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1·At that time, a few foresighted men began line breeding and inbreeding with the hopes of establishing a new draft breed.

当时，一些富有远见的男人开始行繁殖和近亲繁殖，与建立一个新的草案品种的希望。

2·These loci might be used as assistant markers for early selection in line breeding of ultra-fine wool sheep from Alpine type Chinese Merino.

部分位点可为中国美利奴高山型超细品系培育的早期选种提供辅助依据。

3·It is differ both from the method of circulate line selection for seed reproduction and from the method of pure line breeding for varieties development.

该方法既区别于单纯生产原种的“株系循环法”，也区别于选育新品种的纯系育种法。

4·This photosensitive male sterility (PGMS) line produced by the expression of antisense-OsPDCD5 could be applied in production of hybrid rice using two-line breeding system.

这个通过基因工程的方法获得的光敏雄性不育系可应用到“两系法”育种中，用以生产杂交水稻。

5·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。

6·The team is now doing field tests. The first breeding line is expected to be released next year for use by private seed companies and public soybean breeders.

干旱小组目前正在做田间试验。第一繁育系预期在明年发布，仅为私人种子公司和公共大豆育种者使用。

7·Using this technology, the purity problem during seed production in three-line, two-line or chemical-emasculated hybrid rice breeding system could be solved and some new combinations could be bred.

利用这项技术可望解决三系、两系或化学杀雄杂交稻制种过程中出现的纯度问题，且有利于新杂交稻组合的选育。

8·The remarkable successes on research and breeding of two line hybrid rice in China are introduced.

介绍了全国近年来两系杂交水稻研究和育种的重要进展。

9·The paper introduces the Hsien rice restoring line Chen R92-225 breeding by allomixis and irradiation methods, the characteristic and application of Hsien rice restoring line Chen R92-225.

本文介绍了籼型恢复系郴R92-225的杂交和辐射选育过程、特征特性及配制杂交组合应用于生产的情况。

10·The high-yield and high-quality in erect panicle type Japonica line could be selected by anther culture or group selective breeding.

通过花培和组群筛选法均能较快地获得直穗型高产优质粳稻品系。