micropylar 中文意思是什麼

( 4 ) fluorescent investigation shows that pollen started to germinate about 20 hours later after deposited on the stigmas, only 1 or 2 pollen tubes can penetrate ovary to micropylar end on the fifth day. callose plugs evenly formed in the pollen tube, and sometimes callus deposited randomly along pollen tube wall and even the whole tube wall. ( 5 ) 16 species of insects visited c. praecox in nanjing, belonging to hymenoptera, diptera, coleoptera, thysanoptera and spiders ( arachnoidea ) ; apis cerana cerana fabricius, aldrichina grahami ( aldrich ), epistrophe balteata de gee, musca hervei villeneuve are its main efficient pollinators

（ 5 ）南京地區蠟梅的訪問昆蟲約16種，分屬膜翅目hymenoptera 、雙翅目diptera 、鞘翅目coleoptera ，纓翅目thysanoptera 、及蛛形綱arachnoidea ，主要傳粉昆蟲有4種：膜翅目蜜蜂科東方蜜蜂中華亞種apisceranaceranafabricius 、雙翅目蠅科muscidae黑邊家蠅muscaherveivillcneuve 、麗蠅科calliphoridae巨尾阿麗蠅aldrichinagrahami （ aldrich ）及食蚜蠅科syrphidae黑帶食蚜蠅epistrophebalteatadegeer ；亮葉蠟梅的訪問昆蟲約18種，分屬鞘翅目coleoptera 、半翅目hemiptera 、纓翅目thysanoptera 、膜翅目hymenoptera 、雙翅目diptera 、鱗翅目lepidoptera ，另外有蛛形綱arachnoidea的蠟橄ch儷ononthuspr口ecox （ l

One of the nuclei at the micropylar pole becomes delimited by a small amount of cytoplasm.

珠孔端有一個核，因為帶有少量細胞質而變成界線分明。

Cortical reaction comprises latent period, developmental period, climactic period and declining period. about 35s after fertilization, a few cortical alveoli begin to discharge from the low - latitudes of the animal hemisphere, later, the same pross happens in the near of micropylar apparatus, and then cortical reaction extends to the animal hemisphere and the vegetal hemisphere

皮層反應可分為潛伏期、發展期、高潮期、衰退期， 20s開始於動物極低緯度區，稍後出現在精孔器前庭附近，隨后在這兩個始發區向四周擴散。

It was also found that the nuclear envelope disappeared earlier at the micropylar end than that at the chalazal end. the speed of the programmed cell death were different in three nonfunctional megaspores at the micropylar end and their relationships with the neighboring cells were also different. the biological significance was discussed about these phenomenon

還發現了大孢子母細胞合點端的核膜先於珠孔端的消失，並且珠孔端3個大孢子的死亡時間不同，與相鄰細胞的關系也不同，進而討論了這些現象的生物學意義。

Morphology all ephedra species from china are illustrated with great details on male and female cones. the photographs provide valuable information of characters including peduncle of cone, bract, and micropylar tube etc. for classification and identification of ephedra species from china

2 、形態學提供了中國麻黃屬種類的標本（包括模式標本）照片資料及中國麻黃屬植物的雌球花和雄球花的照片資料，為麻黃屬分類和系統學研究提供了證據。

About 2s after fertilization in 17, sperms arrive at micropylar tube ; 3s, sperm penetrates into ovum where cytoplasm is sunken ; 5s, the spermaster come into being ; 20s, fertilization stopper appears ; 60s, sperms in micropylar apparatus begin to disaggregate

精子在受精2s到達精孔管， 3s進入卵子， 5s形成精子星光， 20s形成受精塞， 60s后精孔器內精子開始溶解。有多精入卵現象，極少數卵子多精受精。

The fertilized eggs of hemibnrbus lubco have been observed by sem, tem and om, and main events of fertilization biology have been studied, too. the results suggest : the micropylar apparatus, being composed of vestibule and micropylar tube, is deeply sunken with a short tunnel

對唇（魚骨）受精過程中發生的主要事件進行組織切片、透射和掃描電子顯微鏡觀察，結果表明：精孔器屬深凹陷、短孔徑型，精孔管一次只能通過一個精子。