system of breeding

The system established in this study could be applied in genetic manipulation and cellular engineering for the breeding of wintergrazer-70.

该体系可用于黑麦冬牧70遗传转化和细胞工程育种研究。

The Stability of the Intraspecific Competition System for the Natural Enemies Which Possess Functional Breeding Rate or Capturing Rate

具有函数放养率或捕获率天敌有种内竞争系统的稳定性

The using of co-transformation system, site-specific recombination system ( FLP/ FRT? Cre/ lox? R/ RS and Gin/ gix systems) and transposable element system ( Ac/ Ds transposable element system) in breeding marker-free transgenic plants were reviewed in this paper.

本文综述了共转化系统、位点特异性重组系统（包括FLP/FRT、Cre/lox、R/RS及Gin/gix系统）和转座子系统（Ac/Ds转座子系统）在培育无选择标记转基因植物中的应用。

Technical improvements in somatic cell hybridization, such as genetic transformation, provide a promising approach for breeding new tolerant cultivars of this species, good protoplast culture system is fundamental and restriction point.

植物体细胞杂交技术的产生和发展为草地早熟禾新品种选育提供了一条新途径，良好的原生质体培养体系是利用体细胞杂交技术进行品种改良的根本和制约点。

Analysis of gene differential coefficient ( GST) indicating that genetic variation of Medicago sativa is mainly exits within varieties. This characteristic is related to the breeding system ( out-breeing) of Medicago sativa.

基因分化系数（GST）分析结果表明，苜蓿的遗传变异主要存在于品种内，这一特点与多年生苜蓿的繁育体系（异交）有关。

The established technique system and obtained haploid plant would provide solid support and valuable materials for further breeding of Dioscorea zingiberensis.

实验结果为进一步开展单倍体育种及相关理论研究提供了材料和技术基础。

Establishment and Application of Breeding Technology System on Millet Target Character Gene Bank

谷子目标性状基因库育种技术体系的构建及其应用

Establishment of high efficiency microspore culture and breeding system of Brassica napus with Yunnan natural condition

利用云南自然条件建立油菜高效小孢子培养技术及育种体系

The contents of rice genetic engineering breeding were summarized. Its technologic system were introduced in detail, especially the improved technology about experimental methods in recent years.

总结了水稻基因工程育种的主要内容，介绍了其技术体系（特别是近年有关实验方法的改进）。

Strict and blocked production management system is modernization swine breeding companies gain benefits'basis, the display of well management and actual capacity is the key of win the market. They couple get a spacious prospect to TV monitor in the usage of the modernization swine breeding companies.

严格封闭的生产管理体系是现代化养猪企业获得效益的基础，良好的企业管理及实力展示又是赢得市场的关键，二者结合使用电视监控在现代化养猪企业中的应用具有广阔的前景。