ的ＭＳ培养基上．芽的分化效果最好。在附加ＫＴ０．３＋ＮＡＡ０．０５＋ＺＴ０．１ｍｇ／Ｌ或６－ＢＡ０．３＋ＮＡＡ０．０５＋ＺＴ０．１ｍｇ／Ｌ的ＭＳ培养基上，壮苗效果最好。在附加ＩＢＡ０．１ｍｇ／Ｌ或ＩＢＡ０．１＋ＮＡＡ０．０２ｍｇ／Ｌ的１／２ＭＳ培养基上生根效果最好。试管苗高２．５～４．０ｃｍ，且具有３～５条短根时，开瓶锻炼３～５ｄ。移栽入土效果好、种植在保温保湿环境中．试管苗成活率高。     

西洋梨试管苗的生根试验

采用两种不同的生长素及处理方法，诱导西洋梨Ｃ４试管苗生根。试管生根法最适的ＩＢＡ浓度为１．２ｍｇ／Ｌ，生根率为６１．９％；ＮＡＡ浓度０．８ｍｇ／Ｌ效果较好，生根率为５３．７％。得到的生根苗生长健壮，发育良好，茎粗达１～２ｍｍ。用一定浓度的ＩＢＡ、ＮＡＡ浸枝处理，前者促根效果较好，ＩＢＡ３．０ｍｇ／Ｌ，生根率达６７．６％；同样浓度的ＮＡＡ促根效果较差，生根率只有３０％，并且这种方法得到的生根苗生长较弱，茎粗１ｍｍ左右。将促进生根的茎段适时转入不含激素的培养基中，不定根的形成部位不产生愈伤组织，从而为试管苗移栽奠定了良好的基础     

甜叶菊“中山一号”快速繁殖的研究

用甜叶菊“中山一号”嫩茎叶叶柄为外植体,ＭＳ为基本培养基,在附加ＢＡ（０．５ｍｇ／Ｌ）＋ＮＡＡ（０．２ｍｇ／Ｌ）的分化培养基上,分化率为８５％;继代增殖在附加ＺＴ（１．５ｍｇ／Ｌ）＋ＮＡＡ（０．１ｍｇ／Ｌ）的培养基上,每３～４周可增殖５～６倍;在附加ＢＡ（０．１ｍｇ／Ｌ）＋ＮＡＡ（０．５ｍｇ／Ｌ）＋ＩＢＡ（０．５ｍｇ／Ｌ）的生根培养基上,生根效果最好,出瓶前须炼苗２～３ｄ,生根苗移栽成活率在９０％     

珠美海棠适宜培养基的选择研究

用不同浓度的ＭＳ和ＩＢＡ组合对珠美海棠试管苗茎段生根，萌芽及生长的影响情况进行了研究，结果表明：１／３ＭＳ和０．１ｍｇ／Ｌ的ＩＢＡ有利于提高试管苗茎段的生根率，而１／２ＭＳ和０．２５ｍｇ／Ｌ的ＩＢＡ则可促进试管苗茎段芽梢的伸长：１／３ＭＳ＋０．１ｍｇ／Ｌ ＩＢＡ的组合是珠美海棠试管苗茎段，根、芽生长的适宜培养基，试管苗茎段的生根率和发芽率均为１００％，单株生根数能达到５条，单根月平均生长量可达３ｍ     

接骨木的快速繁殖研究

在ＭＳ培养基中进行基尖培养,研究植物激素对器官形成的影响．试验结果表明：ＢＡＰ可明显促进芽的形成和增殖,ＢＡＰ和ＮＡＡ结合使用有助于苗的形成和生长．合适的培养基为ＭＳ＋ＮＡＡ（０．２ｍｇ／Ｌ）＋ＢＡＰ（１．０ｍｇ／Ｌ）或者ＭＳ＋ＮＡＡ（０．２ｍｇ／Ｌ）＋ＢＡＰ（３．０ｍｇ／Ｌ）．ＮＡＡ对根的诱导有促进作用,诱导生根用１／２ＭＳ附加ＮＡＡ（０．２ｍｇ／Ｌ）,当无根苗转入生根培养基,诱导生根获得完整植株,试管苗移栽成功     

苹果与八棱海棠的试管苗外植体植株再生

苹果品种（新乔纳金、嘎拉）及八棱海堂的试管苗外植体（叶片、叶柄、节间茎段）,在附加ＢＡ与ＮＡＡ的ＭＳ培养基上,均能分化不定芽。基中在ＢＡ４ｍｇ／Ｌ＋ＮＡＡ０．２ｍｇ／Ｌ浓度组合的ＭＳ培养基上,嘎拉与枚棱海棠叶片的再生频率达到１００％。八棱海棠叶片再生苗在附加ＩＢＡ０．５ｍｇ／Ｌ的１／２ＭＳ培养基上生根效果最好。     

苦丁茶树微繁殖技术的研究

以苦丁茶树腋芽为外植体进行培养，诱导腋芽萌发，产生丛芽，同时，试管内外结合法诱导生根，并大田移栽．结果表明：ａ．初代培养以Ｂ５＋ＢＡ２ｍｇ／Ｌ＋ＩＢＡ０．５ｍｇ／Ｌ＋ＧＡ３０．５ｍｇ／Ｌ固体培养基诱导腋芽萌发较好；ｂ．Ｂ５＋ＢＡ０．５ｍｇ／Ｌ＋ＺＴ０．２ｍｇ／Ｌ＋ＧＡ３０．２ｍｇ／Ｌ固体培养基能诱导大量丛芽产生；ｃ．适当剪除叶片并去掉顶芽能促进腋芽萌发；ｄ．小苗在附加ＮＡＡ０．２ｍｇ／Ｌ，ＩＢＡ０．２ｍｇ／Ｌ，或ＮＡＡ０．１ｍｇ／Ｌ，ＩＢＡ０．２ｍｇ／Ｌ的１／２ＭＴ，１／２Ｂ５培养基上培养１０～１５ｄ，插入蛭石上发根，成苗快；ｅ．土壤保湿、避免强光照，是小苗成活的关键．     

花卉翡翠宝石的组织培养和快速繁殖

以观叶花卉翡翠宝石的枯芽为外殖体,培养在含有不同浓度植物激素的ＭＳ培养基中,结果表明,以ＭＳ＋ＢＡ５－７ｍｇ／Ｌ（单位下同）诱导侧芽生成是好;芽增殖培养基以附加３－６ｍｇ／ＬＢＡ为好,生根培养基为ＭＳ＋ＮＡＡ１ｍｇ／Ｌ最佳,生根的试管苗移栽成活率较高。     

甜柿离体快繁技术研究

以“富有”和“次郎”的休眠芽为外植体,对甜柿离体快繁技术进行了研究。结果表明,聚乙烯吡咯烷酮（ＰＶＰ）可有效地防止外植体褐变,提高分化率。芽的增殖和生长适宜的ＺＴ和ＩＡＡ浓度分别为１～２ｍｇ／Ｌ和０．０５～０．１０ｍｇ／Ｌ。在含有ＺＴ１ｍｇ／Ｌ的改良ＭＳ（ＫＮＯ３和ＮＨ４ＮＯ３减半）培养基中加入ＢＡ１ｍｇ／Ｌ,能提高有效新梢率,降低试管苗成本。ＩＡＡ诱导生根的效果优于ＩＢＡ,用生长素溶液浸新梢基部后转入１／２ＭＳＯ培养基中对生根更有利。在较低温度下,以腐殖土作基质,试管苗的移栽成活率可达８５％以上。     

Web2.0,以个人为中心的互联网时代的到来

本文介绍了Web2．0的知识和背景，对Web2．0出现的基础以及典型技术和应用作了阐述，同时对其作出了前景展望。     

盐胁迫对葡萄苗期多胺和激素代谢的影响

【目的】 研究盐胁迫条件下,葡萄叶片中多胺含量、多胺氧化酶、多胺合成酶活性以及激素的动态变化,研究不同盐胁迫强度对多胺类物质及激素代谢的影响。【方法】 采用盆栽基质培养模拟盐胁迫环境,设置4个NaCl处理梯度:0 (CK)、1、2和3 g/kg。多胺和激素含量的测定采用高效液相色谱法,多胺合成及分解酶活性的测定采用紫外分光光度计比色法。【结果】 盐胁迫处理后,葡萄叶片中多胺含量和脱落酸含量较对照而言显著增加,玉米素含量显著降低,随胁迫时间的延长,Put、Spm、Spd、ABA以及PAO、DAO、ADC、ODC、SAMDC活性均呈先上升后下降趋势,在10 d及10 d后达到峰值。ZT呈逐渐下降的趋势,并随胁迫强度增大而减小;进行显著性分析后,叶片中多胺含量与Put、Spm、Spd含量呈极显著正相关,DAO、ADC、ODC活性与Put含量呈显著正相关,PAO与SAMDC活性与Spm和Spd含量也呈极显著正相关。【结论】 3种多胺经酶的合成代谢后和激素共同缓解葡萄苗所遭受到的盐胁迫,期间主要发生作用的是多胺合成酶,盐胁迫下多胺与激素含量之间的变化关系也十分密切。     

市级综合气象信息分析与管理系统的设计与实现

以抚顺地区3个国家基本站50余年气象资料为依托,采用Microsoft Excel工作表实现由气候和农业气候2部分构成的气象与农业综合信息处理系统的基本思路、方法、内容、用途和使用情况。为了实现气候分析及应用的科学化、客观化、系统化、规范化、程序化及连续化的业务目标,按业务流程设计与实现的,包括资料处理、气候趋势模拟、气候预测、气候鉴定、季节性信息化处理、农作物产量预报、气候生产潜力分析等一系列内容在内的系统建设。关键是解决了大量的计算问题,建立了区域性通用模式。     

葡萄盆栽技术

葡萄盆栽技术,包括择土选种、露地扦插、田间管理、装盆及整形、肥水管理等内容,对葡萄盆栽爱好者有一定的指导意义。     

Yield and quality of maize stover: Variation among cultivars and effects of N fertilization

Biomass yields and concentrations of crude protein(CP), ether extract(EE), neutral detergent fiber(NDF), acid detergent fiber(ADF), and crude fiber(CF) were analyzed for five cultivars of summer-sown maize(Zea mays L.) stover grown in field trials at three rates of N fertilization, and sampled immediately after grain harvest.The results revealed differences in yields and concentrations of nutrients according to stalk height and hence harvest portion among the cultivars.N application greatly increased biomass yield and CP, especially in upper stalks and to a lesser extent, EE.Concentrations of NDF and ADF decreased as N rate increased.The results show that stovers from all local popular maize cultivars are suitable as animal fodder and that moderate N application improves feed quality of stover.     

民勤绿洲荒漠交错带三种沙丘类型的自然植被特征

基于对民勤沙井子地区植被调查数据,研究了固定沙丘、半固定沙丘和流动沙丘3种沙丘类型的自然植被特征.结果表明:从固定沙丘、半固定沙丘到流动沙丘,总盖度、灌木盖度下降,草本盖度增加.物种丰富度减小是物种多样性下降的主要原因.从植物的生活型来看,多年生草本和灌木类植物受沙丘类型的影响最大,而一年生草本和半灌木可存活于不同沙丘类型.白刺的生态优势度(重要值)由小到大依次为固定沙丘、半固定沙丘、流动沙丘.植物多样性与白刺的生态优势度呈负相关.不同沙丘类型白刺地上生物量变化明显,半固定沙丘白刺生物量最大.     

寄生虫引起的草鱼鳃病的组织病理比较研究

本文对草鱼的隐鞭虫病、车轮虫病、小瓜虫病、指环虫病、三代虫病及中华鱼蚤病六种寄生虫性鳃病的组织病理变化进行比较研究，寄生虫性鳃病均可引起鳃组织发生炎症反应，粘液分泌亢进，嗜酸粒细胞和淋巴细胞浸润；但又因病原体的种类不同，危害鱼的方式、方法不同，因此病理变化又有很大差别，对鱼危害较大的均为变质性炎，如隐鞭虫病；对鱼危害较小的则属增生性炎，如中华鱼蚤病．     

Multi-variable grey model (MGM (1,n,q)) based on genetic algorithm and its application in urban water consumption

Urban water consumption has some characteristics of grey because it is influenced by economy, population, standard of living and so on. The multi-variable grey model （MGM（1,n））, as the expansion and complement of GM（1,1） model, reveals the relationship between restriction and stimulation among variables, and the genetic algorithm has the whole optimal and parallel characteristics. In this paper, the parameter q of MGM（1,n） model was optimized, and a multi-variable grey model （MGM（1 ,n,q）） was built by using the genetic algorithm. The model was validated by examining the urban water consumption from 1990 to 2003 in Dalian City. The result indicated that the multi-variable grey model （MGM（1,n,q）） based on genetic algorithm was better than MGM（1,n） model, and the MGM（1,n） model was better than MGM（1,1） model.     

Molecular detection of virulence genes in Campylobacter species isolated from livestock production systems in South Africa

Campylobacter species are a major cause of foodborne bacterial infections in both developed and developing countries worldwide. Campylobacter jejuni is responsible for the majority of infections. This study was conducted to identify virulenceassociated genes in Campylobacter species isolated from livestock production systems in South Africa. A total of 250 fecal samples consisting of cattle(n=50), chickens(n=50), goats(n=50), sheep(n=50) and pigs(n=50) were randomly collected from livestock in Eastern Cape and KwaZulu-Natal provinces of South Africa between April and October 2018. The samples were analyzed for the presence of virulence genes in Campylobacter species using molecular PCR-based methods. It was found that 77 and 23% of Campylobacter jejuni and Campylobacter coli respectively were isolated from all the livestock samples. There were positive significant(P0.05) correlations amongst all the virulence genes that were investigated. Chisquare and Fisher's exact tests were implemented to test for the effect of livestock species on the presence or absence of virulence genes. The study demonstrated that most of livestock species can potentially cause zoonotic infections and food poisoning due to the high prevalence of Campylobacter. The high prevalence of virulence genes highlights the significance of Campylobacter in livestock production systems in South Africa. This requires the implementation of one-health approaches to reduce the impact of foodborne and zoonotic diseases for the welfare of human and animal health.     

红苕饲粮中添加铜和/或喹乙醇对猪生产性能及某些血液生化指标的影响

选体重约38公斤的长白(♂)×成华(♀)杂交猪20头,随机分为四组,饲予四种不同的饲粮,研究饲粮中添加铜和/或喹乙醇对猪生产性能和某些血液生化指标的影响。结果表明:基础组、加铜组、加喹乙醇组和两者同时加组全期日增重分别为674、761、796、678克,日采食量分别为2.50、2.65、2.74、2.40公斤,饲料利用率分别为3.73、3.49,3.44、3.54,添加铜和/或喹乙醇对试验第65天血清铜兰蛋白、尿素氨及屠宰率、背膘厚和眼肌面积无显著影响(p>0.05);添加铜使65天血清碱性碱酸酶活性极显著增高(p<0.01),添加喹乙醇有使之升高的趋势,两者同时添加时,碱性酸磷酶活性降低。