For microbial strain with simple genetic background, outer space conditions can make microorganism change into a new type, which is valuable for space breeding research.
微生物是低等生物，遗传背景比较简单，一旦突变就会形成新的东西，这对航天育种研究有非常大的价值。
China's seed-breeding satellite, Shijian-8, successfully landed in Sichuan Province at 10:43 am Beijing time yesterday after a 15-day flight in space.
在经过15天的太空飞行后，我国"实践八号"育种卫星于北京时间9月24日10时43分在四川省境内成功着陆。
Space mutation breeding technique, a new breeding technique, incorporates spaceflight technique with modern biotechnological and traditional breeding technique.
空间诱变育种(或航天育种)是航天技术与现代生物技术、常规育种技术相结合的新育种技术。
The theory and techniques of molecular genetics developed remarkably in recent years, which expands the new space for animal resistance breeding.
近年分子遗传的理论和技术进展迅速，为动物抗性育种的研究开拓了新的空间。
The results indicated that space mutagenesis might provided a new way for edible fungus breeding.
以上结果表明，空间诱变可能为食用菌的遗传育种提供新途径。
In accordance with character of space mutation, improvement method of breeding and enhancing efficiency of breeding have been studied.
同时针对航天诱变的特点，进行了改进育种方法和提高诱变效果的研究。
On the basis of the research of microgravity environment, space radiation on bio sample mutagenesis, the theoretical basis of hi tech breeding with space mutation technique is discussed.
在综述微重力环境、空间辐射等对生物样本的诱变研究成果的基础上，论述了应用空间诱变技术进行高科技生物育种的理论基础。
Suitable feed, appropriate environment, adequate space, high fiber diet and a varied diet are the most important factors in the raising and breeding of hog deer.
适宜的饲养环境、宽敞的兽舍、高纤维含量和多样化的食物是豚鹿正常生长发育、繁殖的重要因素。
In this paper the theoretic foundations and progresses on space-flight breeding were summarized, the problems and application perspective of space-flight breeding were also discussed in rice breeding.
本文综述了水稻航天育种的特点、理论依据及研究进展，讨论了水稻航天育种存在的问题和应用前景。
By the experiment of genetics stability, it showed that genetic variation of the strain had already taken place. It was the highest strain of the tylosin of selective breeding after space mutagenesis.
结合菌株传代稳定性试验，说明该菌株已发生了遗传性变异，是经太空诱变后所选育的泰乐菌素高产菌株。
Abstract: The influence of breeding density and space allowance on immune and stress indexes of broilers were investigated in this experiment.
摘要本试验旨在探究饲养密度与活动空间对肉鸡免疫和应激指标的影响。
According to introduction, rice was selected because variations are easily happened on it, so outer space is an ideal breeding condition.
据介绍，之所以选择这两类物种是因为：水稻比较容易产生变异，太空育种的情况比较理想；
A mother mastiff, breeding through their hands, given by the young mastiff is generally not less than 7, the basic all 10 or so, even up to a maximum of 15, with almost no space phenomenon.
经过他们之手配种的母獒，所下幼獒一般不会少于七条，基本都在十条左右，最多甚至达到十五条，几乎没有出现配空的现象。
A mother mastiff, breeding through their hands, given by the young mastiff is generally not less than 7, the basic all 10 or so, even up to a maximum of 15, with almost no space phenomenon.
经过他们之手配种的母獒，所下幼獒一般不会少于七条，基本都在十条左右，最多甚至达到十五条，几乎没有出现配空的现象。
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