On the antagonistical mechanism,it is suggested that the poison of Cd on tobacco could be impaired by Fe supply in Cd pollution area.

結(jié)果表明：Cd色诱久久av无码电影网站、Fe无遮挡奶头污免费网站、Cd+Fe和Fe+Cd處理均不改變氨基酸的種類組成；Cd對(duì)煙草葉片氨基酸含量的影響比Fe大91香蕉国产在线观看人员青；Fe抑制Cd對(duì)氨基酸含量的影響人操在线视频97，Cd也抑制Fe的作用，Cd與Fe相互拮抗欧美视频在线观看熟，并初步探討了拮抗機(jī)制一级免费看；建議在Cd污染地區(qū)通過施加Fe來減輕Cd對(duì)煙草的毒害。

He watched oat seedlings warn each other of danger by releasing jasmonate acid, and tracked the dropping of poisoned leaves by the Sonoran brittlebush to ward off competition.

他觀察到燕麥秧苗通過釋放茉莉酮酸酯來互相提醒危險(xiǎn)国产一级精品A级毛片，并追蹤凋落的被索諾蘭矮灌木毒害的葉子的蹤跡在线观看资源av，以避開競(jìng)爭(zhēng)。

Caudatum was studied. 0.05 mg/L could be the critical mass concn. of P. caudatum fitting to Cu(superscript 2+).Below this concn., the polysaccharide content in P. caudatum was increased in a small range with the increment of mass concn. of Cu(superscript 2+),then the growth and propagation of P. caudatum was strengthened and above this concn., the polysaccharide content was decreased significantly with the increment of mass concn. of Cu(superscript 2+), then the growth and propagation of P. caudatum began to be restrained obviously and the poison was more obvious when the concn.

結(jié)果］0.05 mg/L可能是大草履蟲適應(yīng)Cu(上標(biāo) 2+)的臨界質(zhì)量濃度一级欧美一级日韩α片，低于此濃度時(shí)曰本色色片，大草履蟲體內(nèi)的多糖含量隨著Cu(上標(biāo) 2+)質(zhì)量濃度增大而呈現(xiàn)小幅度的增高，大草履蟲的生長(zhǎng)繁殖得到增強(qiáng)亚洲音影先锋在线，高于此濃度時(shí)国产一级A片午夜无码免费视频，大草履蟲體內(nèi)的多糖含量隨著Cu(上標(biāo) 2+)質(zhì)量濃度增大而顯著地降低，大草履蟲生長(zhǎng)繁殖開始明顯受到抑制99re6，且濃度越高受毒害越明顯丝袜脚交一区二区免费看。

The purpose was to discuss the toxicity mechanism of chromic stress on solanaceous vegetable.

［目的］探討鉻脅迫對(duì)茄果類蔬菜的毒害機(jī)理。

This paper researched cabbage of Cruciferae colewort by planting cabbage in soils which were polluted by cadmium of different concentration. We analyzed poison of cabbage which was polluted by cadmiums in different concentration by using OCT machine system to measure cabbage lamina and observing physical change of fabric of cabbage, and confirmed the characteristic of Cadmium circulation of supergenic geochemistry accordingly.

本文主要以十字花科蕓苔屬植物甘藍(lán)為研究對(duì)象A片在线视频免费看，通過在不同濃度的受鎘離子污染的土壤中進(jìn)行種植www.日韩免费，觀察甘藍(lán)組織結(jié)構(gòu)物理表征變化，并應(yīng)用光學(xué)相干層析成像系統(tǒng)（Optical Coherence Tomography无码毛片一区二区三区本码，OCT）對(duì)甘藍(lán)葉片組織樣本檢測(cè)其變化情況欧美精品第五页，從而分析得出不同鎘離子濃度對(duì)甘藍(lán)的累積毒害作用以及鎘的表生地球化學(xué)循環(huán)特點(diǎn)。

A hydroponical experiment was carried out to study the toxicity of copper, cadmium and their combined pollution on ultrastructure of Commelina bengalensis Linn. Transmission Electron Microscope was used to investigate the effect of heavy metal on ultrastructure of different parts of plants.

為了解銅最近最新2019中文字幕免费看视频、鎘對(duì)泡泡草根看一级免费的黄色网站、莖、葉細(xì)胞亞顯微結(jié)構(gòu)的毒害及作用位點(diǎn)大黑吊日逼视频，以期為進(jìn)一步研究鴨跖草屬植物的耐重金屬機(jī)理提供理論基礎(chǔ)欧美www.，本文通過透射電子顯微技術(shù)研究了75 μmol·L-1銅和50μml·L-1鎘及其交互污染對(duì)泡泡草根、莖日韩精品网站日韩在线播放视频免费、葉細(xì)胞超微結(jié)構(gòu)的影響和銅最新中文字幕在线第一页、鎘在細(xì)胞中的分布。

Usually, I'm not the one to accuse games for corrupting our youth, but this is quite insane.

通常日韩一级婬片A片免费手机版，我并不是那種指責(zé)游戲毒害少年的人91精品专区，但這個(gè)游戲真是太荒唐了黄片地址免费。

The result indicated, In the MS culture medium, and the damagement increased with Pb(superscript 2+) concentrition, when Pb(superscript 2+) concentration was up to 1000μmol/L, the callus was geatly damaged and its character is small, hard, skin drying; Organic acid of suitable concentration was able to improve the induction and growth of rice callus under the Pb(superscript 2+) stress, i.e. ascorbic acid, critic acid and oxalic acid The effect was the best which added 750 mol/L citric acid in MS culture medium, the callus was fresh, light yellow, loose, the surface moist. and survival was as higher as controlled treatment.

而添加不同有機(jī)酸（抗壞血酸、檸檬酸和草酸）均可明顯改善Pb(上標(biāo) 2+)脅迫下愈傷組織的生長(zhǎng)18岁以下禁止进入黄色网站，尤以750μmol/L檸檬酸對(duì)Pb(上標(biāo) 2+)毒害的緩解效果最佳亚洲综合另类图片久久，其愈傷組織塊顏色淺黃，表面濕潤(rùn)欧美成在人现视频，愈傷組織成活率高国产一线高清免费A片在线观看，與對(duì)照愈傷組形態(tài)較接近。

As for Leucaena leucocephala seedlings, MDA is not the main product of lipid peroxidation and Tephrosia candida seedlings do not only rely on SOD and POD action to reduce active oxygen content. Through comprehensive analysis on water holding capacity of leaf, cytomembrane permeability, MDA content and SOD, POD activity, Dodonaea viscosa seedlings show the highest drought resistance, then Leucaena leucocephala, Tephrosia candida the last.

干旱脅迫對(duì)銀合歡膜系統(tǒng)損傷生成的主要降解產(chǎn)物不是MDA国产自偷自偷免费一区；山毛豆清除活性氧毒害作用主要不是通過SOD和POD的作用亚洲中文国内精品福；通過葉片相對(duì)保水力測(cè)定及膜透性、MDA相對(duì)含量无码aiai、酶活性變化情況的分析在线观看黄色视频毛片，3個(gè)樹種中坡柳耐旱性最強(qiáng)，其次為銀合歡女人丨8毛片一级毛片，山毛豆居后欧美一级做一级a做片性。

To provide sciencetenability for bioremediation of copper contamination and its toxicity, copperaccumulation and the adaptation of Eichhornia crassipes to copper stress wereinvestigated in this study. Further study was carried out for copper-removal of acopper-resistant strain isolated from the root of E.

本研究通過分析鳳眼蓮對(duì)銅的累積作用及其生理響應(yīng)，闡明銅脅迫下鳳眼蓮的生理適應(yīng)機(jī)制大陆免费高清不卡黄色视频，并探討鳳眼蓮根系抗銅菌的去銅作用及其在緩解菹草銅脅迫毒害中應(yīng)用潛力成年美女黄网站18禁免费动态图。