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中外早熟大豆对大豆食心虫的抗性研究
早熟大豆 大豆食心虫 抗虫性分析
2015/11/17
对来自中国、俄罗斯、加拿大、匈牙利、奥地利、德国、法国、波兰等20个国家的336份大豆材料进行大豆食心虫的抗性评价, 鉴定筛选出高抗材料58份，抗性材料64份，抗虫材料占34.7%，主要来自中国和俄罗斯。大豆品种抗虫性与大豆品种农业性状进行相关分析，及不同地理生态区大豆资源的抗虫性结果表明：大豆品种抗虫性与与节数、单株粒数、单株粒重、百粒重、豆荚茸毛密度、种皮颜色呈显著相关，大豆植株矮小，籽粒小、...
育肥完成后到冬眠前的阶段被认为是贮脂类冬眠动物从体温常态到冬眠之间的过渡阶段。为研究此阶段瘦素对能量平衡和体温调节的作用，将完成育肥的达乌尔黄鼠随机分成3组，分别在侧脑室植入微渗透泵，持续灌注瘦素（0.5μg/day）、瘦素拮抗剂（0.5μg/day瘦素+5μg/day瘦素拮抗剂）以及人工脑脊液（对照组），为期4周。为了检测瘦素对动物入眠的影响，我们在药物处理最后一周将动物移入低温（5 oC±1o...
多巴胺对长爪沙鼠贮食行为的影响
长爪沙鼠贮食行为 多巴胺抑制剂 多巴胺激动剂
2016/7/18
长爪沙鼠的贮食行为具有高低二型性。禁食诱导的贮食行为可能与中脑多巴胺系统（Dopamine，DA）有关，但尚乏证据。本文通过Fos标记相关脑区的活性，酪氨酸羟化酶（TH）标记DA神经元，以免疫组化方法观察高贮食组沙鼠腹腔注射DA拮抗剂haloperidol （1 mg/kg）和对低贮食组沙鼠腹腔注射DA激动剂apomorphine（0.3 mg/kg）的行为和神经变化，验证中枢DA对贮食行为的调节...
葡萄霜霉菌候选效应子RXLR5信号肽的鉴定
葡萄霜霉病菌 信号肽 酵母分泌系统 蔗糖酶活性
2017/11/8
利用Getorf、SignalP 3.0、BLASTP等生物信息学软件和PERL语言从葡萄霜霉菌基因组中预测到一条编码RXLR-EER结构域的效应蛋白候选基因, 将该基因编码的蛋白命名为RXLR5。将RXLR5信号肽SP5编码序列连接到pSUC2T7M13ORI载体并转化到酵母蔗糖酶缺陷菌株YTK12后, 重组菌株能成功分泌蔗糖酶, 促使棉籽糖分解成单糖, 因此, 能在YPRAA培养基上正常生长;...
为评价叶菌唑在小麦中的残留行为及其产生的膳食摄入风险,于北京、安徽及黑龙江进行了1年3地田间试验,建立了叶菌唑在小麦中的残留分析方法,并对我国不同人群的膳食暴露风险进行了评价。样品用乙腈提取,经Florisil固相萃取柱净化,气相色谱-氮磷检测器(GC-NPD)检测,外标法定量。结果表明:在0.02～10 mg/kg的添加水平下,叶菌唑在小麦籽粒和植株中的平均回收率在81%～101%之间,相对标准...
Australia’s transition to management of myrtle rust
Incursion Plant Pest Transition Management Puccinia psidii sensu lato
2015/5/6
Puccinia psidii sensu lato was detected in Australia in 2010 causing myrtle rust. A nationally cost-shared eradication program was conducted based on well-established emergency response arrangements f...
Pathogenicity and Aggressiveness of Fusarium oxysporum Schl. in Bottle Gourd and Bitter Gourd
bitter gourd bottle gourd Fusarium oxysporum lagenaria ciceraria
2015/3/5
Fusarium oxysporum is responsible for a large range of diseases on economically important crops such as bitter gourd and bottle gourd. Pathogenicity and aggressiveness of F. oxysporum in bitter gourd ...
Effect of plant populations on the incidence of bean stem maggot (Ophiomyia spp.) in common bean intercropped with maize
Ophiomyia pests species damage yield advantage
2015/3/3
Effects of three intercrop combinations and plant populations on bean stem maggot Ophiomyia phaseoli; O. spencerella and O. centrosematis was observed; with the latter being reported in Morogoro for t...
Impact of climate change on the occurrence and activity of harmful organisms
climate change impacts pests diseases temperature precipitation
2015/3/3
Climate conditions exert a significant influence over the spreading, life cycle duration, infestation pressure and the overall occurrence of majority of agricultural pests and diseases. Recently there...
Climate change and its possible influence on the occurrence and importance of insect pests
climate change insect pests Czech Republic
2015/3/3
Insect pests, as widely tolerant and adaptable organisms, may be less distinctly affected by climate change than other insect species. The changing climate may affect the occurrence and impact of the ...
Preparing for changes in plant disease due to climate change
climate change population dynamics plant disease forecasting modelling mutation
2015/3/3
Climate change will change patterns of disease through changes in host distribution and phenology, changes in plant-associated microflora and direct biological effects on rapidly evolving pathogens. S...
Effect of surfactants and liquid fertilisers on transcuticular penetration f fungicides
fungicides surfactants liquid fertilisers cuticle
2015/3/1
Penetration of active compounds into the leaves plays an important role in their systemic activity. The effect of surfactants and liquid fertilisers on the penetration of fungicides was studied in mod...
The horse chestnut leafminer Cameraria ohridella: chemical control and notes on parasitisation
Cameraria ohridella Aesculus hippocastanum A. × carnea chemical control insecticides parasitisation
2015/3/1
The expected high efficacy of Dimilin but also good protection by treatment with Confidor and Calypso were demonstrated. Mospilan was less effective. A high mortality of ultimate larval instars of the...
Influence of application term on effectiveness of some insecticides against brassica pod midge (Dasineura brassicae Winn.)
brassica pod midge Dasineura brassicae oilseed rape insecticides pest control
2015/3/1
In 2005 we determined the effectiveness of two preparations against gall pod midge in dependence on different terms of application, i.e. at full flowering (BBCH 65) and after flowering (BBCH 67) of wi...
Evaluation of the efficacy of protectants against cowpea bruchids (Callosobruchus maculatus (F.)) on cowpea seeds (Vigna unguiculata (L.) Walp.)
actellic ash black pepper cloves coconut oil damage natural products
2015/3/1
A laboratory experiment of a completely randomised design and replicated four times evaluated the effectiveness to control the bruchid, Callosobruchus maculatus in cowpea by the synthetic insecticide ...