在水稻的进化过程中,出现了一种叶片不同程度和不同叶片数卷曲的性状。据观察,有叶片正卷的(向叶近轴面卷曲),有叶片反卷的;有全株上下叶片均卷的,有只部分叶位叶(正卷的只剑叶或上部几片叶卷曲,反卷的则只下部几片叶卷曲)卷曲的;有叶片仅略微卷曲的,也有卷呈筒状的。水稻的卷叶性状已为许多育种工作者所关注,希望利用这一性状,培育出单位土地面积光能利用率更高的水稻品种来。南朝鲜通过籼粳稻杂交 During the evolution of rice, there appeared a variety of leaves with different degrees and curly leaf number of traits. It is observed that there is a blade of the volume (to the leaf near the surface curl), a blade of anti-roll; the whole plant are up and down the leaves are rolled, there are only part of the leaf position leaves Curly, anti-roll only a few leaf curl lower part) curly; leaf only a little curly, but also roll was tubular. Rice leaf curling traits have been of concern to many breeders, hoping to use this trait to cultivate a unit area of ​​rice yield higher light energy to come. South Korea crosses indica and japonica