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在F_3和F_4代比较了世代进展的四种方法(SPS、SSD、BP和MMS)。对于F_3代单株籽粒产量和至少一个产量构成因素来说,SPS和SSD世代进展法优于BP和MMS法。F_3SSD群体与F_3SPS群体的任何性状都没有显著差异,然而,F_3SSD群体的不同性状比其它世代进展法所产生的群体性状具有更大的变幅和变异系数。来自F_3SSD群体的F_4后裔籽粒产量显著优于来自其它三个F_3代群体的品系。MMS世代进展法证明,如果进行早代选择它对提高千粒重是有效的。
Four approaches to generation progression were compared at F_3 and F_4 (SPS, SSD, BP, and MMS). For the F_3 single-plant grain yield and at least one yield component, the SPS and SSD generations progressed better than the BP and MMS methods. However, there was no significant difference in any traits between the F_3SSD population and the F_3SPS population. However, different traits of the F_3SSD population had larger amplitude and coefficient of variation than the population traits generated by other generations of progress. F_4 descendants grain yield from the F_3SSD population was significantly better than those from the other three F3 generation populations. The MMS generation progress method proves that it is effective in increasing 1000-grain weight if the early generation is selected.