pollen 中文意思是什麼

Ah above showed that the full length cdna ej175 encoded pollen allergen - like protein and could be induced by abiotic stress factors

綜合分析，推測該基因屬于病程關聯蛋白betvi家族。

The degeneration of mitochondria is one of the earliest events in pollen abortion.

線粒體的退化是花粉敗育中最早發生的現象之一。

The pollen can be carried aloft and travel great distances in the upper air stream.

花粉能被帶到高處，並在高層的氣流中被帶至很遠的距離。

At doing the pollen thing on this alaskan fireweed

在這朵阿拉斯加的野花上傳播花粉時死去了

Some people have an allergy to pollen.

一些人對花粉有過敏反應。

During pollen formation a compound is produced naturally in the anther.

在花粉形成過程中，花藥內天然產生一種化合物。

Pollination is the mechanical transfer of pollen from the anthers to the sti gmas.

授粉是機械地把花藥里的花粉傳送到柱頭上去。

Anther the part of the stamen that produces the pollen

花藥：是雄蕊產生花粉的結構。

Anther is a part of a flower that contains the pollen

花藥是花的雄蕊上帶花粉的部分。

The arboreal pollen is sparse and mainly consists of

喬木花粉含量較少，以松屬

The stamens and pistil of d. versipelis mature before the flowers open, which shows that dysosma versipelis may be autogamous. d. versipelis produce few fruits. ovaries of d. versipelis seldom develop in nature, but will develop after being pollinated with pollen of another plant

八角蓮的花在花苞未展開時，雄蕊和雌蕊便已成熟，說明八角蓮的繁育系統為自花受粉，八角蓮座果率非常低，自然狀態下，子房不膨大，人工異交后的子房有膨大現象，說明八角蓮自交低育，有生殖障礙。

( 2 ) gene flow frequency was reduced as distance from pollen donor increased and a dramatic reduction occurred at about 2 meters. the maximum distance where gene flow was not detected was 50 m for hybrid rice while it was 70 m for ms lines, with an exception that in one of the four ms lines it was detected a frequency of gene flow 2. 8 + 10 - 6 at 150 m for zhong 9a

在開花期主流風向ne的風速為0 . 2 ? 2 . 2m / sec的條件下， 2個雜交稻品種的最大漂流距離為40m ； 4個不育系的基因漂流基本上到60m為止， 70m處基因漂流頻率均降為0 ，僅中9a在150m處發現了1株basta抗性苗，經pcr檢測驗證為陽性。

The experiment was conducted in a 2. 4 ha isolated field mimic rice production practice with pollen competition. a japonica gm rice l201 containing bar gene with herbicide basta resistance was used as a pollen donor and six indica hybrid rice varieties and its male sterile ( ms ) lines and two common wild rice ( oryza rufipogon and o. nivara ) that share same aa genome with cultivated rice were used as recipients

本試驗選擇廣州作為華南水稻生態區的代表，以含bar基因（抗除草劑basta ）的轉基因粳稻l201為花粉供體，模擬大田生產實際，對轉基因向秈型兩系及三系雜交稻不育系、雜交稻品種及含aa基因組的普通野生稻的基因漂流及其影響因素進行了研究。

Effect of expansin and mixed enzymes on the wall - broking of pollen

膨脹素聯合復合酶處理對花粉破壁的影響

( 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

However, only did a few pollen germinate in inter - specific hybridization between cerasus fruticosa and c. avian and many pollen tubes are crosswise on stigma and couldn " t penetrated into style. although a few pollen tubes entered, they couldn " t continue to grow due to accumulation of callosity in pollen tubes. in view of above - mentioned results, the irregular growth of pollen was the main reason to cause the incompatibility of distant hybridization between cerasus fruticosa and c. avium

而草原櫻桃與歐洲甜櫻桃種間雜交授粉后花粉在柱頭上雖少量萌發，但花粉管在柱頭上橫向生長，或盤繞，扭曲不能伸入花柱；個別進入花柱的花粉管先端因沉積胼胝質而中途停止伸長未能進入子房到達胚珠，從而說明這種雜交授粉后花粉管的不正常行為是導致草原櫻桃與歐洲甜櫻桃遠緣雜交不親和的主要原因。

Morphology of pollen grains in camellia under light microscope

植物花粉形態的光學顯微鏡觀察

On intraspecific polymorphism in pollen morphology of caragana microphylla lam. and its two affinities

小葉錦雞兒及其兩個近緣種花粉形態種內多態性研究

The pollen can then be separated from the rest of the catkin by sieving through cheesecloth or fine screen.

以粗紗布或細篩過篩，便可將花粉同雄花序的其它部分分開。

Mechanism of 2n pollen occurring in chinese white poplar

花粉發生機制的研究