根的生长

Meanwhile, roots played an important role in the regulation of stomatal behavior by delivering increased amount of abscisic acid to shoots at suboptimal root temperatures.

在不适合生长的根际温度下，植物的根系能够通过增加向地上部运输ABA的量来调节叶片的气孔导度。

In the whole growing stage from infancy to burliness, protein contents in roots, stalks and leaves gradually decline; protein contents in the leaves of glaucum and acuminate increase slightly at the beginning while descend rapidly after growing period.

从营养前期到结实期的整个生长过程中，植物根、茎、叶中的蛋白质含量总体呈逐渐下降的趋势；灰绿藜和绿珠藜叶中的蛋白质含量开始时略有增长，营养后期后迅速下降。

The sixteen plants are firstly divided into six types according to evaluation grades and subject function statistical method:the first type is Cajanus cajan and Crotalaria mucronata,the best adaptability ,which can be used pioneer plant or constructive species; the second type is Cynodon dactylon,the better adaptability, which can be used constructive species ;the third type is Eragrostis curvula, Paspalam notatum,which can be used constructive species on rotten rock slope ; the forth type is kummerowia striata,Lotus corniculatus and Vitex negundo.The adaptability is centered,and can be used protection species and auxiliary species;the fifth type is Robinia pseudoacacia,Eremochloa ophiuroides,Vitex negundo,Lespedeza formosa,Leucaena leucocephala,Desmodium sequax, Rhus chinne- nsis,which can't be plant singly and be used accessory species;the sixth is Trifolium repens,which can be used pioneer plant.

根据评价边坡防护植物适应性的十个重要指标，首次运用隶属函数和聚类分析方法，对各供试植物的边坡适应性综合排序并分为六类：第一类为木豆和猪屎豆，边坡适应性最强，适宜作为先锋植物和建群种；第二类为狗牙根，边坡适应性强，适宜与豆科植物混播，作为建群种；第三类为弯叶画眉草和百喜草，边坡适应性较强，适宜与豆科植物混播，作为风化岩边坡的建群种；第四类为鸡眼草、百脉根和马棘，边坡适应性中等，适宜作为保护种与伴生种；第五类为刺槐、假俭草、荆条、美丽胡枝子、银合欢、波叶山蚂蝗和盐肤木，边坡适应性较差，不宜单独在边坡上种植，最好与速生型豆科草本混播，作为边坡防护植物群落的辅助植物；第六类为白三叶，边坡适应性最差，但因其出苗率高、生长速度快，作为先锋植物，起到前期覆盖坡面的作用。

The intermingled roots of two plants growingclosely together improve the quality of the soil.

依偎在一起生长的两种植物的根交织在一起，能够改良土壤的质量。

Four classes of partition models , empirical models , functional equilibrium models , optimal control models , and source-sink models were reviewed in this paper. The empirical models were widely used with minimal mechanistic assumptions. The function equilibrium models were successful in the simulation of the rootPcanopy ratio at the periods of the vegetative growth , but were poor to simulate portioning among other organs. The optimal control models were suitable for the modeling under the equilibrium state. The source2sink models were the most powerful and mechanistically based models capable of simulating dynamic photoassimilates partitioning between any organs of the plants.

对于同化物分配模型按照经验模型，目的性模型，源汇关系模型进行了总结归纳，分析指出：经验性模型应用最多但机理性差；功能平衡模型在模拟营养生长阶段同化物在条与根之间的分配很成功，但应用于其它器官之间很困难；最优化模型适于模拟平衡态下同化物的分配；源汇关系模型机理性最强，可模拟任何器官间的同化物分配，应用范围最广泛。

Eichhornia crassipes was water cultured in 0, 0.01, 0.t and 0.3mgCd/L. Throughout the experiment, plants in control group grew ordinarily. Root-shaped stalk is short and strong with slender majority of fibrous roots black, Leaves were dark green and smooth. Gourd-shaped balloon is inflated and round. 80% of the plants opened bright purple flowers for 3-5 days and yielded egg-shaped fruit after 15 culturing days.

在镉浓度分别为0，0.01，0.1和0.3mg／L水培溶液中，对照组中凤眼莲在整个实验期内生长正常，根状茎粗短，密生多数细长须根，呈黑色；叶片深绿色，光滑，葫芦状的气囊膨大且圆；在培养15天时80％的植物开紫色亮丽的花朵，花期3—5天后结卵圆形果。

Turfgrass seeds of nineteen varieties were treated with the different Pb2+ concentrations of 0, 200, 400, 600mg/L, and germination potential, germination rate, root length, shoot length, fresh weight, chlorophyll content, MDA content of seedlings were determined to compare theirs lead tolerance.

用浓度分别为0、200、400、600mg/L的Pb2+分别处理19个品种草坪草的种子，测定了供试种子发芽势、发芽率、幼苗根长、苗长、鲜重、叶绿素含量、丙二醛含量等7项指标，比较19个品种草坪草生长初期耐铅性的强弱。

The result showed that mycorrhiza inoculation was beneficial to the conifers,the volume weight of the medium and the contents of P,soluble P were major factors influencing seedling growth.

结果表明：菌根接种对培育针叶树容器苗非常有利。基质的容重、全磷和速效磷的含量是影响油松容器苗生长的主要因子。

The influence on the content of Zn~(2+) is not too. The maize seedling have the mechanism of Na~+-exclusion and have definite salt tolerance, the salt tolerance was implemented by root and mature sheath, Na~+ is mainly reserved in root and mature sheath, and the content of Na~+ was less to be transported to mature blade and young blade.

玉米幼苗具有拒Na~+机制，具有一定的耐盐性，它的耐盐性是根和成熟叶叶鞘来实现的，Na~+主要贮存在根系和成熟叶叶鞘中，而向成熟叶叶片和生长叶中运输较少。

VA mycorrhizae could enhance plant dry weight and improve plant P concentration, as well as increase the resistance to drought and water utilization efficiency under water stress and normal water supply at the same P application level.

在水分胁迫和正常供水条件下，施磷量相同，接种菌根组的地上和根系生物量干重显著高於不接种组，干物质累积增加，减轻水分胁迫对植株生长的抑制程度，改善了植株体内磷素养分状况，提高了白三叶对土壤磷的有效利用及水分利用率。

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。