根条件

The non-rhizosphere fungi and actinomycete reached highest at the later stage under soil culture or soilless substrate culture.

非根际真菌与放线菌数量在土培和基质培条件下均于生长后期达到最高。

This result shows that if all the characteristic roots have negative real parts, under a condition, the solution of singular differential systems with delay is exponentially stable.

由此可以得到一个条件，在该条件下如果所有特征根都具有负实部，则退化时滞微分系统的解是指数稳定的。

So the present study was taken to compare the differences in the mechanisms of dissipating excess light energy in cucurbit crops and to study the differences in both the ROS metabolism in root system and the photosynthesis among six cucurbit crops with different temperature tolerance growing at different root-temperatures. The main results are as follows: 1、The species specific response of three cucurbit crops with different heat-tolerance: warm-adapted cucumber, heat-tolerant sponge gourd and heat-sensitive figleaf gourd to diurnal changes in air temperature and irradiance intensity were investigated in a typical summer sunny day. Three cucurbit species were compared using parameters in gas exchange, chlorophyll fluorenscence, photon allocation and photosynthetic electron flux.

因此，本试验以温度敏感性不同的瓜类作物为材料，研究了夏季自然条件下不同物种间在耗散过量光能的主要机制差异；探讨了它们对不同根际温度在根系活性氧代谢及地上部光合作用等方面的生理响应差异，所取得的主要结果如下： 1、在夏季晴天条件下，三种温度敏感性不同的瓜类作物：喜温的黄瓜，耐热性的丝瓜与热敏感的黑籽南瓜在气体交换、叶绿素荧光、光能分配及光合电子流对一天中温度与光照环境变化的响应上存在物种间差异和日变化特征。

It was concluded that Glomus mosseae inoculation improved the drought resistance of Broussonetia papyrifera Vent, especially in moderate stressed conditions. And the contribution of AM symbiosis to plant to avoid the stress or to increase its tolerance might be the result of modification of root morphology and fractal character.

由此作者认为，接种G.mosseae在不同土壤水分条件下促进了构树幼苗的生物量积累，这种促进作用在土壤干旱条件下尤为明显，表明AM菌根真菌G.mosseae提高了宿主构树的抗旱性；G.mosseae对宿主构树抗旱性的提高与G.mosseae对构树根系形态特征、分形特征的改变密切相关。

It was increased ethyl hexanoate synthesis substrate concentration mediated by Rhizopus chinensis 2113 whole-cell lipase after improved synthetic activity and optimized reaction condition. The reaction condition were: caproic acid concentration 2.4mol/L, substrate molar concentration ratio 1:1.1, initial water content ≤0.2%, lipase water activity 0.3~0.66, enzyme amount 16%, reaction temperature 30℃, agitation speed 150 r/min.

通过合成酶活的提高及反应条件的优化，提高了华根霉2113全细胞脂肪酶催化己酸乙酯合成的反应底物浓度，其反应条件为：己酸浓度为2.4mol/L；酸醇摩尔浓度比1：1.1；反应体系含水量≤0.2%；脂肪酶水活度0.3～0.66；加酶量16%；反应温度30℃；150r/min振荡反应。

Lysimachia christinae "Aurea" had the highest value on plant fresh weight, root fresh weight and length of branch under 27% shading, and the largest leaf area appears under shading of 73%.

金叶过路黄在遮光27％条件下，植株鲜重、根重、叶片鲜重及分枝数均最大，而其叶面积在遮光73％时最大；多花筋骨草与射干的植株鲜重在全光照条件下呈最大值。

The results showed that: 1 under the hydroponic culture established in this research, the experimental wheat plants grew well andperformed the typical architecture responses when exposed in Pi deprivation. Hemi-qantitative RT-PCR revealed that the transcriptional level of known P response gene changed dramatically; 2 In general the length of wheat root axis and the root/ shoot ratio arose when the Pi supply was deprived, however, the change models differed among different wheat genotypes. The investigation on their molecular basis would offer the useful clue for seeking high phosphorus efficiency protoplasma and gene resources of wheat.

结果表明：1在研究建立的小麦水培体系中，小麦植株生长正常并对磷饥饿胁迫条件做出发育形态建成水平的反应；半定量RT-PCR分析显示在此体系中小麦磷响应基因也在转录水平上产生显著变化；2在水培条件下不同基因型小麦对磷饥饿胁迫的反应总体上表现在根轴长度和根冠比有所提高，但不同基因型小麦的反应特点有差异；对这些反应特征的分子机理的深入分析可为有效筛选磷高效小麦新种质以及发掘磷高效基因资源提供线索。

DRG co-cultured with sciatic nerve undergoing Wallerian degeneration for 14 days in vivo in serum free DMEM/F12,1 sciatic nerve segment was added into co-culture system at the first moment, the axons were strong and straight and could adhered to each other, and the number of axons dramatically reduced compared with that of DRG cultured alone in serum free medium.

分别在无血清和有血清的条件下将新生鼠的背根神经节和体内变性14天的大鼠坐骨神经段进行联合培养作为实验组，并以在相应条件下单独培养的DRG的轴突的生长情况作为对照组来观察比较轴突的生长情况。

2DRG co-cultured with sciatic nerve undergoing Wallerian degeneration for 14days in vivo in serum free DMEM/F12,1sciatic nerve segment was added into co-culture system at the first moment,the axons were strong and straight and could adhered to each other,and the number of axons dramatically reduced compared with that of DRG cultured alone in serum free medium.2DRG cultured in serum free DMEM/F12for 4days,then the sciatic nerve segment was added into the culture system for 3days,the axons became straight and part of them adhered to each other.

分别在无血清和有血清的条件下将新生鼠的背根神经节和体内变性14天的大鼠坐骨神经段进行联合培养作为实验组，并以在相应条件下单独培养的DRG的轴突的生长情况作为对照组来观察比较轴突的生长情况。

Bipolaris sorokiniana may affect turf grass to cause leaf spot, bud rot, seedling blight, root rot, sheath rot. The temperature range of colony growth is 10～40℃, the optimum 25℃. Conidia can germinate in the temperature range of 20～35℃, and germinate best at 28℃; Conidia germinate well on slide water surface, contrary to other different methods, and they can germinate well under given air condition, but germination is not strict with nutrition. The inhibiting test of 8 kinds of fungicide showed Sporgon 50WP was most effective, and the inhibiting effect of the others was well to the conidia germination.

Bipolaris sorokiniana能浸染草坪禾草叶片形成梭形病斑，并可导致芽腐、苗枯、根腐、茎基腐、鞘腐等症状；病原菌在10～40℃下能够生长，最适生长温度为25℃；病原菌分生孢子在不同萌发条件中以水平萌发较好；分生孢子萌发需要空气条件，但对营养要求不严格；在20～35℃下分生孢子均可萌发，以28℃下萌发最好；八种不同药剂对病原菌的抑制效果表明，50%施保功可湿性粉剂1500倍液效果较好，其抑菌圈直径和抑制分生孢子萌发率分别为46.2mm和81.3%，其他几种药剂对孢子萌发也有较好的抑制作用。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。