繁殖

Galanthus navalis agglutinin from the bulb of sonowdrop of Amaryllidaceae has great resistance to Homoptera pests, by inhibiting their growth and fecundity.

雪花莲凝集素(Galanthus navalis agglutinin，GNA)是来源于石蒜科雪花莲的植物凝集素，对同翅目害虫有显著的抗性，可以抑制害虫的生长和繁殖。

Some of these genes have been successfully incorporated into plants . The insect-resistant transgenic plants inhibit development and decrease fecundity of homopteran insects , demonstrating practical potential of these insect-resistant genes in the control of this group of pests .

其中一些基因已被成功地转入植物体内，并且获得的转基因抗虫植物对同翅目害虫的生长，发育，繁殖能力等方面都具有一定的抑制作用，表现出这些抗虫基因在防治这类害虫中的应用潜力。

The costs of inbreeding When closely related individuals interbreed,'inbreeding' occurs ,which gives rise to inbreeding depression (which causes a reduction in offspring fitness) and increased genetic homozygosity (which reduces the possibility of evolutionary adaptation to a changing environment, and increases the possibility of extinction).

近交的代价当亲缘相近的个体进行亲繁殖时，"交近"就出现了。近交引起近交衰退和增加遗传纯合性(它降低了对于环境变化产生进化适应的可能性，而增加了灭绝的可能性)。

When closely related individuals interbreed, 'inbreeding' occurs ,which gives rise to inbreeding depression (which causes a reduction in offspring fitness) and increased genetic homozygosity which reduces the possibility of evolutionary adaptation to a changing environment, and increases

近交的代价当亲缘相近的个体进行亲繁殖时，"交近"就出现了。近交引起近交衰退和增加遗传纯合性（它降低了对于环境变化产生进化适应的可能性，而增加了灭绝的可能性）。许多物种具有防止或减少近交的机制。

When closely related individuals interbreed,'inbreeding' occurs ,which gives rise to inbreeding depression (which causes a reduction in offspring fitness) and increased genetic homozygosity (which reduces the possibility of evolutionary adaptation to a changing environment, and increases the possibility of extinction).

当亲缘相近的个体进行亲繁殖时，"交近"就出现了。近交引起近交衰退和增加遗传纯合性(它降低了对于环境变化产生进化适应的可能性，而增加了灭绝的可能性)。

One/twenty-nine chromosome robertsonian translocation was found in 4 Russion Simmental bulls, three of them were heterozygotes, one of them was homozygote.

其中3头为易位杂合体公牛，1头为易位纯合体公牛。讨论了染色体1/29易位对繁殖力的影响问题。

Seedlings was studied on the basis of propagation of different host plant species.

在不同寄主植物繁殖的基础上，研究了檀香Santalum album L。

Hosta plantaginea ; tissue culture ; rapid propagation

花叶玉簪；组织培养；快速繁殖

My Dog was a very pleasant and loving Companion to me, for no less than sixteen Years of my Time, and then dy'd, of meer old Age; as for my Cats, they multiply'd as I have observ'd to that Degree, that I was oblig'd to shoot several of them at first, to keep them from devouring me, and all I had; but at length, when the two old Ones I brought with me were gone, and after some time continually driving them from me, and letting them have no Provision with me, they all ran wild into the Woods, except two or three Favourites, which I kept tame; and whose Young when they had any, I always drown'd; and these were part of my Family: Besides these, I always kept two or three houshold Kids about me, who I taught to feed out of my Hand; and I had two more Parrots which talk'd pretty well, and would all call Robin Crusoe; but none like my first; nor indeed did I take the Pains with any of them that I had done with him.

至于我的那些猫，前面也已说过，由于繁殖太多，我不得不开枪打死了几只，免得它们把我的东西通通吃光。后来，我从船上带下来的两只老猫都死了，我又不断地驱逐那些小猫，不给它们吃东西，结果它们都跑到树林里去，变成了野猫。只有两三只我喜欢的小猫被我留在家里驯养起来。可是每当它们生出小猫时，我就把小猫投在水里淹死。这些都是我家庭的一部分成员。另外我身边还养了两三只小山羊，教会它们在我手里吃东西。此外，还养了两只鹦鹉，也会说话，也会叫"鲁宾逊"，可都比不上第一只说得那么好；当然，我在它们身上花的功夫也没有第一只那么多。

They're very concerned about the possibility of human engineering of the reproductive process.

他们已经开始担心人工繁殖带来人造人的可能性。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。