查询词典 photosynthesis

In many xerophytes and in some conifers of cooler climates, where soil water may be difficult to obtain in winter, the guard cells-and hence the stoma-are sunk in pits in the epidermis, often protected by hairs form passing air currents. TRANSPIRATION rates are thus greatly reduced, while allowing gaseous exchange for photosynthesis.

一些旱生植物和寒冷气候带的针叶树在冬季很难从土壤中得到水分，因此它们的保卫细胞和气孔在表皮上下陷成为气孔窝，常被表皮毛保护，可以在满足光合作用所需的气体交换的同时防止通过的气流带走大量水分，大大降低了植物呼吸率。

And aren't both iron and magnesium needed in photosynthesis?

铁和镁不都是光合作用所需要的吗？

Tratt Photosynthesis rate Light compensation point Light saturation point

刺梨；光合速率；光补偿点；光饱和点

The result showed there existed significant differences among families in seedling growth, dry matter accumulation, leaf shape as well as root parameters at high and low nitrogen levels. Remarkable reduction in seedling height, dry matter accumulation, leaf and root parameters were observed under low nitrogen stress, whereas larger proportion of photosynthesis production was allocated into roots to promote nitrogen absorption. Family variation in seeding growth, leaf and root parameters were increased under low nitrogen stress in comparison with high nitrogen level, which would be benefit to discriminate superior L. chinense families with high nitrogen efficiency. Nitrogen efficiency of different L.

结果表明：不同氮素水平下，马褂木苗的生长、干物质积累、叶片和根系等性状皆存在显著的家系遗传差异；低氮胁迫将显著抑制马褂木苗叶片发育和根系生长，影响苗高生长和干物质积累，但低氮素水平下生产的光合产物则较多地分配至地下根系部分以促进对氮素的吸收利用；与高氮处理比较，低氮胁迫加大了苗木生长、叶片和根系参数等家系遗传分化，有利于鉴别高氮效率的马褂木优良家系。

Including the effect of climate, soil, cultivars and cultivation measures on physiological processes, such as phonological development, photosynthesis, organ building, dry matter partition and quality formation, rice growth model was dynamic mathematical model with predictability and mechanism.

水稻生长模型是集气候、土壤、品种和栽培措施等因素为一体的对水稻的物候发育、光合生产、器官建成、同化物积累与分配以及产量与品质形成等生理过程及其与环境和技术因子关系综合量化的动态数学模型，具有机理性和预测性。

At the early stage of stress (2 d and 5 d), the Pn, Tr, Ci and Gs of own-root plant were significantly decreased, while Ls was significantly increased, the inhibition of photosynthesis of own-root plant was mainly caused by stomatal factor, water use efficiency was significantly elevated, resulting from lower Pn.

在NaCl胁迫下，自根苗和嫁接苗叶片和根系中酶(SOD、POD、CAT和APX)活性和抗氧化剂含量发生明显变化，或被诱导上升，或被抑制下降，但嫁接苗各指标均显著高于自根苗，而丙二醛含量显著低于自根苗，表现出较强的抗氧化能力。

The study was carried out in order to explode the effects of shading on growth,development,quality and photosynthesis characteristics of purslanes under different light intensity.

为明确光照强度对马齿苋生长发育、品质及光合特性的影响，采用人工遮光的方法，于马齿苋苗期进行遮荫，透光率分别为100%，(50±5)%和(25±5)%。

The topics in this lab course include the following areas: Microscope and cell morphology, Cell Physiology, Enzymes, Mitosis and meiosis, Cellular respiration, Photosynthesis, Mendelian genetics, Prokaryotes, Protists, Fungi and lower Plants.

本学期课程包含显微镜介绍、各种动、植物细胞形态及构造、细胞生理现象、酵素反应、细胞有丝及减数分裂、遗传性状、细胞呼吸作用、光合作用、原核生物形态、原生生物形态、真菌形态及苔藓植物形态。

To explore the physiological functions of plastids other than photosynthesis, we examined the differences in transcription of nuclear genes.

为探明质体在光合作用以外的其它生理功能，检查了核编码基因的转录表达差异。

In addition, plant cells contain plastids that utilize light energy to manufacture carbohydrates in the process of photosynthesis.

另外，植物细胞中的质体在光合作用中利用光能产生碳水化合物，线粒体内嵴上提供了很大的表面积并分布着产ATP酶。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。