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自1967年发现谷子不育材料后,各地相继开展了“三系”的选育工作。过去由于受席尔斯“三系”理论的束缚,工作进展缓慢,至今没有配套。因谷子具有播种量小,繁殖系数高,又可移栽的特点,科技人员利用不育材料和恢复系制种,将杂种优势用于生产,即“两系法”生产。以往在选育高产优良杂交组合时,一般采用广泛测交的办法,筛选恢复系,这样做带有一定的盲目性。要探明谷子杂种一代粒重与恢复系主要性状间的关系,对选育高产优良杂交组合有一定的指导意义。
Since the discovery of millet sterile materials in 1967, all over the country have carried out “three lines” of breeding. In the past, due to the restraint of Schlesse’s “three lines” theory, the work progress was slow and so far there is no matching. Because millet has the characteristics of small seeding rate, high multiplication coefficient and transplanting, scientists and technicians use the sterile material and restorer seed to make the heterosis for the production, that is, the “two lines method” production. In the past, when breeding high-yielding elite hybrid combinations, we generally used a wide range of methods to screen and restore restore lines. This has some blindness in doing so. To find out the relationship between grain weight of millet hybrids and the main traits of restorer lines is of guiding significance for the breeding of high yielding elite cross combinations.