The addi-tive effect of major gene is ?1.74, which indicates that the locus of the allele in parent 1141B may decrease the oil content, but that in parent Ken C1-1 may increase it.

• 组合2(32B ×垦C1-2)主基因加性效应值为?3.；74；表明亲本32B中主基因位点上的等位基因降低含油量；而亲本垦C1-2中的等位基因增加含油量。