黄瓜

Cinnamic acid was applied in the fifth continuous cropping cucumber soil as root exudates.

模拟黄瓜根系分泌物苯丙烯酸，外加于已连续种植5茬黄瓜的土壤中，种植黄瓜。

The antifungal activities of methanol extract and ethanol extract from Inula,helenium and different extract component from ethanol extract against Sphaerotheca fuliginea,Pseudoperonospora cubensis,Colletotrichum orbiculare,Botrytis cinerea,Fulvia fulva were tested.

以黄瓜白粉菌、黄瓜霜霉菌、黄瓜炭疽菌、番茄灰霉菌、番茄叶霉菌为供试菌，测试了土木香甲醇、乙醇提取物以及乙醇提取物不同萃取组分的抑菌活性。

An efficient and stable system for cucumber haploid production via in vitro gynogenesis wasestablished in Tianjin Keneil Cucumber Research Institute.

天津科润黄瓜研究所在国内首次通过黄瓜未受精子房培养获得单倍体植株，建立了高效、稳定的黄瓜单倍体诱导体系。

The results showed that the PCR fragment length of root-knot samples was 768bp in cowpea(RKN-1), tomato(RKN-2), balsam pear(RKN-3), Astragalus adsurgens (RKN-19)and rose(RKN-4) from Beijing, peanut fromWeifang (RKN-7) Yantai(RKN-6) and Jiaozhou(RKN-5) in Shandong, tomato from Hexian(RKN-9), cucumber from Suzhou (RKN-8) and Platycodon grandiflorum from Taihe(RKN-11) in Anhui and two kinds of tomato species(RKN-22,23) from China Central Agricultural University; the PCR fragment length of root-knot samples was 769bp in balsam pear from Ganyu(RKN-10) in Jiangsu, tomato from Kunming(RKN-12) in Yunnan, Langfang (RKN-17)in Hebei, Chengdu(RKN-18) in Sichuan and Suzhou(RKN-21) in Anhui and cucumber from Sixian(RKN-20) in Anhui; the PCR fragment length of root-knot samples was 772bp in guava(RKN-13) and pawpaw (RKN-15) from Hainan; the PCR fragment length of the other two samples was both 766bp in tomato(RKN-24,25) from China Central Agricultural University, and the PCR fragment length of root-knot nematodes in cucumber from Hangzhou in Zhejiang(RKN-16) and pepper from Anding (RKN-14)in Hainan was 767bp and 869bp, respectively.

结果表明，北京密云的豇豆、番茄、苦瓜，北京植保站月季，山东胶州，烟台和潍坊的花生，安徽和县的番茄，宿州的黄瓜和太和的桔梗，北京畜牧所沙打旺以及中国农业大学两个番茄品种(RKN-23和RKN-25)上的根结线虫种群的PCR扩增片段长度为768bp；江苏赣榆苦瓜，云南昆明，河北廊坊，安徽宿州和四川成都番茄以及安徽泅县黄瓜上根结线虫种群的PCR扩增片段长度为769bp；海南安定木瓜和石榴上根结线虫种群的PCR扩增长片段度为772bp；中国农业大学另外两个番茄(RKN22和RKN-24)品种上的根结线虫种群的PCR扩增片段长度为766bp；而浙江杭州黄瓜和海南安定胡椒上的根结线虫种群的PCR扩增长度分别为767bp和869bp。

Forβ-l,3-glucanase,its activity increased to peak level after 2 to 5 days and was 2.02 and 1.34 folds of check,then decreased rapidly and resumed to normal level after 5 and 9 days.Generally Psoralea corylifolia L.extract may enhance the activities of chitinase andβ-l,3-glucanase in cucumber leaves,then induce the enhancement of activities of defensive enzymes.

从所测定的几种酶活性变化时间来看，补骨脂提取物处理黄瓜幼苗后，首先，使黄瓜体内的几丁质酶和β-1，3-葡聚糖酶等病程相关蛋白活性升高，然后在两者的作用下，诱导了黄瓜体内过氧化物酶、多酚氧化酶、苯丙氨酸解氨酶等一些防御酶活性的提高。

The contents of putrescine were apparently higher than the control, then decreased with the increase of lead mass concentration and the time of treatment.

黄瓜幼苗叶片精胺和亚精胺在处理第5d时高于对照值，茎中精胺和亚精胺含量在处理第7d高于对照值，而其它时间内的都低于对照值，而且其含量均随铅质量浓度的增加而呈下降趋势；过氧化物酶活性变化与内源多胺含量（腐胺、精胺和亚精胺之和）的变化相似，表明铅胁迫能改变黄瓜幼苗内源多胺的含量和调节过氧化物酶活性，从而影响着黄瓜植株的生长。

The soil environment of solar greenhouse deteriorate with the growing ages increased and this causes the obstacle matters in soil of succession planting cucumber, mainly perform as soil physicochemical properties worsening, soil hypo-salinization, soil acidification. To solve these problems, corn and spring onion as catch crops were planted in summer after cucumber harvest that based on having no effect on cucumber production in solar greenhouse.. The experiment researched the effect of different catch crops on cucumber yield and soil physicochemical properties.

针对日光温室黄瓜生产中存在土壤理化性状劣化、土壤板结、盐渍化、酸化等土壤退化问题，在保证黄瓜产量的前提下，夏季休闲期选择玉米、大葱作为填闲作物，以农民传统的常规休闲作为参比对象，研究玉米、大葱对保护地土壤理化性状以及对黄瓜产量的影响。

According to sequence cluster analysis of the the tested samples, it indicates that the gene distance of RKN-9, RKN-8, RKN-21, RKN-11, RKN-18 , RKN-20, RKN-17, RKN-22, RKN-23, RKN-24 and RKN-25 to Meloidogyne incognita and Meloidogyne arenaria was very close with homology of 100% and 99%, respectively.

根据25个根结线虫种群序列比对分析和聚类分析可知，河北廊坊的番茄根结线虫、安徽宿州的黄瓜和番茄根结线虫、安徽太和的桔梗根结线虫、安徽和县的番茄根结线虫、浙江杭州的黄瓜根结线虫、四川成都的番茄根结线虫、安徽泗县的黄瓜根结线虫和中国农业大学四个不同番茄品种上的根结线虫的序列之间同源性为100％；它们与花生根结线虫和南方根结线虫(M.incognita)的遗传距离最近，序列同源性分别达到100％和99％。

Base on these phenomena, this study investigated the different responses of roots of these two species to cinnamic acid, in respect of the metabolism of reactive oxygen species, metabolism of water in plant, nutrient ion uptake and the growth in order to clarify the mechanism of the autotoxic effect of cinnamic acid on cucumber.

基于这一有趣的现象，本研究以黄瓜及黑籽南瓜为材料，通过对比研究两者受到自毒物质肉桂酸(cinnamic acid，CA)侵害时在活性氧代谢、水分代谢、养分吸收及生长等方面的响应差异，进一步探讨CA对黄瓜生理代谢过程的影响机制，主要结果如下： 1 0.25mM CA处理3天激发了黄瓜根系质膜NADPH氧化酶活性的显著提高，增加了活性氧H_2O_2和O_2~

On the basis of regeneration system of cotyledonary nodes, using Agrobacterium tumefaciens, the Mn-SOD gene was introduced into cucumber plants to express excessively, to improve ability of cleaning ROS and stress tolerance on environmental stress. The new Mn-SOD transgenic materials could be used for study of resistance physiology.

本研究在优化黄瓜再生体系的基础上，通过根癌农杆菌介导法，将Mn-SOD基因转入黄瓜植株，使SOD在植株体内过量表达，提高其在环境胁迫下清除活性氧的能力，从而提高黄瓜植株的抗逆性，并为抗性生理的研究提供有价值的材料。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。