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多叶玉米是一种新型的基因突变型,其表现型为穗位节上部功能叶片增加以至加倍,并具有遗传稳定性。多叶型玉米选育是将控制多叶性状的基因导入普通玉米骨干系中,创造出多叶型或超多叶型玉米新品系及杂交种。多叶玉米穗上叶片居7～12片,单株穗位上部叶面积自交系和杂交种分别在400和600cm~2左右。多叶型玉米实现了在不增加密度的前提下,叶面积系数比普通玉米增加至加倍,并延长光合时间,加快灌浆速率,从而提高产量20～30％。多叶玉米具备了有效地拦截和利用太阳光能的生理、形态特征,是高光效育种的宝贵材料,具有重要的研究意义和利用价值。
Multi-leaf maize is a new type of mutant gene. Its phenotype is that the functional leaves in the upper panicle are doubled and doubled, and have genetic stability. Multi-leaf corn breeding is the control of leafy genes into common maize skeleton, to create a new multi-leaf or multi-leaf corn lines and hybrids. The number of leaves on leaves of multi-leaf maize ranged from 7 to 12, and the leaf area of the upper leaves of single plant was about 400 and 600 cm ~ 2, respectively. Multi-leaf corn achieved without increasing the density under the premise of the leaf area coefficient than normal corn increased to double, and extend the photosynthetic time and speed up the filling rate, thereby increasing the yield of 20 to 30%. Multi-leaf corn has the physiological and morphological characteristics of effectively intercepting and utilizing solar energy and is a precious material for high light efficiency breeding, which has important research significance and utilization value.