黄瓜根

This demonstrates the inhibited growth in cucumber crops is partly due to the accumulation of ROS in cucumber root induced by the low root temperature.

由此可见，低根温引起黄瓜根系活性氧的大量产生是引起黄瓜生长受到抑制的生理原因之一。

Reaction schedule of root restriction in cucumber was related to culture period and root restriction degree.

限根反应时间与栽培时期及限根程度有关，春茬12L、8L、4L处理黄瓜的限根反应时间分别为定植后49d、64d、79d，秋冬茬黄瓜的限根反应时间则分别提前了15d。

So worked resistance decrease of grafted cucumber.Grafted cucumber and squash root exudates have the inhibitory effect of germination of cucumber, elongation of root and hypocotyls, and have the same effect on squash.

南瓜和嫁接黄瓜根系分泌物对黄瓜发芽率，胚根胚轴的伸长均具有明显的抑制作用，这种抑制效果与浓度呈正相关；对南瓜发芽率及其胚根胚轴伸长的抑制也达到显著水平，这种抑制效果与浓度同样呈正相关。

Chrysosporium , soil fungal population and the plant height, stem width, and fresh and dry mass of cucumber had less change, but the occurrence of cucumber root diseases reduced greatly, with the relative disease index of wilt and root knot nematode declined by 10.2% and 14.6%, respectively.

修复处理后黄瓜株高、茎粗、鲜质量及干质量无明显变化，黄瓜根部病害明显减轻，枯萎病及根结线虫病相对病情指数分别降低10.2%和14.6%。

The plantlets of soybean, cucumber and garden balsam were inoculated by wild-type Agrobacterium rhizogenes K599, and hairy root was induced on inoculated sites in vivo. The frequencies of hairy root induction from wound cotyledons of soybean, cucumber and garden balsam were 100%, 65% and 91%, respectively.

利用野生型的发根农杆菌K599对属于不同科属的大豆、黄瓜和凤仙花进行活体感染实验，结果表明，发根农杆菌K599可使切割后的大豆、黄瓜和凤仙花子叶形成不定根，生根频率分别为100%、65%和91%。

Installing a breathable plastic pot mendicancy at the different position of vessel base to improve the rhizosphere ventilation environment to study the effects of three of different rhizosphere ventilation environment on potted cucumber at the initial stage of growth (the distance to pot mendicancy is 2, 4 and 6 cm, and show them with IC1, IC2, IC3 respectively).

为改善容器栽培根际通气环境，在距容器底部不同位置安装一透气的塑料盆托，研究了3种不同根际通气环境（盆托距花盆底部2， 4， 6 cm，分别用IC1， IC2， IC3表示）对盆栽黄瓜生长初期及根际CO2含量的影响。

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。

And Cucumis sativus L. were tested by bioassay-guided separation. The extracts from P. tomentosa flower with ethanol were extracted with petroleum ether, ethyl acetate and n-butanol. The inhibition rate of the ethyl acetate extract to growth of the 3 kinds of plant radicel were 99.89%, 63.53% and 32.74% respectively at 0.5 mg/mL concentration, and that of petroleum ether were 76.30%, 56.17% and 23.36%.

绒叶泡桐Paulownia tomentosa花乙醇提取物依次用石油醚、乙酸乙酯、正丁醇和水萃取后进行活性测定，结果表明，石油醚萃取物在浓度为0.5mg/mL时，对反枝苋、生菜和黄瓜种子胚根生长的抑制率分别为76.30%、56.17%和23.36%；乙酸乙酯萃取物在浓度为0.5mg/mL时，对反枝苋、生菜和黄瓜种子胚根生长的抑制率分别为99.89%、63.53%和32.74%。

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。

The effects of bur cucumber as rootstock on the mass of the first fruit, the number of female flowers on the main stem in 20 nodes, plant height, area of the biggest leaf, number of leaves, stem diameter, number of nodes were in the middle of the effects of black seed pumpkin as rootstock and self-rooted cucumber.

结果表明，棘瓜嫁接可使'中农21号'黄瓜的第1雌花开放期和始收期提前，对根瓜质量、20节内的雌花数、株高、最大叶面积、叶片数、茎粗和节数的影响小于'黑籽南瓜'嫁接处理；前者的抗寒能力、净光合速率强于后者和自根苗；棘瓜嫁接对黄瓜具有增产、抗枯萎病、抗根结线虫的作用，并且果实品质显著优于以黑籽南瓜嫁接的。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷