杂交育种是一个很复杂的组合过程。
但是，传统的杂交育种是一个缓慢的进程。
因此要提高它们的含量宜采用杂交育种途径。
Therefore it is suitable to use the process of crossbreeding to increase their contents.
豇豆杂交育种按照传统的方法存在坐果率低的问题。
Cowpea crossbreeding has the problem that fructify cation is low according to the traditional method.
还评价了瑞丽内陆型甘蔗杂交育种基地的特殊意义。
In addition, the special significance of breeding base for inland sugarcane is also evaluated.
因此番茄雄性不育的研究对于番茄杂交育种非常重要。
So the investigation to tomato male sterility plays an important role in tomato hybrid breeding.
目的：为铁皮石斛杂交育种与野生资源保护提供基础。
Objective : To provide the theoretical basis and applied technology for breeding superior species of Dendrobium officinale.
本文是普通小麦与长穗偃麦草杂交育种二十年的经验总结。
This paper is a experimental summation on the cross breeding between Triticum aestivum and Agropyron elongatum in the past twenty years.
也在于这个时期的技术被引进与外地的月季杂交育种和杂交。
Also about this time techniques were being introduced in the field of rose cross-breeding and hybridization.
传统的家系选择和杂交育种是培育优良品种最有效的方法之一。
The traditional line selection and cross breeding is one of the most effective ways to cultivate improved varieties.
桃的常规杂交育种存在很多弊端，给育种工作带来较大的困难。
Conventional intercrossing of peach have many shortcomings, which bring biggish difficulty to breeding work.
基因工程从来没有根据传统杂交育种中应用的植物正常繁殖过程。
It is never based on the plant's normal reproductive processes, which are used in traditional cross-breeding.
显然这位伟大的育种家已经使他的杂交育种达到了至善至美的科学水平。
Apparently this great pigeoner had perfected his out crossing approach to the level of a science.
抗旱指数是抗旱性和丰产性的有机结合，杂交育种是提高丰产性的关键。
The index of drought resistance lies in yield increase and drought resistance.
水稻育种从常规育种到杂交育种方式的转变，大大提高了水稻的产量和质量。
Since rice breeding changed from the conventional to the hybrid, rice production and quality have been greatly increased.
这些杂交育种及基因工程的努力，对于食品科学家和农业学家来说几乎代表了一个新概念。
Such cross-breeding and genetic engineering efforts hardly represent a new concept for food scientists and agriculturalists.
该研究证明海水鱼种间杂交可以成功，并为海水鱼杂交育种推广应用奠定了基础。
The study proves that interspecific hybridization can be success and makes a foundation for the popularization and application to the cross breeding of Marine fishes.
在中期，通过分子生物学技术辅助的常规杂交育种(分子标记辅助育种)就足以满足要求了。
In the medium term, conventional crossbreeding helped by molecular biology techniques (a technique called "marker assisted breeding") may suffice.
除了少数无偿成就，我很乐意承认，有系统的杂交育种，从未产生了良好的效果。
Except for a few gratuitous successes, which I am prepared to admit, systematic cross-breeding has never produced good results.
作者认为抓住根蘖性状通过组建综合种、轮回选择和杂交育种法可培育出新品种。
Depending on the character of creeping the authors believe in new variety will be develope…
经过40多年的努力，澳大利亚昆士兰州在松树杂交育种方面取得了举世瞩目的成绩。
With over 40 years of work, Queensland has made great achievement in hybrid breeding of exotic pines.
综述了果树主要经济性状的遗传特点，以期为果树杂交育种中亲本的选配提供理论依据。
Genetic characteristics of several major economic characters in fruit trees which can provide theory basis for selection of parents in plant crossbreeding are discussed.
对于每穗粒数、千粒重等遗传力高的性状，可结合杂交育种工作采用有限回交同步改良。
High heritability traits such as grain number per panicle and weight per thousand grains can be improved synchronously by limited backcrossing in breeding procedures.
杂交育种技术是培育优良树木品种的有效方法，在主要经济树木育种中已得到广泛的应用。
Crossbreeding as a effective way to cultivate excellent trees variety has been extensively applied on major economic trees breeding.
杂交育种技术是培育优良作物品种的有效方法，在主要经济作物育种中已得到广泛的应用。
Crossbreeding as a effective way to cultivate excellent crop variety has been extensively applied on major economic crops breeding.
这不是基因工程的产物，而是来自耐心的，老式的杂交育种，是那些友好的农民们做了几个世纪的事情。
It was the product not of genetic engineering but of patient, old-fashioned cross-breeding, of the kind farmers have been doing for centuries.
文中并分析了增、减效等位基因在亲本中的分布，讨论了遗传模型分析在杂交育种中的应用。
Distributions of alleles with increasing and decreasing effect in parents were ranked and application of the model analysis in cross-breeding was discussed.
已有多种方法被用于提高地方良种的性能，包括杂交育种，以及通过与良种的回交和品系内选育进行的品种改良。
Various approaches have been used to improve the performance of adapted indigenous stock, including cross-breeding and upgrading through back-crossing with improved breeds, and within-line selection.
已有多种方法被用于提高地方良种的性能，包括杂交育种，以及通过与良种的回交和品系内选育进行的品种改良。
Various approaches have been used to improve the performance of adapted indigenous stock, including cross-breeding and upgrading through back-crossing with improved breeds, and within-line selection.
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