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91在线日韩国产，孢子體比配子體小国产精品自在线拍国产下载。配子體是由葉狀體表面特殊的分生組織區(qū)發(fā)育而來(lái)的。

Ananisogamy The sexual fusion of nonidentical gametes. Anisogamy grades from situations in which the gametes differ only in size to the extreme of oogamy, in which one gamete is a large nonmotile ovum and the other a small motile sperm.

異配生殖：不相同的兩個(gè)配子的結(jié)合叫做異配生殖网站网站AA片，通常是一個(gè)大而運(yùn)動(dòng)能力遲緩的卵和一個(gè)小而運(yùn)動(dòng)能力強(qiáng)的精子結(jié)合91啪在线观看。

The smaller of a pair of conjugating gametes, usually the male, in an organism that reproduces by heterogamy.

小配子一對(duì)并合配子中較小的一個(gè)，通常是由異配產(chǎn)生的有機(jī)物中的雄性

Either of two conjugating gametes that differ in structure or behavior, such as the small, motile male spermatozoon and the larger, nonmotile female ovum.

異形配子在結(jié)構(gòu)或行為上不同的兩個(gè)配合配子之一瑟瑟欧，如小的能動(dòng)的雄性精子與大的不能動(dòng)的雌性卵子

Either of two conjugating gametes that differ in structure or behavior,such as the small, motile male spermatozoon and the larger,non motile female ovum.

異形配子在結(jié)構(gòu)或行為上不同的兩個(gè)配合配子之一国产特黄激情AAAAA视频，如小的能動(dòng)的雄性精子與大的不能動(dòng)的雌性卵子

Monosomic 3, monosomic 5, monosomic 10, trisomic 4 and trisomic 5 as experiment materials, their meiosis behavior of pollen mother cell, pollen characteristics, physiological and biochemical characteristics of anther, section observation of pollen development and the structure of embryo sac were studied, and the effects on the seed set and transmission rate were analyzed.

本文以大白菜同源四倍體小孢子培養(yǎng)產(chǎn)生的且已鑒定為3號(hào)單體、5號(hào)單體观看青草视频在线、10號(hào)單體玖玖资源网在线、4號(hào)初級(jí)三體、5號(hào)初級(jí)三體的非整倍體株系及二倍體株系等為試材91交换，對(duì)各材料的結(jié)籽率性色在线播放免费人成片、雄配子傳遞率進(jìn)行了統(tǒng)計(jì)，并對(duì)花粉母細(xì)胞減數(shù)分裂行為黄片二级在线观看、花粉特性国产超级碰AV、花粉發(fā)育和胚囊結(jié)構(gòu)以及花藥生理生化特性等方面進(jìn)行了觀察研究，進(jìn)而分析了其對(duì)大白菜單體n-1雄配子和三體n+1雄配子傳遞率的影響口爆女神。

It was the favourite wish of his mother, as well as of her's. While in their cradles, we planned the union: and now, at the moment when the wishes of both sisters would be accomplished in their marriage, to be prevented by a young woman of inferior birth, of no importance in the world, and wholly unallied to the family!

他們?cè)趽u籃里的時(shí)候在线欧美性色妞AⅤ高清视频，我們就打算把他們配成一對(duì)；眼見(jiàn)他們小兩口子就要結(jié)婚欧美日韩在线一区不卡二区，老姐妹倆的愿望就要達(dá)到A级日本乱理论片免费入口，卻忽然來(lái)了個(gè)出身卑賤、門戶低微的小妮子從中作梗好男人视频在线社区www，何況這個(gè)小妮子跟他家里非親非眷久色入口！

Though the gametic nucleus of normal cell didn't enter the amicronucleate cell, there were cytoplasm and organelle exchanges between two cells.

在接合對(duì)中，有小核細(xì)胞一方可以完成正常的減數(shù)分裂過(guò)程色综合精品，既有配子核的形成日韩在线精品福利网页观看视频、配子核的融合、配子核分裂在线AA亚洲视频，最終形成兩個(gè)有小核的子細(xì)胞国产黄色av大片。

It is the first time that these phenomena were observed: Two nuclei are surrounded by plasma and locate at the central of the female gametophyte and the others nuclei are positioned at the fringe of the female gametophyte; Before the pollen tube enters the female gametophyte. the nuclei in chalazal end begin splitting of plasma and form multinuclear cell.4. The pollens of Gnetumc are spherical or applanate with single aperture. The ornamentation of exine is spine. The basis part of spine is lenience and the top part of spine is tip or obtuse sphere.

首次在買麻藤屬植物的雌配子體中觀察到2個(gè)游離核位于配子體的中央位置羞羞视频免费看网站，且被一團(tuán)原生質(zhì)所包圍的人人爱人人上人人操台湾，其余的游離核位于邊緣的現(xiàn)象以及花粉管進(jìn)入雌配子體前，合點(diǎn)端的核已經(jīng)發(fā)生胞質(zhì)分裂形成多核細(xì)胞的現(xiàn)象 4亚洲91九色视频、買麻藤的花粉近球形或扁平型人人人人看人人人人操，有單萌發(fā)孔，外壁表面具小刺狀紋飾，小刺基部寬大强制高潮18XXXX按摩免费视频，末端尖或鈍圓欧美最婬乱婬暴婬性视频。

Dendrocalamus sinicus ; reproductive organs ; megasporogenesis ; microsporogenesis ; male gametophyte ; female gametophyte

巨龍竹；生殖器官久久99久久99久久这里只有精品资源；大孢子發(fā)生日韩A片视频免费观看；小孢子發(fā)生；雄配子體亚洲国产另类久久久精品红牛；雌配子體

Male gametocyte：小配子體

male gamete 男性配子,雄配子 | male gametocyte 小配子體 | male gametophyte 雄配子體,雄性配子體

microgamete：小配子

如果融合的兩個(gè)配子在大小、形狀及機(jī)能上均不相同,則稱異形配子(heterogamete),根據(jù)其大小不同69国产精品视频免费AAAA、分別稱為大配子(macroga-mete)及小配子(microgamete),大国产一级毛片AAA高清、小配子從僅略有大小的區(qū)別,分化到形態(tài)與機(jī)能完全不同的精子(sperm)和卵(ovum).

microgamete：小配子,雄配子

microfluorophotometry 顯微熒光光度法 | microgamete 小配子,雄配子 | microgamy 小型配子結(jié)合

microgamete：雄配子,小配子

\\"微生物群\\",\\"microflora\\" | \\"雄配子,小配子\\",\\"microgamete\\" | \\"雄配子細(xì)胞,小配子細(xì)胞\\",\\"microgametocyte\\"

microgametocyte：小配子母細(xì)胞

裂殖子經(jīng)過(guò)多次生殖之后,部分的裂殖子分別分化成大配子母細(xì)胞(macrogametocyte)及小配子母細(xì)胞(microgametocyte),由大、小配子母細(xì)胞再分化形成大又粗又硬又黄的淫秽视频、小配子,大配子不善于活動(dòng),也稱雌配子(famalegamete),小配子具鞭毛,可以游動(dòng),

microgametocyte：小配子體

在宿主細(xì)胞內(nèi)部,雄性配子體(亦稱小配子體(microgametocyte))進(jìn)行核的分裂(karyokinesis),產(chǎn)生出許多具有鞭毛的小配子(microgamete);同樣,雌性配子體(亦稱大配子體macrogametocyte))也進(jìn)一步形成一個(gè)個(gè)大配子(macrogamete);小配子使大配子受精后,

microgametocyte：雄配子體,小配子體

microfilaria 微絲蚴 | microgametocyte 雄配子體,小配子體 | miracidium 毛蚴

microgametophyte：小配子體

小配子 microgamete | 小配子體 microgametophyte | 小噴穴 spiracle

microgametophyte：小配子體;雄性配子體

小配子發(fā)生;小配子形成 microgametogenesis | 小配子體;雄性配子體 microgametophyte | 小配子型;小配子接合 microgamy

microgamy：小配子生殖 小體配合 配子小型

microgametogenesis 小配子發(fā)生 | microgamy 小配子生殖 小體配合 配子小型 | microgap 微間隙