搜索结果: 16-30 共查到“知识库 植物检疫学”相关记录159条 . 查询时间(1.935 秒)
将磁性纳米微球(MNP,表面修饰羧基的磁性四氧化三铁微球)与表面等离子体共振(SPR)免疫传感技术结合,以莠去津单克隆抗体(AT-mAb)与磁性纳米微球的偶联物(AT-mAb-MNP)作为传感识别元件,初步建立了一种用于饮用水中除草剂莠去津残留检测的SPR信号增强免疫传感方法。通过对检测条件的优化,该方法对自来水中莠去津的检出限为0.89 ng/mL(S/N=3),检测范围为8.62~7.18×1...
氰在禾谷类粮食中的吸附与降解
熏蒸剂 氰(C2N2) 粮食 吸附与降解 残留
2016/3/18
利用静态法研究了氰(C2N2)在禾谷类粮食中的吸附与降解过程,采用气相色谱法分析了C2N2在粮食中的吸附、残留和挥发行为,采用流动注射分析仪(FIA)测定了C2N2在粮食中可能的降解产物。结果表明:粮食对C2N2有较强的吸附能力,熏蒸1 h, 90%以上的C2N2被粮食吸附,其吸附能力为稻谷>高梁>玉米>大麦>小麦,同时C2N2在粮食中可降解为氰化氢(HCN)。通风后,C2N2及其降解产物HCN从...
自流式注射法中苹果树体吸收量回归方程的建立
自流式注射法 苹果树 吸收量 回归方程
2016/3/17
为确定苹果树体的有效吸收期并建立初始流速v0与有效吸收期内树体吸收量的回归方程,以纯水为注射液,研究了输液流速与树体吸收量的关系,通过统计软件分析相邻观测时间与对应流速间的函数关系,建立了初始流速v0与树体有效吸收期内吸收量的回归方程。结果表明:树体的有效吸收期为注射开始后0~48 h;相邻观测时间与对应的流速间存在极显著的一元线性关系和幂函数曲线关系,同时注射期间温度对流速具有一定影响,温度上升...
黄淮海带状间作大豆品种的筛选与鉴定
大豆 带状间作 相关性分析 主成分分析
2015/11/17
在玉米-大豆带状间作下，对55份大豆品种的15项农艺及产量性状进行综合分析与评价。结果表明：参试品种表型性状的变异系数为6.35%~55.76%，各性状平均遗传多样性指数达到1.984 3，说明各地的种质资源有着比较丰富的表型多样性；相关性分析表明单株粒重与茎粗、单株荚数、百粒重等9项指标呈现极显著的正相关关系，说明选择品种应着重考虑茎粗、单株荚数、百粒重等9项性状指标；通过主成分分析可以提取出5...
国外引进甘蔗材料白叶病植原体巢式PCR检测及其序列分析
国外甘蔗材料 甘蔗白叶病 巢式PCR检测 序列分析
2017/11/13
为有效防止引起重要危险性检疫病害甘蔗白叶病(SCWL)的植原体病原随引进甘蔗材料侵入我国, 确保我国甘蔗生产安全, 本研究对从缅甸、菲律宾、法国和泰国引进的22个甘蔗材料进行了SCWL植原体巢式PCR检测, 并对阳性样品的巢式PCR产物进行了测序及序列分析。结果表明, 18个甘蔗材料呈SCWL植原体阳性, 阳性检出率为81.8%。所有SCWL阳性样品的16S-23S 基因间隔区片段长210 bp,...
苯噻酰草胺在海泡石和凹凸棒石中的吸附行为
苯噻酰草胺 海泡石 凹凸棒石 吸附
2016/3/18
吸附是农药在土壤环境中行为和归宿的重要过程,农药在土壤矿物上的吸附直接影响其在土壤中的迁移、转化和生物利用等过程。了解农药在土壤中的吸附,对于预测和评价农药对土壤、地下水存在的潜在危害,开展土壤修复具有十分重要的意义。本研究通过批量平衡试验,研究了苯噻酰草胺在海泡石和凹凸棒石中的吸附行为及机理。结果表明:苯噻酰草胺在海泡石和凹凸棒石中的吸附分为快速反应阶段和慢速平衡阶段,吸附平衡时间约为6 h。其...
Biological Evidence for Practical Immunity of Apricot Cultivar Harlayne to Plum Pox Virus
stone fruits immunity PPV strains
2015/3/9
Ten-year results of the practical immunity investigation of apricot cv. Harlayne are presented. Two-year-old
trees of cv. Harlayne were inoculated by chip-budding with six different strains and isol...
Rhizobium japonicum as a Biocontrol Agent of Soybean Root Rot Disease Caused by Fusarium solani and Macrophomina phaseolina
: biological control Rhizobium sp
2015/3/9
The activity of Rhizobium japonicum against the soil-borne pathogens Fusarium solani and Macrophomina phaseolina as causative agents of soybean root rot disease in both culture medium and soil was eva...
Influence of Growing Bt maize on Fusarium Infection and Mycotoxins Content – a Review
Zea mays L. GMO non-GMO Fusarium spp.
2015/3/9
The literature linking Bt maize versus non-Bt maize and the changes in the fungal microflora spectrum and in
the mycotoxins content have been summarised. The European corn borer reportedly promotes ...
Effects of Verticillium lecanii (Zimm.) Viegas on Toxoptera citricida Kirkaldy (Homoptera: Aphididae) and its Parasitoid Lysiphlebus testaceipes Cresson (Hymenoptera: Braconidae)
brown citrus aphid alate aphids
2015/3/9
The preponderance of susceptible sour orange (Citrus aurantium L.) rootstock has facilitated the spread of
Citrus tristeza virus (CTV) in Trinidad and Tobago. CTV is transmitted by the brown citrus ...
Occurrence of Peronospora dianthicola on Carnations in the Czech Republic
downy mildew visual symptoms Dianthus chinensis
2015/3/9
A downy mildew disease was observed on leaves of Dianthus chinensis L. cv. Scarlet in Brno in June 2011.
Characteristics of visual symptoms and microscopic features are described. The morphology of ...
The myth of organic agriculture
organic agriculture environment yield pesticides fertilisers food
2015/3/3
Although many people are convinced of the superiority of organic agriculture in any form, there are many negative aspects that follow this type of agricultural system. The productivity of organic crop...
Will climatic changes enhance the risk of Tilletia indica in Europe?
Tilletia indica Karnal bunt wheat environmental factors quarantine pest
2015/3/3
The losses caused by T. indica consist mainly in losses of export markets, in costs of quarantine precautions, control and treatment of the infected grain. These reasons were satisfactory for implemen...
Efficacy of Bacillus thuringiensis, Mineral Oil, Insecticidal Emulsion and Insecticidal Gel Against Phyllocnistis citrella Stainton (Lepidoptera: Gracillariidae)
Phyllocnistis citrella Bacillus thuringiensis
2015/3/2
The efficacy of Bacillus thuringiensis, mineral oil, insecticidal emulsion (garlic extract, plant detergent soap
and food additive) and insecticidal gel (plant oil and plant extracts) to control the...
Plant genetic resources collecting, maintenance, evaluation, preservation and research of their varibility are among the hotspots of recent plant sciences. Nevertheless, most of the work in this are...