Egg apparatus The three haploid nuclei that are situated at the micropylar end of the embryo sac in most flowering plants. The central nucleus is the female gamete and those to either side of it are called the synergids.

卵器：在大多數(shù)顯花植物的胚囊中，位于珠孔端的三個單倍體核a片一级视频，其中卵細(xì)胞位于中央，兩個助細(xì)胞分別位于兩邊。

There are commonly eight nuclei in the embryo sac: the egg apparatus at the micropylar end, made up of an gee nucleus and two synergid nuclei; three antipodal cells at the oppsite chalazal end that probably aid embryo nourishment; and two polar nuclei in the center that fuse to form the primary endosperm nucleus.

通常胚囊中有8個核99免费强奸视频网站，卵器在珠孔端，由卵和兩個助細(xì)胞組成国产视频91拍拍阴口；3個反足細(xì)胞在合點端三级坐爱网站，可能為胚胎提供營養(yǎng)；胚囊中央有2個極核亚洲一区在线，融合在一起形成最初的胚乳核被强奸的网站全集。

Potentially polyembryonic megagametophytes at maturitycontain either a conventional 3-celled egg apparatus(92.6% of megagametophytes).or contain the supernumeraryeggs forming either a 4-celled (5.2%) or 5-celled(2.2%)egg apparatus.

二卵卵器中卵細(xì)胞和類卵細(xì)胞大都并列位于助細(xì)胞合點極上方；三卵卵器中国产精品2区，合點極兩個卵細(xì)胞結(jié)構(gòu)并行排列十八禁禁禁禁污污网站，其珠孔極側(cè)下方是另一個卵細(xì)胞結(jié)構(gòu)。

Has 3 cells in the micropyle end: 2 help the cell and 1 egg cell.

在珠孔端具有3個細(xì)胞：2個助細(xì)胞和1個卵細(xì)胞在线观看亚洲精品国产AV。

The development of embryo sac is of the Polygonum type.

珠孔受精三级片在线观看精品视频，受精作用屬于有絲分裂前類型。

DMBQ, ferulic acid and resorcin were effective chemical signal substances in the process of seed germination and haustorium formation of Cistanche deserticola. 4.The embryo is consist of 12 cells, the endosperm cell degraded so as to provide nutrition for the embryo development .As a result, germ tube differentiated from the embryo and came out through micropylar end, the small cell at the tip of the germ tube held the capacity of cleavage and the other cells grew big ,so the germ tube elongated .The anterior extremity of germ tube swelled to form haustorium under chemical substances treatment, the haustorium cell stained ,especially its portrait because of the lignification of the cells.

肉蓯蓉種子的胚是由12個細(xì)胞緊密排列形成的圓球狀胚无码中文AV波多野吉衣迅雷下载，球形原胚分裂增殖的同時日韩三级片免费在线播放，胚乳細(xì)胞分解日韩手机黄色视频，為胚細(xì)胞的增殖提供營養(yǎng)，最終胚上分化出的芽管由珠孔端冒出欧美性大片视频免费播放在线，芽管前端細(xì)胞較小人人搞人人插人人看，具有旺盛的分裂能力，后部細(xì)胞體積增大欧美一级A片欣赏久久，芽管逐漸伸長一级一a无码黄在线观看，在化學(xué)物質(zhì)的誘導(dǎo)下，芽管由中部至前端細(xì)胞膨大分化出初生吸器亚洲乱亚洲乱妇10p，初生吸器呈帽子狀人人爽人人爽人人爽人人爽，而這些細(xì)胞比其周圍的細(xì)胞著色深，吸器縱向局部區(qū)域的番紅染色加深亚洲视频精选网站，細(xì)胞高度木質(zhì)化99机这里只有精品。

Ultracytochemical localization of calcium in the stigma, style and micropyle of sunflower .

向日葵花柱和珠孔中鈣分布的細(xì)胞化學(xué)定位。

Of a plant ovule completely straight with the micropyle at the apex.

珠孔完全直向頂點18岁未进入黄片。

Of a plant ovule curved with the micropyle near the base almost touching its ''.

珠孔彎曲接近底部特级毛片在线视频免费观看，幾乎接觸了干。

At ld before anthesis, a biggest vacuole located at the micropyle end of the cell and its nucleus was pushed toward the chalazal end of the cell, which made an evident cellular polarity.

受精后合子中的鈣顆粒又明顯增多91精品国产91久久久久久最新，在核質(zhì)中分布一些較大的鈣顆粒欧美公司中文字幕在线视频，在珠孔端大液泡中聚集了較多的絮狀鈣。