查询词典 hand-pollination

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。

Studies conducted locally and abroad show that honeybee pollination increases crop yield by up to 40 percent.

在本地及海外进行的研究显示高达百分之四十的蜜蜂授粉提高作物产量的影响。

So the technology of introduction of exogenous DNA into tomato after pollination not only feasible within species but also feasible in over-distance hybridism and excellent gene can been transferred to the cultivate variety.

试验还选用野生种醋栗番茄作供体进行了远缘关系的分子杂交试验，以克服杨晓锋：对外源DNA导入番茄的研究远缘杂交不亲和性，将野生种抗病性强的优良性状转移到受体中来，重组优良基因培育新品种材料也获得了较为满意的效果。

You can do some assertiveness training.

你可以进行一些自信训练。

We were well on the path to making a rear-wheel-drive global platform," says Mays."

我们正致力于建立一个后轮驱动的平台，"Mays这样说道。"