基因组研究的飞速发展，使人们从分子水平上了解阈性状和数量性状的遗传机理成为可能。
The great development in genomics makes it possible to unveil the genetic basis of threshold and quantitative traits at molecular level.
应用分子遗传图谱不仅能鉴定质量性状，而且能发掘数量性状基因。
Molecular genetic mapes can not only be used to identify qualitative traits, but also be utilized to discover quantitative trait genes.
在这里，我们报道了GS3的遗传和分子鉴定，一个主效的控制籽粒大小的数量性状基因座。
Here we report the genetic and molecular characterization of GS3, a major quantitative trait locus for grain size.
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