查询词典 pollination

The pollination vectors of Cycas elongata were studied using exclusive method and introduction insects.

利用排除法和引入昆虫的方法相结合，研究越南篦齿苏铁的传粉媒介。

On the basis of reviewing the resource status of Cycas guizhouensis in Guizhou province,the reproductive biology of this species including female/male ratio,pollination mechanism,characteristics and germination of seed,seed dispersal and natural regeneration ability were described.

在对贵州苏铁的分布及资源现状作出评述的前提下，从其植株的雌雄比及其传粉机制，种子的特征及其萌发与生长，种子的传播与其自然更新能力等方面，论述了贵州苏铁的生殖生物学特性。

Its embryo sac matures about 45 d after pollination.

在培养后期，外源激素对胚囊发育的影响很大。

Such as pollination and fertilization, endosperm development and embryogeny, development of pericarp and testa have been investigated with the light microscope.

应用光学显微镜对女贞的传粉和受精、胚乳和胚胎的发育、果皮和种皮的发育等胚胎学特征进行了研究，对木犀科六属的胚胎学特征进行了比较。

Entomophily Pollination by insects.

虫媒：是植物通过昆虫进行传粉授粉的一种方式。

The experimental results showed that the absence of effective pollination in wild peonies under natural conditions, especially between different populations, was an important cause for the declining of seed adaptability, and that seed epicotyl dormancy is an important intrinsic factor in its sexual cycle which aggravated the scarcity of wild peony seedlings and populations in nature.

实验证明：在自然状态下野生牡丹缺乏充分的传粉，特别是居群间的传粉不足，导致其种子质量低下；而野生牡丹种子特殊的萌发特性，特别是严格的上胚轴休眠，则是导致其出苗率极低及自然状态下幼苗和种群稀少的重要内因。

It is a mechanism that helps prevent self-pollination and is most common among wind-pollinated and unspecialized insect-pollinated flowers, as in figwort.

是一种避免自花授粉的机制，在风媒花和非专性虫媒花中最为普遍，比方说玄参。

Were done and no positive reaction was found.5. The DNA of the young leaves of 132 Bt transgenic plants was extracted to do PCR Five positive inversion plants were obtained and the inversion rate was 3.8%.6. The DNA of fire positive inversion plants obtained in Dl generation was extracted and tested. Two stable positive inversion plants were obtained in D2 generations.7 The way of flourescent mirror flat was used to observe the pollen tube extension circumstance in the flower post after self-pollination.

检测了132株，没有发现阳性反应。5、对转入Bt基因的132株植株的幼叶提DNA，作PCR检测。D1代获得5株阳性转化植株，分别是90035的4株，85—593的1株，转化率为3.8％。6、将D1代获得5株阳性转化植株的种子在温箱中发芽，提取DNA检测，得到D2代稳定遗传的阳性转化植株2株。7、应用荧光镜制片法观察大豆自花授粉后花粉管在花柱中延伸情况。

Pingbianensis flowers were ants (Aphaenogaster smythiesii Forel,Formicidea), springtail (Hypogastrura sp., Hypogastruridae, Collembola) and one species of beetles (Anomala corpulenta Motsch, Rutelidae). These pollinators generally have restricted movement capacities and hence promote geitonogamy or mating between individuals in close proximity within populations. The results of out crossing index pollination experiments in our study suggest that T. pingbianensis has an animal-pollinated, mixed selfing and outcrossing breeding systems.

通过对屏边开口箭的开花物候、传粉生物学、交配系统的研究以及对近交衰退的检测，结果显示：屏边开口箭单花花期约15天左右，柱头、花粉活力持续时间较长；传粉昆虫多为蚂蚁、跳虫，偶有小甲虫拜访，缺乏长距离传粉昆虫；杂交指数以及套袋试验的结果表明屏边开口箭为高度自交亲和的混交模式植物，且在幼苗早期并没有表现出明显的近交衰退现象。

It is often to the camellia, Fuchsia and bulb plants, such as pollination, is the nature of a hard-working person.

它常常给山茶、贝母和倒挂金钟等植物授粉，是大自然中一位辛勤的耕耘者。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。