杂交繁育

The microspore was more like a tetrahedron, whilethe polar was more like a triangle. The number of microspore in every anther wasbetween 2600～3600, so the amount of pollen was quite large that it was propitiousto spread and pollination. P/O was 8088 and the breed system was singleheterosexual copulatoryb. The viability of pollen was normally above 50%. The testof pollen culture showed that the viability of pollen was up to the tiptop under thehigher temperature and lower humidity (38℃,40%),while it was weakest under thelower temperature and lower humidity (16℃,40%).The OCI is 4, and the breedsystem was belong to autocopulation. If it was heterosexual copulatory, there must beintermediums for pollination. It was recorded there were more than 40 species ofinsects on the anthotaxy or followers of Malania Oleifera. Under different weather,different living environments and different plants the frequency and rush hour of theinsects to visit the followers were different. Actions of different kinds of insect werealso different. According to the results of the observation, the form of fluid and seedof Malania Oleifera mostly rely on the action of insect pollination, especially thebees.

蒜头果的花序为聚伞形花序，有小花8～10朵，小花较小；按花粉大小等级划分，蒜头果的花粉粒属于小的范围；花粉粒呈近四面体，极面为近三角形：每粒花药所含的花粉粒在2600～3600粒之间，花粉量较大，有利于花粉的传播和授粉；胚珠比值为8088，繁育系统为专性异交类型；花粉生活力一般在50％以上；在不同温度湿度条件下测得蒜头果花粉的生活力在高温低湿(38℃，40％)的条件下最高，在低温低湿(16℃，40％)的条件下最低；杂交指数值为4，繁育系统自交亲和，异交，需要传粉者；记录到的访花昆虫有40余种，访花昆虫的访花频率及高峰时间不同，不同种类的昆虫的访花行为也是各有所异；从观察的结果看，蒜头果的种实的形成大多数依赖于传粉昆虫的活动，其中主要是蜂类。

But traditional crossbreeding is a slow process.

但是传统的杂交繁育是很缓慢的过程。

The alternative,"feather sexing," is a form of cross-breeding that leaves females with detectably longer pin feathers than those of their male counterparts.

但是这种方法在性别选育中并不是最常用的方法。另一种方法&羽毛性别选育法&，这是杂交繁育的一种形式。

Now animal lovers are clamoring for cat crossbreeds - and they are sparing no expense on the latest " it " pet .

现在，动物爱好者们大声嚷嚷着要杂交繁育的猫--在&个性&宠物上从不吝啬。

This is slightly more salubrious, but the long-feather gene has been linked to other traits that may be undesirable to hatcheries, such as cancer.

和雄性小鸡相比经过杂交繁育的雌性小鸡具有较长的幼羽，这一点当然是令人满意的，但是体现这种&较长羽毛&特性的基因总会同时伴随着那些可能会导致不良孵化结果的特征，例如癌症。

It was named after Dr. Zinn, an 18th century German whose hobby was hybridizing wild flowers.

百日菊的花名是以18世纪喜欢做野花杂交繁育的德国人齐恩博士的名字命名的。

Biology To crossbreed or cross-fertilize.

杂交繁育，异体受精

Optimization of breeding schemes for quality pig was studied through four parts: fixing on the breeding goal, constructing and optimizing crossbreeding system, optimizing breeding schemes for pure line breeding and reproduction population. Aim of this study was offering theory base and practice guarantee for quality pig breeding and production in China, and improving pork's competition power. Quality pig was that it has high yield, good quality and big safety.

本文通过优质猪育种目标的确定、杂交繁育体系的构建与优化、纯系繁育群育种方案的优化以及优质猪选育的其它环节四部分对优质猪的选育方案进行了优化研究，目的在于为我国优质猪(产量高、质量优且安全的猪)的育种和生产提供理论基础和实践保障，提高猪肉产品的竞争力。

When breeding schemes of pure line breeding and reproduction population in crossbreeding system were being optimized, breeding plan period 60 pig-years (1 pig year = 6 months ) was the best.

3在优质猪杂交繁育体系纯系繁育群育种方案优化时，育种规划期60 猪年(1 猪年=6 个月)最佳。

In a breeding system of commercial Imitative Local Broiler, using the Jiang-13 strains of white Plymouth Rock and Guangdong Local breed crossed with each other to produce a hybrid with rapid growth, high flavour of meat and buff feather similar to the local breed of Guangdong, the Jiang-13 strain must be of recessive white feather and, also,under the coucealment of recessive white feather, its most ideal genotype will be ees~+s~.

为了利用江-13白洛克品种鸡的优良肉用性状，用以和优质地方黄羽鸡种构成优质高产的肉鸡繁育体系——广源鸡繁育体系，使商品肉鸡具有与广东地方鸡羽色相似的浅黄羽色，参加杂交的江-13白洛克鸡必须是隐性白羽，而且基因型为iiccOObbeess最为理想。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。