1、

They were maintained by normal self-pollination.

它们保持正常的自花授粉繁殖.

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2、

Early archegonial development is already evident two weeks after pollination.

颈卵器的早期发育在授粉后两周内就业已明显.

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3、

Fruits and embryos were obtained by self-pollination of Avignon and Lilium brownii.

俄维农自交和野百合自交可以获得自交果实和自交胚.

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4、

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

授粉是机械地把花药里的花粉传送到柱头上去.

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5、

This eliminates the possibility of self-pollination.

这减少出现自花授粉的可能性.

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6、

Self-pollination, and subsequently self-fertilisation, in orchards always takes place to some extent.

在种子园中,常常有某种程度的自花传粉和随后地自花授精.

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7、

Clearing a surround to the orchard, will significantly reduce background pollination to very low levels.

在种子园周围只要清除出一条隔离带, 便可显著地使外来传粉减到最低水平.

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8、

Use of controlled pollination is generally confined to various types of research.

控制授粉的应用,一般只限于干不同的研究工作.

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9、

It helps to promote cross-pollination and is often combined with self-incompatibility.

这种现象在许多特化的 虫媒花 中较常见,尤其是通过蜜蜂传粉的花.

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10、

Supplemental mass-pollination can substantially increase the seed yields in many cases.

在许多情况中,辅助混合授粉实际上可以提高种子产量.

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11、

Self-pollination, and subsequently self-fertilization, in orchards always takes place to some extent.

在果园中,常常有某种程度的自花传粉和随后地自花授精.

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12、

They damage female strobili during the interval between pollination and fertilization.

在传粉与受精的间隔期间,他们毁坏了雌球花.

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13、

The flowers get pollination by insects.

这些花通过昆虫授粉。

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14、

It'seems that pollination also involves certain chance factors.

似乎传粉还包含有某种偶然因素.

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15、

The difference should be discernible in the time of flowering and pollination in orchards.

在种子园的开花和传粉时,可以看出这一差异.

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16、

With better cross-pollination, more seeds develop, resulting in larger fruit.

异花传粉的果实有较多的种子籽, 导致更大的果实.

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17、

The seed set was low for both natural and artificial cross pollination with only about one forth of ovules developing into seeds.

矮牡丹的结实率低,平均只有近1/4的胚珠发育成种子。

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18、

The Analysis of Study on the Benefit of Three Artificial Pollination Methods in Cotton Hybrid Seed Production

杂交棉人工制种不同授粉方法的效益分析

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19、

A Study on the Effect of Bombus terrestris Pollination to Greenhouse Cucumber

熊蜂(Bombus terrestris)为温室黄瓜授粉的效果研究

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20、

A new breed. A cross-pollination between tulips and daisies.

这是新品种,由郁金香和雏菊杂交而成.

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