Macrocystis and Nereocystis and is distinguished by its heteromorphic ALTERNATION OF GENERATIONS in which a large sporophyte alternates with a microscopic gametophyte, and in which growth takes place in a special meristem region on the surface of the thallus.

在這類植物的生活史中，孢子體比配子體小。配子體是由葉狀體表面特殊的分生組織區(qū)發(fā)育而來的www干干干操操操。

A division of nonflowering plants characterized by rhizoids rather than true roots and having little or no organized vascular tissue and showing alternation of generations between gamete-bearing forms and spore-bearing forms; comprises true mosses and liverworts and hornworts.

無花植物的一個亞部aa视频网站在线，以假根而非真根為特點，有小的或沒有維管組織成本人H片动漫网站在线看3D，有結(jié)合體和孢子體的世代交替；由苔蘚類組成欧美一级AA大片片免费看视频。

A small, specialized club-shaped structure typically bearing four basidiospores at the tips of minute projections. The basidium is unique to basidiomycetes and distinguishes them from other kinds of fungi.

擔子一個小的以球棒形結(jié)構(gòu)為特點的插入女人下面视频，特別是在微小凸起的尖端帶有四個擔孢子，擔子菌是擔子獨有的中文字幕乱码亚洲无线码三区，使它與區(qū)別于其它類的真菌

The results showed that masses of hypha formed in serum-induced RPMI1640 liquid medium and above 96% hypha formed; in the corn-tween80 solid medium, chlamydospore and pseudomycelium formation was evident.

結(jié)果表明九一精品视频在线免费，在含10%小牛血清的RPMI1640液體培養(yǎng)基中可見成團的菌絲形成，結(jié)晶紫芽管檢測法能定量分析白色念珠菌菌絲生長狀況草逼性爱视频日本女优；在玉米粉-吐溫80固體培養(yǎng)基中可見厚壁孢子及假菌絲形成一级黄片拍拍,免费视频。

Circle of ascus carapace egg comes elliptic, close surface is unripe, base ministry a bit sink child inside, ascus spore white is long and thin, a lot of horizontal strokes are lain between, paragraphs small are cracked ceaselessly when maturity.

子囊殼卵圓形至橢圓形，近表面生91免看，基部稍陷于子座內(nèi)性深夜免费福利视频，子囊孢子白色細長，有很多橫隔国产呦系列精品视频，成熟時不斷裂成小段国产又刺激又黄又爽又湿。

It can cause heavy losses of tomato production and friuts' quality. According to the researches of internal and external country, This review summarized the main symptoms of Fulvia fulva of tomato caused by cladosporium fulvum , the biological properties, including to form character, temperature and humidity of mycelium and spore, the outbreak of the disease, regularity of epidemic, race differentiation of different area, Maofen 802,Shuangkan 2No.should be chosen. In resisting disease ,mode of action, gene clone,gene structure,gene function and control methods of the disease.

根據(jù)國內(nèi)外關(guān)于番茄葉霉病的研究情況，綜述了番茄葉霉病的發(fā)病癥狀色欲色香天天天综合视频在线观看；病原菌的生物學特性99久久99久久久99精品齐，包括病菌的形態(tài)特征以及適宜菌絲和孢子的生長溫度（20~25℃）以及濕度（85%以上）等條件；病害的發(fā)生條件和流行規(guī)律人人操在线国产；不同地區(qū)病菌生理小種的分化情況欧美日韩经典自拍视频在线；生產(chǎn)上應選用毛粉802、雙抗2號等抗病品種福利视频自拍；番茄與病菌之間的作用機制黄色网站视频观看久操网；番茄Cf及ECP等抗病基因的克隆、結(jié)構(gòu)和功能及病害防治等方面的研究情況中日韩A级毛片大全。

In the early period of ovary development of Castanopsis delavayi, the size of ovules relative to the ovary cavity is small and rich trichomes can be found before the development of the megaspore mother cell.

高山栲在子房發(fā)育的早期胚珠在子房中占有的體積相對小精品欧美一区二区在线观看欧美熟，在大孢子母細胞發(fā)育前子房中已經(jīng)有豐富的毛被。

KM strain mice immunosuppressed with 7. 5～10mg/L DEX in drinking water had the higher oocysts output and fewer dead than other groups.(4) There was no significant difference infection rate between groups inoculated with different number CSO and groups inoculated CSO with conserved different time. Trial were divided into control, groups of 50mg/kg /d, 100 mg/kg /d and 200 mg/kg /d dose of the drug to study the anticryptosporidial activities of nitazoxanide in an immunosuppressed mice model. The experimental results showed the treatment with 200mg/kg bw /day was significant inhibition of oocyst excretion. To detect the two cryptosporidiums strain C.

實驗結(jié)果表明：C.parvum蟲種能夠感染上本實驗所采用的BALB／c和昆明小白鼠兩種小鼠好痛疼轻点好爽的视频，而C.andersoni沒有能夠感染本次實驗小鼠偷拍区图片区综合图区第一页；且從小鼠感染后的排卵囊量和小鼠的生存狀態(tài)來看，采用5～6周齡的KM鼠能獲得最大量的隱孢子蟲卵囊免费观看A级毛片在线网站，小鼠的死亡數(shù)最少在线看免费不卡毛片视频；每升飲水中地塞米松量為7.5mg～10mg組比12.5mg以上組小鼠死亡數(shù)量少，比5mg／L以下組排卵囊數(shù)量多99ri国产地址；接種不同卵囊數(shù)和卵囊的保存時間這兩個參數(shù)均對小鼠受感染后的排卵囊情況影響不大一级A一片久久无码。

Ascospores are small, hyaline, and hat-shaped, 4.5-8 microns long by 2.5-5.5 microns wide, andthey accumulate in a sticky matrix at the end of the perithecium neck where they appear as a cream to pink ball or coil.

子囊孢子小国产免费黄色网站无码，無色，帽形美女破处视频两人啪啪啪， 4.5-8微米長亚洲女人天堂网2020，2.5-5.5微米寬，他們累積在子囊殼頸口粘性基質(zhì)中日韩一区,国产二区,欧美三区，在那里他們看上去象奶油色到粉紅色的球或卷圈九九线精品视频在线观看视频26。

The fern spore, the original cell of the gametophyte, carries out asymmetrical mitosis to produce a large cell and a small cell. The small cell geminates to a rhizoid by tip growth, and the large cell further divides and develops to become a prothallus.

蕨類植物孢子作為配子體的原始細胞，通過不對稱的有絲分裂產(chǎn)生一大一小兩個細胞免费观看不卡A片视频，小細胞萌發(fā)出極性生長的假根国产又黄又粗又长的视频，大細胞繼續(xù)分裂發(fā)育為原葉體。