breeding n. 1.孵化;饲养;繁育。 2.选种;育种。 3.繁殖,生育。 4.薰陶;养育,教养,礼貌。 5.【原子能】增殖,再生。 a man of fine breeding 有教养的人。 cross [out-and-out] breeding 杂交繁育。 close [in-and-in] breeding 近亲繁育。 mass breeding 混合育种。 cattle breeding 养牛业。
A major component of wheat breeding programmes is to incorporate disease resistance , particularly to the various leaf and stem diseases , the races of which frequently change and genetic resistance continually breaks down 小麦育种项目的一个重要部分是抗病育种,特别是针对各种叶和茎病,致病菌系经常改变,致使小麦的遗传抗性不断地失效。
Very little formal research has been carried out into the particular requirements of most of the other field crops , such as sunflowers and canola , except for quite vigorous plant - breeding programmes in the case of sunflower 除了相当活跃的植物育种项目中有向日葵育种课题外,对向日葵和油菜等大部分其它大田作物的特定需求方面很少有正式的研究。