共查询到20条相似文献,搜索用时 78 毫秒
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LIU Jianli 《长江蔬菜》2008,(6)
从降解农药的微生物种类、农药降解的机理、影响降解因素等方面综述农药残留生物降解的研究进展,并提出了农药残留生物降解的应用现状、存在的问题及解决的途径。 相似文献
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从降解农药的微生物种类、农药降解的机理、影响降解因素等方面综述农药残留生物降解的研究进展,并提出了农药残留生物降解的应用现状、存在的问题及解决的途径. 相似文献
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苹果农药残留研究进展 总被引:8,自引:0,他引:8
概述了我国苹果中有机氯、有机磷、拟除虫菊酯、氨基甲酸酯类等农药的残留现状及农药残留分析的研究进展和存在问题,介绍了国内外当前在农药残留分析中应用的固相萃取(SPE)、超临界流体萃取(SFE)、加速溶剂萃取(ASE)、基质固相分散萃取(MSPDE)等样品预处理技术和超临界流体色谱(SFC)、色-质联用(GC/LC-MS)、高效毛细管电泳(HPCE)、酶联免疫吸附测定技术(ELISA)等检测方法的应用进展。对有关苹果农药残留的国内外标准进行了比较分析,指出了我国农药残留标准和农药残留检测方法与国外的差距。提出了我国苹果农药残留今后研究的重点和方向。 相似文献
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有机磷农药残留主要检测方法有气相色谱法、液相色谱法、免疫分析法、生物传感器检测法等,本文综述了近年来有机磷农药检测技术的研究进展,评述了各种方法的特点。 相似文献
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对山西省运城市苹果主产区的120份苹果样品中63种农药残留进行了检测。结果表明,有116份样品有检出,检出率为96.67%,共检出14种农药残留,按照GB 2763—2021判定,无超标样本,合格率100%,运城苹果农药残留处于较低水平。早熟、中熟、晚熟等苹果样品检出农药残留的种类存在一定差异。苹果中农药多残留问题应引起高度重视。对检测结果与国内外农药最大残留限量进行比较分析发现,毒死蜱等个别农药残留超标有可能引起对外贸易风险,在农药使用过程中及限量标准制修订中应予以重点关注。 相似文献
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《果树学报》2017,(1)
果品中的农药残留问题一直是果品质量安全工作中关注的重点,有机磷农药作为目前果树种植中应用最广泛的一类农药,在防治果树害虫方面占据重要地位。然而有机磷农药具有神经毒性、遗传毒性、免疫毒性、生殖发育毒性等多种潜在毒性,大量使用可能会在果品和环境中产生残留,通过环境和饮食进入人体后会对人体健康造成极大威胁。此外在果树种植过程中,往往复配或同时混合使用多种不同的农药,农药混合物的联合毒性值得引起人们更多的关注。文章归纳了有机磷农药对人体健康的影响、农药混合物的联合作用模式和评价方法,重点综述了不同实验模型在有机磷农药联合毒性中的应用和国内外研究进展,以期为今后果品中农药残留混合污染物风险评估提供相关参考依据。 相似文献
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Adrenomedullin (AM) is a new peptidergic regulator of vascular function. AM serves as a hormone, which has many biological properties, plays an important role in the many pathophysiological processes, especially shock. This review will highlight the structure. bilogical properties of AM and the relationship between AM and shock. 相似文献
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葡萄中糖基化花色苷研究进展 总被引:2,自引:0,他引:2
葡萄果实与葡萄酒的颜色由其所含花色苷的种类和含量决定,而花色苷是由花色素经过糖基化修饰转变而成,所以糖基化修饰在葡萄果实花色苷合成途径中起着重要作用。葡萄果实中的糖基化花色苷主要包括花色素的3–O–葡萄糖基和3,5–O–双葡萄糖基,即花色素单糖苷和花色素双糖苷,糖基化花色苷的组成是决定红葡萄酒品质的关键因素之一。对糖基化花色苷在葡萄果实中的组成及其对葡萄酒颜色和稳定性的影响进行了简要介绍,重点对花色素单糖苷和花色素双糖苷合成的关键酶基因以及转录因子进行了综述,以期为葡萄果实糖基化花色苷合成的调控机理的全面揭示和优质红色酿酒葡萄品种的选育提供信息。 相似文献
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苹果原生质体研究进展——文献综述 总被引:10,自引:0,他引:10
综述了近二十年来苹果原生质体研究进展。概述了苹果原生质体分离培养技术及影响分离培养的条件。通过对有关文献的分析,提出了在选用不同的原生质体起始分离材料时应重点解决的问题及今后苹果原生质体研究的方向 相似文献
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Salt stress has been applied to improve the quality of tomato, but detailed information about the changes in antioxidant systems in salt-stressed fruit is not available. In this study, we examined the effect of salt stress on oxidative parameters, antioxidant content and antioxidant enzymes in two tomato cultivars during two cropping seasons. Salt stress was applied by adding 100 mM NaCl to the nutrient solution. We show that tomato fruits have antioxidant systems to protect themselves from salt-induced oxidative stress. This finding is supported by the lipid peroxidation and hydrogen peroxide levels, which remained unchanged under salt stress conditions. However, these antioxidant systems depend on cultivars and cropping seasons. In the summer crop, the antioxidant systems in salt-stressed ‘House Momotaro’ can be attributed to the enzymatic reactions of ascorbate peroxidase (EC 1.11.1.11) and glutathione reductase (EC 1.6.4.2), while those in salt-stressed ‘Mini Carol’ can be attributed to their non-enzymatic reactions of ascorbate and glutathione. In the winter crop, the antioxidant systems were not influenced by salt stress in either cultivar. However, the proline content increased in both cropping seasons and cultivars. The seasonal and cultivar differences of salt-induced changes in the antioxidant systems may result from cultivar differences in antioxidant capacities and the interaction between salt stress and growth conditions such as temperature and solar radiation. 相似文献
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乐都县引进大樱桃效益分析及栽培技术 总被引:5,自引:1,他引:4
从气候和区域地理优势角度,对大樱桃在乐都县的发展及栽培优势作出了简单介绍,对栽培大樱桃的效益作出了分析,指出大樱桃在乐都县具有较高的栽培前景,并对大樱桃的栽培技术作了一般性介绍. 相似文献
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综述了染色体的研究方法及其在百合属植物中的应用,包括核型分析、Giemsa C–带技术、原位杂交技术。对百合倍性杂交的结果,多倍体育种的方式以及不同倍性百合作为亲本进行杂交的规律也进行了讨论。 相似文献
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Machiko Fukuda Yosuke Yanai Yuka Nakano Tadahisa Higashide 《The Journal of Horticultural Science and Biotechnology》2018,93(3):316-322
Onions normally form bulbs in the first year of growth; however, exposure to low temperatures can induce flowering (vernalisation) before bulbs are produced. Based on the cultivation data of onions grown in Japan, we evaluated and validated a reported model describing the onion vernalisation response. The observed bolting rates of ‘Sapporoki’, which was used in the construction of a previous model, were a good fit to the model, whereas, the bolting rates of one of the overwinter-type cultivars, ‘Momiji No.3?, were lower than the predicted value. The difference between the predicted and observed bolting rates in ‘Momiji No.3? was caused by a larger VD0.5, the coefficient in vernalisation response models that represents the time point when half of the plants have bolted. Overwinter-type and/or bolting resistant cultivars can have parameters that indicate a further vernalisation requirement for bolting. The parameters in our model can be customised to the cultivar being investigated, and our study suggests the viability of modelling onion bolting by using air temperature. 相似文献