The megagamete fertility, the quantity of the anther , pollen sac wall structure and the dehiscent state, the quantity of the pollen grain were observed in the flowering phase I

第Ⅰ花期觀察供試材料的雌配子育性日本大片黄色、穎花內花藥數免费黄色网站有哪一些、花藥吐露情況www777miqi、成熟花粉囊壁的開裂狀況與結構性交黄片国产、花粉量

The development of anther and ovule followed the finish of the flower organ initiation. Pollen mother cells and well developed microsporagium wall occurred when the diameter of the bud reached about 3.0 mm, and the archesporial cell which played the role of megaspore mother cell formed in ovule when the diameter of the bud reached about 3.5 mm.

花藥及胚珠的發(fā)育與花器官的形態(tài)發(fā)生之間有明顯的連續(xù)性日韩A片网站，當花蕾直徑為3.0 mm左右時花粉母細胞及完整的花粉囊壁形成日本黄色视频亚洲，直徑達到3.5 mm左右時胚珠中出現孢原細胞的分化欧美乱伦视频，它直接起大孢子母細胞的功能。

Pollination The transfer of pollen from the anther to the stigma in angiosperms, and from the sporangiophores to the micropyle in gymnosperms.

授粉：指在被子植物中花粉從花粉囊轉移到柱頭上亚洲综合另类图片久久，在裸子植物中從小孢子囊轉移到珠孔久热精品视频。

Pollen sac A chamber in which the pollen is formed in the angiosperms and conifers.

花粉囊：在被子植物和針葉類中形成花粉的小室。

Stomia The site at which a sporangium or pollen sac ruptures to release the spores or pollen.

裂口：孢子囊或花粉囊的開裂位置国产一线高清免费A片在线观看，小孢子或花粉粒從中散出国产熟女高潮免费视频。

Hortorum tapetum indicate that:(1) the peak of metabolism of amoeboid tapetum don't occur when the cell stay at the original site, and (2) the tapetum is not immediately degenerated and provide the pollen with the available material after invasion.

天竺葵絨氈層在發(fā)育中的動態(tài)行為表明變形絨氈層的生理活動不是在細胞還在原位的時期，而且也不是當它們流入花粉囊后只是簡單地自我降解以提供花粉利用的物質亚洲中文国内精品福。

Microscopic observation on anther development process of cytoplasmic male sterile line"1815A"showed that its anther development was inhibited at the stage of archesporial cell differentiation.

以1815A不育系對應的保持系1815B作對照国产亚洲午夜精品，對不育系進行細胞學觀察，結果表明：隨著花蕾的發(fā)育在线观看黄色视频毛片，敗育的雄蕊一直處于孢原細胞時期国产迷奸在线观看，不能形成花粉囊并產生花粉母細胞，但雌蕊和維管束組織發(fā)育正常欧美一级做一级a做片性。

The tomato adult plant has the vigor, the growth good pollen, can promote the pollen through the vibration or the undulation inflorescence to disperse from the anther sac, and falls to the column head on, thus achieves the manual supplementary pollination the goal.

番茄植株具有活力啊用力插视频、發(fā)育良好的花粉，通過振動或搖動花序能促進花粉從花粉囊里散出人人操人人摸人人看，并落到柱頭上网址黄免费，從而達到人工輔助授粉的目的A片免费网址在线观看麻豆。

The tomato adult plant to have the vigor, the growth good pollen, can promote the pollen through the vibration or the undulation inflorescence to disperse from the anther sac, and falls to the column head on, thus achieves the manual supplementary pollination the goal.

番茄植株具有活力黄片v视频、發(fā)育良好的花粉，通過振動或搖動花序能促進花粉從花粉囊里散出国产欧美日韩一区二区，并落到柱頭上好黄好色成人小视频网站，從而達到人工輔助授粉的目的。

Fertilization by transfer of pollen from the anthers of one flower to the stigma of another.

花粉由一朵花的花粉囊傳遞到另一朵花的柱頭上99久久无色码中文字幕。