The anther possesses four microsparangia with its wall composed of four layers: epidermis, endothecium, middle layers and a 2\|nucleate celled tapetum.

絨氈層細(xì)胞在發(fā)育后期由單核分裂為2 核A片在线，多原位解體福利彩漫，為腺質(zhì)型；但大約有12％小孢子囊的絨氈層在小孢子四分體釋放時期進(jìn)入花藥室內(nèi)国产调教视频一区二区，成為變形絨氈層黄色网,一级片,干干。

Recurvata occurred in the Posongchong Formation of Zhichang Section, Wenshan District. Detailed research shows that Huia gracilis sp. nov. has K- or H-type branching in the rhizome.

莖軸光滑，二叉分枝91绿帽论坛，直立的長楔形孢子囊側(cè)生，松散螺旋排列ww在线观视频免费观看，具長柄亚洲A片免费视频在线观看，由較小的近軸瓣和較大的遠(yuǎn)軸瓣組成，兩瓣凹凸国产顶级导航在线观看AV，開裂縫具明顯的邊緣加厚帶可以直接在线观看的AV。

Sori 1-5 pairs borne on the lower surface of ultimate lobes at the end of basal veins; indusium dehiscent in two equal halves when mature.

孢子囊群1-5對，生於末回裂片下面近基部小脈頂端欧美乱伦图片；囊群蓋成熟時對開2裂口工漫画纯彩无遮挡H动态图。

Germination rate of sporangium in different temperature, pH and nutrition was examined with suspending-drop method.

用懸滴法測定溫度、營養(yǎng)和 pH值對孢子囊萌發(fā)的影響黃色精品片免費看，用硫酸法控制小容器相對濕度和載玻片法測定濕度對孢子囊萌發(fā)的影響日韩人妻一级毛片基地。

Microspore Ye as the feather, small sporophyll sac formed by the polymerization, each polymer capsules formed by four small sporangia, small spores with dual airbags, and airbag Pinaceae pollen is similar to large sporophyll from the central axis and arranged in Brachypodium feather composition, Each Yibing has a shell bucket, each bucket containing shell upright ovules 10-12 months.

小孢子葉枝為羽狀，小孢子葉由聚合囊組成特级无码视频在线观看，每個聚合囊由4個小孢子囊組成精品视频在线免费观看，小孢子具雙氣囊，與松科植物花粉的氣囊相似欧美第一黄站视频，大孢子葉由中軸及羽狀排列的短柄組成中日欧美野外日一级黄色A片在线日，每一柄上有一個殼斗，每個殼斗內(nèi)有10—12個直立的胚珠福利午夜在线。

Thus the stamens of angiosperms and the microsporophylls of lower vascular plants are said to be homologous, being derived from a leaflike structure bearing the.

所以被子植物的雄蕊和低等維管植物的小孢子葉可以被稱為同源你懂的国产精品永久在线正确入口，源于產(chǎn)生小孢子囊的葉狀結(jié)構(gòu)男插女黄色视频免费网站。

Results:(1) The conchosporangia of brown yellow mutant was smaller and mature time was 15 days later than the parents. Thallus grew slowly in early stage, but average daily growth rate reached (7.50±1.18) cm after blade length was over 60 cm.(2)The emerald conchocelis were easy to mature and had special developmental mode that the spherulocytes can directly develop into sporangial branchlets and conchosporangia without thick conchocelis stage. Emerald blades were low in RPE with just (6.4710±0.0184) mg/g dry mass. The thallus grew quickly, average daily growth rate reached (11.95±2.33) cm after blade length was over 60 cm.(3) The conchocelis filaments of breen mutant were thin and short. Thallus grew slowly and had low contents of three phycobiliprotenin and chlorophyl.

實驗進(jìn)行50d。結(jié)果：(1)褐黃色突變體藻藍(lán)蛋白和別藻藍(lán)蛋白含量低久久支有精品；孢子囊枝的細(xì)胞較小97在视频在线观看精品，且大量形成時間比親本晚15d；幼苗培養(yǎng)初期日平均生長量僅為(1.22±0.28)cm看黄色大视频网站全在线观看，當(dāng)葉片長到60cm左右時生長優(yōu)勢逐步凸顯插进去很舒服视频，日平均生長量可達(dá)(7.50±1.18)cm；(2)翠綠色絲狀體容易成熟男人和女人操逼网站，發(fā)育方式特殊色多多在线www免费观看，營養(yǎng)藻絲不經(jīng)過藻絲加粗階段，直接由球形細(xì)胞發(fā)育成孢子囊枝和殼孢子囊色色色视频免费网址；翠綠色葉狀體藻紅蛋白含量低免费看毛片的网址，僅有(5.5130±1.0496)mg/g；葉狀體生長快速一级片入口，60cm長的藻體日平均生長量高達(dá)(11.95±2.33)cm一级二级性爱视频；(3)褐綠色突變體藻藍(lán)蛋白、別藻藍(lán)蛋白和藻紅蛋白這3種色素蛋白和葉綠素的含量均較低jiZZ成熟丰满女人；藻絲細(xì)胞短且細(xì)在线不卡精品，葉狀體生長速度較慢。

The anther was tetrasporangiate, originated from the stamen primordium. The anther wall was composed of epidermis, fibrous endothelium, middle layer (2~3 layers) and tapetum (1~2 layers).

觀光木的花藥由花藥原基發(fā)育而來真实处破痛哭视频在线观看，具4個小孢子囊人人操人人干com，花藥壁由表皮、藥室內(nèi)壁色欲色香天天综合视频观看、2~3層中層和1~2層絨氈層組成色影库。

Petals absent. Stamens (8-)10; anthers distinctive in comprising only 2 microsporangia.

萼片(4或者)5(-7)〔匏で閤xb一区二区；ò隉o欧美第1页；雄蕊(8-)10；花藥在只包括2小孢子囊過程中特別高清无码喷水黄片。

Pollen cones terminal, solitary or clustered in leaf axils, or borne in spikelike complexes; individual cones pedunculate or sessile; microsporophylls numerous, spirally arranged, with distinct adaxial and abaxial surfaces; microsporangia 2; pollen 2(or 3)-saccate in Chinese species,.

雄球花單個頂生欧美日韩一区综合，或者在葉腋簇生，或者形成穗狀復(fù)合花序日韩一区二区A片免费；雄球花有花序构越籄级视频；蛘邿o；小孢子葉許多72av你懂得，螺旋狀排列毛片在线播放网，背腹面顯著；小孢子囊2個亚洲A级免费黄片；中國的種類的花粉2 (-3)氣囊www色色，无码在线观看网址。

megasporangium：大孢子囊

孢子葉球棒狀生于枝頂,橫切面方形,孢子囊有兩種,大孢子囊(megasporangium)含4個大孢子,大孢子散布,萌發(fā)成雌配子體;小孢子囊(microsporangium)內(nèi)含多數(shù)小孢子,小孢子萌發(fā)形成雄配子體.

microsporangium：小孢子囊

橫切面方形,孢子囊有兩種,大孢子囊(megasporangium)含 4 個大孢子,大孢子散布,萌發(fā)成雌配子體;小孢子囊(microsporangium)內(nèi)含多數(shù)小孢子, 小孢子萌發(fā)形成雄配子體.配子體的發(fā)育均在孢子壁內(nèi)發(fā)育.雌配子體的發(fā)育經(jīng)過游離核階段,

microspore：小芽胞 小孢子

microsporangium 小孢子囊 | microspore 小芽胞 小孢子 | microsporemothercell 小孢子母細(xì)胞

microsporophyll：小孢子葉

雄蕊是特化的葉,故又稱小孢子葉(microsporophyll). 每一雄蕊分為花絲和花藥兩部分. 花藥產(chǎn)生小孢子,小孢子發(fā)育成花粉粒. 一般花藥有4個小孢子囊或花粉囊,左右各2個. 成熟時花粉囊壁破開,花粉散出(圖14-16).

sorus：孢子囊群

孢子葉聚集成穗狀或球狀,稱孢子葉穗(sporophyll spike)或孢子葉球(strobil);較進(jìn)化的真蕨類其孢子囊常成群聚生在葉的背面或邊緣,稱為孢子囊群(sorus);也有的(如瓶爾小草)集生在一個特化的孢子葉上稱孢子囊穗(sporangiate spike);

plurilocular sporangium：多室孢子囊

在網(wǎng)地藻屬(Dictyota)的單室孢子囊中,形成4個靜孢子;多室孢子囊(plurilocular sporangium)是由1個細(xì)胞經(jīng)過多次分裂,形成1個細(xì)長的多細(xì)胞組織,每個小立方形細(xì)胞發(fā)育成1個側(cè)生雙鞭毛的游動孢子,此種孢子囊發(fā)生在二倍體的藻體上,形成孢子時不經(jīng)過減數(shù)分裂,

androsporangium：雄孢子囊

androsome 限雄染色體 | androsporangium 雄孢子囊 | androspore 產(chǎn)雄器孢子,雄孢子,小孢子

androsporangium：雄孢子囊;小孢子囊

"產(chǎn)雄精子","androspermium ; androsperm" | "雄孢子囊;小孢子囊","androsporangium" | "間生藻的雄孢子;小孢子;小胞子","androspore"

sporangia：孢子囊

有著小葉或耳廓(pinnae)的蕨的葉子仿佛羽毛般長在葉柄上,其葉子又可分為更小的葉子,被稱為羽枝(pinnule). 帶有繁殖結(jié)構(gòu)的葉子(孢子囊(sporangia))仿佛有著棕色珠子的項鏈. 莢果蕨可以在潮濕和陰暗的花園中被養(yǎng)殖以做裝飾用.

sporangiole：小孢子囊

原配子囊 progametangium | 小孢子囊 sporangiole | 微包囊 microcyst