查询词典 controlled pollination

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。

About 13 months after pollination, when the female gametophyte contains some 2000 free nuclei, cell wall formation begins.

在授粉后大约 13个月，当女性的配偶体包含一些 2000个自由的核的时候，细胞壁形成开始。

Some pollination services reported losses of anywhere from 30 to 90% of their hives.

一些授粉服务商报告，全美蜂房消失从30%到90%。

Some pollination services reported losses of anywhere from thirty to ninety percent of their hives.

一些传粉昆虫的服务报告说有30%~90%的蜂房在消失。

Homogamy The condition in flowers in which the anthers and stigmas ripen at the same time, so encouraging self-pollination.

雌雄同熟：指一朵花中的花粉囊和柱头同时成熟的现象。导致发生自花授粉的可能性很大。

As a dominant party,CPC government should play a guardian,supervisee and guarantee role to overcome all the difficulties in the development of charitable cause and bring it into full play in the establishment of harmonious society on policies and regulations basis.

在中国共产党的文献中第一次把发展慈善事业提到&最广泛最充分地调动一切积极因素，不断提高构建社会主义和谐社会的能力&的高度来认识。近年来，社会学界对慈善事业的理论专著发表较多，有鉴于此，笔者不揣浅陋，谈谈自己的认识和见解。

Flow through the land, the land of the scale of operation allows the effectiveness of the land may be raised.

通过土地的流转，土地的规模经营可以让土地的效益得到提升。