查询词典 cross breeding

Its utilization potential is more powerful in the breeding of recurrent-selection, cross, backcross and multiple-cross.

探讨了单显性核不育的利用方法和途径，单基因显性核不育在轮回选择、杂交、回交和复交育种中有一定的利用价值。

Introduced: mainly Simmental, Charolais cattle, Limousin beef cattle breeding, such as male parent to do to Luxi cattle to cross the female parent to do to improve.

改良肉牛介绍：主要有西门塔尔牛、夏洛来牛、利木赞牛等良种肉牛做父本，以鲁西黄牛做母本进行杂交改良。

Rubber tree is the perennial cross-pollination tree, and the efficiency of selection and breeding is restricted by its long breeding cycle.

由于橡胶树是多年生异花授粉乔木，育种周期长，选育种效率受到很大的限制。

In the study,univariate combining ability anlysis diall-cross design of Griff ing s breeding method 2 by using SAS programs is solved , an example of rice is also provided to illustrate the detailed SAS calculation. This method is universally suitable for combining ability analysis .

本研究以谷粒实例示明具体SAS计算过程，解决了Griffing双列杂交育种法Ⅱ配合力单变元统计分析的SAS实施，为作物遗传育种实践提供了一种实用可靠、操作简便的SAS程序，此法具有国际普遍适用的价值。

The fact that the pink plants were predominant among the population of RP1 cross progeny hints that the pink had the strong descendiblity, Whereas another fact that the plants with the color of another parent were predominant among the population of R01 cross progeny indicates that the nacarat/saffron plant had the low descendiblity. The above results suggest that it is better to choose the pink plants with the target color flower of breeding as a parents when arranging the cross combination. Many novel flowers with singular value of view and admire can be bred by the different cross combination since the wide segregation chromatogram is not confined to the parents'.

以RPl及R01作母本或父本，分别与不同花色杂交，F1代发生了明显的花色分离，RP1的杂交后代均以粉色占优势，表明粉色的遗传力较强，R01的杂交后代均以其它亲本占优势，表明桔黄/桔红的遗传力较弱，因此在选配组合时，最好选择具有育种目标的粉色个体作为亲本；另外由于分离谱较广，且分离的色谱范围并不完全限于双亲之间，可根据不同的杂交配组，培育出具极高观赏价值的稀有花色。

Breeding technology of industrial useful microorganisms was developed from conventional mutation and screening technology to mutagenesis breeding ,cross reeding,metabolic control breeding,gene engineering breeding and so on.

工业有益微生物的育种技术已从常规的突变和筛选技术发展到诱变育种、杂交育种、代谢控制育种和基因工程等。

Guided by instinct, by the otherworldly radiance of the Southern Cross, they head unerringly for their traditional breeding ground where--after a ritual courtship of intricate dances and delicate maneuvering, accompanied by a cacophony of ecstatic song--they will pair off into monogamous couples and mate.

遵循本能，由otherworldly的光芒，南横，他们头部unerringly他们传统的温床，而-后一种仪式求爱的错综复杂的舞蹈和微妙的操纵，并伴随有杂音的狂喜之歌-他们会两人一组起飞到是一夫一妻制夫妻和伴侣。

The GCA and SCA between various parents and cross combinations were significantly different. The GCA effect value of 582 was the highest in these three traits. The sum of breeding value and SCA of cross combination 582×Kangda was significantly superior to other combinations in amount of cocoon crop and cocooning rate to newly hatched larvae. The best cross combination of breeding value and SCA was 582×9906 in thousand-cocoon weight.

供试亲本间及各组合间的GCA和SCA差异较大，其中亲本材料582的产茧量、千粒茧质量及收蚁结茧率3个性状均表现出最高的GCA效应值；杂交组合582×抗大的产茧量和收蚁结茧率的育种值与SCA之和明显地优于其他组合，千粒茧质量的育种值与SCA之和最优的组合为582×9906。

A red strain with an inferior dorsal bred to a red strain with a superior dorsal has a much better chance after the spin of the gene roulette wheel than a cross to another color strain.

但是同种的鱼线必须要多，如此才可补齐原有品系鱼种的原有基因（因为由於LINE BREEDING OR INBREEDING 后通常都会遗失掉一些对偶基因因而导致所谓基因弱化的发生）。

In maize (Zea mays L.) single-cross breeding programs,identifying high yielding hybrids and inbred lines with superior performance is an important problem.

在玉米单交种育种中，鉴定高产杂交种和具有优良特性的自交系是一个重要的问题。

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％。