The results showed that with temperature decreased, levels of endogenous hormone changed obviously,such as the increase of the content of Abscisic acid,and the decrease of Gibberellic acid.

結(jié)果表明，低溫半致死溫度降低的同時(shí)色哟哟图片，脫落酸含量上升18网片禁黄网站免费观看，赤霉素含量下降，尤其值得引起關(guān)注的是脫落酸含量與赤霉素含量的比值的變化表現(xiàn)出與低溫半致死溫度更密切的關(guān)系(R =- 0 992 0 )欧美日韩一区精品视频在线观看。

The result showed that the best is Coreopsis drummondii, its semi-lethal concentration and limit concentration both reached as high as 1.4%; The next was Callistephus chinensis, its semi-lethal concentration was 0.6%, and its limit concentration was 1.2%; The middle was Althaea rosea, its semi-lethal concentration was 0.4%, and its limit concentration was 1.2%; The lower one was Rudbeckia hirta, its semi-lethal concentration was 0.4%, and its limit concentration was 1.0%.

結(jié)果表明：耐鹽性最強(qiáng)的是金雞菊欧美日韩在线观看综合，其耐鹽半致死濃度和耐鹽極限濃度高達(dá)1.4%；其次為翠菊秘书高跟黑色丝袜国产在线，耐鹽半致死濃度為0.6%自拍偷拍1，耐鹽極限濃度為1.2%；耐鹽力中等的是蜀葵18禁动漫黄片，其耐鹽半致死濃度為0.4%欧美A片黄片又黑又大岛国黄片又黑又大，耐鹽極限濃度為1.2%；耐鹽性最差的是黑心菊欧美一级牲交免费，耐鹽半致死濃度為0.4%亚洲熟妇无码一区，耐鹽極限濃度為1.0%。

The effect of formalin in seawater on P.epinepheli was that the semi-lethal concentration is 250×10-6 for 25 min,and 50×10-6 for 50 min.

海水福爾馬林對(duì)擬合盤蟲的作用表現(xiàn)為：25 min處理的半致死濃度為250×10-6国产性交A级视频，50 min處理的半致死濃度為50×10-6欧美大黑帍在线播放视频。

The ability of cold resistance of almond was analyzed by the formulation of LT50, the investigation of over-wintering, the measurement of water content in dormant period and the analysis of anatomical structure in the annual branches of two introduced varieties. The results showed: the LT50 of Fritz, Nonpareil and CK was -24.88℃,-20.56℃ and -17.15℃, respectively; the index of chilling injury of these varieties was 10%, 45% and 87%, respectively; and the classification of cold resistance was in turn high resisting, moderate resisting and easily shoot-shriveling.

通過對(duì)兩個(gè)引種扁桃扶茲和那普瑞爾1年生枝條的半致死溫度(KT50)擬合、越冬調(diào)查毛片在线播放网、休眠期的含水率及其解刨結(jié)構(gòu)的分析国产在线无码精品麻豆青青，對(duì)扁桃的抗寒力進(jìn)行了研究，結(jié)果表明：Fritzwww色色、Nonpareil及CK1年生休眠枝的半致死溫度(LT50)分別為-24.88℃无码在线观看网址、-20.56℃和-17.15℃；凍害指數(shù)分別為10%中文字幕狠狠、45%和87%性爱黄色视频A片，抗凍害評(píng)級(jí)依次為高抗、中抗无码一级做a爱过程免费视频、易抽被插黄色视频。

That is to say,the cold resistance of these trees had raised by exercise in winter. The difference of the semilethal temperature of the trees at the beginning of Sept.2003 was slight(-5.03～-6.08℃).

試驗(yàn)結(jié)果表明黄色网站视频啪啪啪，12 月底采樣樹種的半致死溫度低于9 月初采樣樹種的半致死溫度，即經(jīng)過冬季一段時(shí)間的低溫鍛煉欧美日本草逼，植株的抗寒性有所增強(qiáng)中国黑大粗硬免费视频。

That is to say, the cold resistance of these trees were close.But the difference of the semilethal temperature of the trees in the end of Dec.2003 was remarkable(-9.86～-13.48℃). The difference of the cold resistance of different tree species raised by exer-cise in winter.

月初采樣樹種的半致死溫度相差不大(-5.03～-6.08℃)，即未經(jīng)低溫鍛煉時(shí)亚洲黄网免费，6個(gè)樹種的抗寒能力相近普通话对白刺激；而12 月底采樣樹種的半致死溫度相差較大(-9.86～-13.48℃)，即經(jīng)低溫鍛煉后男人插入女人黄色网站，6 個(gè)樹種的抗寒性差距增大久操性综合手机在线视频。

When EMS was applied, it was found that 2.0% EMS resulted the highest microkernel rate (15.6‰). Treating the materials with 2.0% EMS for 4 hours could lead to semi-lethal. Cytological observations found that chromosome aberration phenomena such as single microkernel, double microkernel, three microkernel, chromosome bridge, resort chromosome and syncytium were presented in the mutants.

EMS誘變途徑中，濃度為2.0 %處理時(shí)間為4 h的組合獲得最高的微核率（15.6‰）26uuu.com，EMS濃度為2.0 %處理時(shí)間為4 h的組合使材料達(dá)到半致死在线国产首页；細(xì)胞學(xué)的觀察看到了單微核、雙微核日韩Av无码精品人妻系列、三微核精品一级片免费、染色體橋、滯留染色體和合胞體等染色體畸變現(xiàn)象国产一区二区视频www乱伦，再生苗中發(fā)現(xiàn)了1棵變異株欧美精品a欧洲黑人aⅴ精品。60Co輻射的誘變途徑中，20Gy的劑量使不定芽半致死色呦呦在线二区，再生苗中發(fā)現(xiàn)了1棵變異株老人把我添到了高潮A片。

Polyhedrin and virion, which were isolated and purified from Agrotis setegum nuclear polyhedrosis virus, are administered to 3-instar Heliothis armigera larvae with Heliothis armigera nuclear polyhedrosis virus. Both polyhedrin and virion could increase mortality of H. armigera larvae, shorten half mortality time and decrease half mortality concentration.

對(duì)黃地老虎核型多角體病毒的多角體蛋白和病毒粒子組分進(jìn)行分離純化，分別與棉鈴蟲核型多角體病毒混合感染三齡棉鈴蟲幼蟲中国毛片网址是英文吗，發(fā)現(xiàn)此二種組分均能夠提高棉鈴蟲幼蟲的死亡率手机看黄色网站亚洲，縮短半致死時(shí)間，降低半致死濃度国产在线AAAAAA片。

There are experimental results as follows:(1) Eriophorum comosum Nees shows strong cold resistance in plasmalemma permeability research. The lethal temperature of Eriophorum comosum Nees is the lowest LT_(50 in comparison with another two plants and is lower than -11.5℃ in August 2005 and December 2005; Soluble protein content of each plant is rising before or after cold hardiness. By SDS-PAGE, Protein band is analysed. Band quantity of Eriophorum comosum Nees is the most and its band color is darkest.(2) Soluble sugar content of three plants after cold hardiness are higher than before cold hardiness, moreover soluble sugar content after cold hardiness shows a decline and there is a narrow range in Eriophorum comosum Nees; Free Proline accumulation is changed by cold stress, and cold resistance is relative to free Proline accumulation; chlorophyll content of both three plants, including chlorophyll a, chlorophyll b and chlorophyll a/b, show a decline tendency along with the descent of temperature. Cynodon dactylon is highly sensitive to cold stress.(3) The soil POD and urease activities' absolute value of Erioophorum comosum Nees and Pogonatherum panideumHack were more than that of Cynodon dactylon before or after low temperature stress, especially POD activities.

實(shí)驗(yàn)結(jié)果表明：(1)在膜透性的研究中久久99高清视频，叢毛羊胡子草抗寒性最強(qiáng)，采用電導(dǎo)率法測(cè)得半致死溫度LT_(50最低高清无码aaaaa特级黄色视频免费看视频，叢毛羊胡子草抗寒鍛煉前后半致死溫度LT_(50均小于-11.5℃禁18岁黄色视频在线观看；在可溶性蛋白含量研究中，抗寒鍛煉前后三種植物的可溶性蛋白含量均增加国产女同一区二区在线视频，同時(shí)采用SDS-PAGE法欧美视频在线视频免费观看免费观看免费，通過對(duì)蛋白條帶分析，以叢毛羊胡子草條帶數(shù)最多且著色深av黄色免费观看；(2)在可溶性糖的研究中91超碰永久地址，三種植物經(jīng)抗寒鍛煉后葉片可溶性糖含量都比抗寒鍛煉前高，且經(jīng)過抗寒鍛煉后三種植物可溶性糖均呈下降趨勢(shì)亚洲免费黄色网站视频，叢毛羊胡子草可溶性糖含量下降較衱wwcao∨访兰で橐磺咔迨悠翟谙吖劭矗粡挠坞x脯氨酸含量可知，低溫的脅迫影響了植物葉片游離脯氨酸的含量變化日韩美女A片，植物的抗寒性與游離脯氨酸有關(guān)蜜臀亚洲精品国产AⅤ综合第一；低溫脅迫下三種植物葉綠素含量隨著溫度的下降，葉綠素含量在线观看国产美女精品、葉綠素a亚洲精选无码精品、葉綠素b和葉綠素a／b均呈下降趨勢(shì)，狗牙根對(duì)低溫脅迫最為敏感色七七国产精品；(3)低溫鍛煉前后精品国产一区二区亚洲人成毛片，叢毛羊胡子草和金發(fā)草的土壤過氧化物酶與脲酶活性的絕對(duì)值均大于狗牙根的，特別是過氧化物酶国产激情一区二区三区无码，說明叢毛羊胡子草和金發(fā)草的酶活性大于狗牙根的久久综合综合久久综合。

Mmol/L to juvenile Japanese sea bass, and 75.86, 63.46, 56.42 mmol/L to black rockfish. When pH is steady at 8.40 + 0.10, the 24-, 48-, 96-hour LC50 of Alk are 72. 79, 65. 28, 57. 92 mmol/L to Japanese sea bass, and 69. 47, 59. 37, 51. 96mmol/L to black rockfish. It is obvious that the toxicity of Alk to fish increases with the progressive increase of Alk or time when pH is at a constant level.3. According to analysis of variance of orthogonal test, pH and Alk have signification effects on the mortality rate of black rockfish.

pH在正常養(yǎng)殖范圍時(shí)，通過堿度對(duì)海水魚類鱸魚人人操V潮、黑鲪的急性毒性試驗(yàn)，得到pH=8.10±0.10時(shí)69操碰人操女人色，堿度對(duì)鱸魚稚魚(體長(zhǎng)1.6～2.2cm)24av毛片对白、48、96h的半致死值為60.88免费的三级网址、44.36日韩在线一区二区三区免费视频、36.06mmol／L，安全濃度為7.07mmol／L网站色色色色色；pH=8.05±0.10時(shí)久久综合国产精，堿度對(duì)黑鯧幼魚24、48樱桃视频下载ios、96h的半致死值為75.86免费视频黄片、63.46、56.42mmol／L国在线se视频，安全濃度為13.32mmol／L.pH=8.40±0.10時(shí)影音先锋每日全部新资源，堿度對(duì)鱸魚幼魚24、48999黄色com、96小時(shí)的半致死值為72.79欧美性爱激情图区、65.28、57.92mmol／Lwww.激情小说，安全濃度為15.76mmol／L黄色视频观看免费；對(duì)黑鲪幼魚24、48欧美在线艹、96h的半致死值為69.47花蝴蝶视频在线观看、59.37国产盗摄Aⅴ一区二区、51.96mmol／L，安全濃度13.01mmol／L海外黄色视频。

anaerobe：厭氧菌

(5)厭氧菌(anaerobe)厭氧菌有以下幾個(gè)特點(diǎn):分子氧對(duì)它們有毒,即使短期接觸空氣,也會(huì)抑制其生長(zhǎng)甚至致死;在空氣或含10%CO2的空氣中,它們?cè)诠腆w或半固體培養(yǎng)基的表面上不能生長(zhǎng),只有在其深層的無氧或低氧化還原勢(shì)的環(huán)境下才能生長(zhǎng);

lethargic：無生氣的,昏睡的

lethal致死的,致命的 | lethargic無生氣的,昏睡的 | lukewarm不熱情的,半心半意的

semiconscious：意識(shí)半清晰的

semicoma 半昏迷 | semiconscious 意識(shí)半清晰的 | semilethalis 半致死因子

semilethal：亞致死的

semihomology 半同源 | semilethal 亞致死的 | semilethal gene 半致死基因

semilethal gene：半致死基因

semilethal 亞致死的 | semilethal gene 半致死基因 | semilunar valve 半月瓣

Balanus albicostatus：白脊藤壺

形態(tài)的錫對(duì)白脊藤壺(Balanus albicostatus)第二期無節(jié)幼體的急性毒性效應(yīng),報(bào)告了各重金屬在作用時(shí)間為2、4视频一区二区公开、8亚洲国产精品无码第一二区、16和24h時(shí)的最高無毒濃度、最低有毒濃度国产精美自拍视频91、半致死濃度及各有毒濃度產(chǎn)生毒性作用所需的最短作用時(shí)間.結(jié)果表明所研究的不同化學(xué)形態(tài)的重金屬對(duì)白脊藤壺幼體均具較高的毒性,

Bufo melanosticus：黑眶蟾蜍

選用我國(guó)南方自然界中廣泛分布的黑眶蟾蜍(Bufo melanosticus)的蝌蚪,通過研究廢舊電池浸出物對(duì)蟾蜍蝌蚪致死率的影響,表明蝌蚪對(duì)廢舊電池滲出液十分敏感;半致死濃度隨著時(shí)間的增加而降低.為今后的生物監(jiān)測(cè)提供可靠的半致死濃度的數(shù)據(jù).

Rhododendron molle：{黃杜鵑}

黃杜鵑(Rhododendron molle)葉提取物對(duì)桔二叉蚜(Toxoptera aurantii )有較強(qiáng)的毒殺作用.黃杜鵑葉的乙醇總提物對(duì)桔二叉蚜無翅成蚜的半致死濃度(LC50)為1 558 mg/L.在黃杜鵑葉提取物的4種萃取物中,乙酸乙酯萃取物對(duì)桔二叉蚜的毒力最強(qiáng),

Brachionus urceus：壺狀臂尾輪蟲

[關(guān)鍵詞]壺狀臂尾輪蟲(Brachionus urceus) 休眠卵 形態(tài)[關(guān)鍵詞]壺狀臂尾輪蟲(Brachionus urceus) 急性毒性試驗(yàn) 重金屬毒性 半致死濃度[摘要]研究了銅一级A片一级A片性视频、鋅、鎘日韩欧美中文字幕免费第一页、鉛離子及其混合液對(duì)壺狀臂尾輪蟲(Brachionus urceus)的急性毒性影響,實(shí)驗(yàn)結(jié)果表明,