查询词典 crossing

According to Griffing's method 1, diallel crossing was built and CA was analyzed. Variance analysis showed that there were the greatly significant difference among the both of GCA in inbreeds and SCA in crosses, respectively. The high GCA of 18-599 and 18-599 and the low SCA variance of their crosses showed the strong and stable heredity on the both characters. Taking them as parents, the generations with high and stable induction and regeneration will be gotten.

2选用在配合力、抗病性、农艺性状等玉米杂交育种性状与幼胚培养胚性愈伤组织诱导率和胚性愈伤组织绿苗发生数等转基因工程育种性状都表现相对十分优异的18-599、18-599和综31等3个自交系，以及杂交育种性状表现优良、但转基因工程育种性状表现极差的A318，P138和R15等3个自交系为亲本，按照Griffing方法1组配双列杂交，进行Griffing的配合力分析。

ABSTRACT It is because that the excellent acceptors for maize transgenic engineering are insufficient in our country, especially in the southwest mountain areas of china and hereditary variation regularity for the two characters such as efficiency of embryonic callus induction and number of regenerating plant (these two characters were abbreviated to the nduction efficiency and number of regenerating in the following of the paper, respectively), which hint the maize culturing capacity, is not very clear. Therefore, aiming at picking out superior acceptors, we had made systematic researches on the two characters with combing traditional quantitative-character genetic analyzing methods such as single-factor genetic mating design, diallel crossing genetic design, genetic effect analyzing method and the modern molecular locating method such as QTLs'. The main results are followed.(1) 50 superior inbred lines and about 30 crosses in our country, especially in the southwest of China were used for identifying and selecting the superior genotypes in the above two investigated characters under the same culturing condition in 2000 and 2001. There was very significant difference among the genotypes in the both characters. But the two characters were not certainly related. Some genotypes such as 18-599 and 18-599 were very good in them. For some ones such as zong 31, induction was higher than 18-599 and 18-599 in the efficiency, but it was only 1/3 to the later in regenerating number. In some genotypes such as S37, R08, R15, P138, A318, induction efficiency was just about 3% and scarcely any regenerating plants were got. On the whole, hybrids acted better than inbreeds in the both characters.(2) Two kind of inbreeds were selected as parents of the Griffing's method 1. 18-599 and 18-599 and the inbred line zong 31 are one kind because they are not only superior in the characters of maize cross breeding, such as CA, resistance to disease and the important agricultural characters, but also excellent in transformation characters as the induction and regeneration.

针对我国、特别是西南山地所需玉米转基因工程育种优良受体极为匮乏和反应玉米幼胚培养能力的2个主要性状，即玉米幼胚胚性愈伤组织诱导率和胚性愈伤组织绿苗发生数的遗传变异规律十分不清楚的实际情况，本研究从筛选玉米转基因工程所需要的优良受体入手，采用单因素遗传交配设计、双列杂交遗传交配设计、世代基因效应等传统数量性状分析方法，以及现代分子标记定位主效QTL分析方法，对玉米幼胚胚性愈伤组织诱导率和胚性愈伤组织绿苗发生数等2个性状进行了较为系统的分析研究，取得以下主要研究结果：(1)于2000年和2001年通过对我国、特别是西南地区近50份优良自交系和近30个杂交组合，在相同培养条件下，对幼胚培养胚性愈伤组织诱导率和胚性愈伤组织绿苗发生数等2个幼胚培养能力性状进行了筛选与鉴定，发现玉米不同基因型具有完全不同的幼胚培养胚性愈伤组织诱导率和胚性愈伤组织绿苗发生数，但幼胚培养胚性愈伤组织诱导率与胚性愈伤组织绿苗发生数并不具有必然的相关关系，有的基因型，如自交系18-599和18-599在胚性愈伤组织诱导率和愈伤组织绿苗发生数等2个性状都表现相当优异；有的基因型，如自交系综31，仅幼胚培养胚性愈伤组织诱导率性状表现高于19-599和18-599，但在胚性愈伤组织绿苗发生数这一性状则与它们有相当大的差距，仅为19-599和18-599的1/3左右；有的基因型，如S37、R08、R15、P138、A318等玉米自交系不仅幼胚培养胚性愈伤组织诱导率很低，平均仅在3％左右，而且胚性愈伤组织绿苗发生数表现也很差，基本上没有分化成苗。

With the rapid development of expressway and main road, more and more interchanges and fly-over crossing will be built.

随着我国公路和城市道路的迅速发展，高架道路及立体交叉工程愈来愈多。

With the rapid development of expressway and main road, more and more interchanges and fly-over crossing will be built.

随着高等级公路和城市主干道建设的快速发展，必然要修建大量的互通式立交和高架桥。

When the multiple-dimension speed space intertwines, continuous Speedscape produces multiple layers of different crossing modes, and become the available operable strategies in case project.

当多重层面的速度空间交织在一起时，连绵不断的速度空间产生了多重层面的不同的交叉方式，成为了在个案项目中实践的多种可选择的策略。

That pitiful mewing really pulled at my heart,and I found myself crossing the street to try to find her.

可是我刚要上车，又听见它喵喵叫。

Whether if you vs. of she totally it agree, she then will 258 ten thousand picture if disagree you, Show you understand if you make what atmosphere control very much romantic at all then, You will certainly love veteran if, you at all enough ripe if you go and let she often too then, She will feel irritated and oily but if you go and look for she, she will blame if any of generals wearing it you cheat emotional you of she, She will say that you are that what the play-boy wore is a bit more tattered , then you are a stolid fellow if you are jealous, She will it says to be incorrect like this but if totally jealous you, she again can think you like she you if you attempt and flirt to her at all, She will think you respect she but if well-behaved you, she again can think you like if she you come late one minute, She will complain if oneself late she how tired and more bitterly does it wait for, she will say girl it dates late to be natural if you go and look for friend of you, She will say if your picture copycat is her, she will talk about \" oh, this is very natural, Girl \" if you kiss she quickly, she will very much cold and detached if you kiss too much to say you everywhere like this, She will yell that you ate her bean curd if you have not looked after her while crossing the road, You lack morals if you look after she cross the road, she again can say this whether if trick you of man stare at a certain woman carefully then, She will criticize you to flirt and stare at to girl student she think other man everywhere, She will say that they will just appreciate if you speak with her, she hopes that it is all right that so long as you listen to if you only listen attentively to, She you speak with her again Man has seen that may say : Fly to the sky, you create take these name to have simple and complicated and weaker so living beingses woman, But so intrepid to let people angry and Cupid, please tell me should how make.

是否如果你对她全部它同意， 268，000 将然后想象如果不同意你的她，让看如果那时你确实做非常浪漫的空气控制的，你理解，你当然将爱老战士，如果，你确实足够成熟你去被让她也那时经常，她感到将激怒和油性但是如果你去寻找她，她责备将如果将军中任何人穿它你骗取易激动你她，她将说你是花花公子穿的是有点多变得破烂，然后如果你妒忌，你是一个不易激动的人，她将错误象这样但是如果全部妒忌你说，再次的她认为能你喜欢她你你试图并且确实给她调情，她认为将，你尊重她但是如果行为端正你，她再次认为能你喜欢如果她你为一分钟晚来，她抱怨将如果自己后她多疲倦和更极其做它等，她将说女孩日期是自然的后期你去寻找你的朋友，她将说是否你的照片盲目模仿者是她，她将谈论\&噢，这非常自然，女孩\&如果你吻她迅速，她将很多冷和分开你吻那么多不会象这样到处说你，她将号叫如果你在穿过道路时没照看她，你吃她的豆腐，你缺乏品行你照看如果她穿过道路，再次的她说能这是否如果计谋你人那时仔细注视一定妇女，她将批评你调情并且对她到处认为其他男人的女生注视，她将说他们将感激是否你与她谈话，她希望它好那，只要你听是否你只注意听，她你再次与她讲男人已经看见那可以说：飞往天空，你创造花费这些个名字喝简单和错综复杂和更弱的如此活着的生物妇女，但是如此无畏忿怒和丘比特，请我怎样挣。

In river crossing of long distance pipelines,hard materials such as mortared block stones and concrete are often used in traditional construction process for restoring riverbank.

长输管道穿越河流后，针对河流岸堤的恢复，传统施工工艺多采用浆砌块石或混凝土等硬质材料，与原河道堤岸不和谐，破坏了自然河流的生物链，而生态型护岸既可防止水土流失，又可满足生态环境要求，是管道施工大开挖穿越河流后堤岸恢复的好方法。

Crossing a forest, he saw a lion motioning him to stop.

穿过一片森林的时候，他看到一只狮子向他示意，让他停下来。

And at that distance we are just crossing over the border into Devon—that upstart county which has tried to wrest provenance of pasties away from Cornwall.

走出那么远，我们已经进入德文郡的边境了，这个馅饼新贵正在试图证明自己才是馅饼的发源地，而不是康威尔郡。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了