【摘要】 重点分析了小麦品种晋麦49号的丰产性、稳产性、基因效应及遗传背景，明确了晋麦49号在一般肥力情况下能获得高产，在高肥力情况下更能充分发挥其增产潜力，实现超高产的机理。对超高产育种中的几种产量结构模式和育种方法进行了探讨，认为株高在不同环境下的刚性度和稳定性，以及具有高光效的株型结构是超高产育种的关键。更多还原

【Abstract】 The bumyer yield, stable yield, genie effects and genetic background of a wheat variety Jingmai 49 were mainly analysed in this paper. The results revealed that Jinmai 49 can get high yield undercommon fertility while the potentiality of increasing production was fully expressed under high fertility,and it realized the mechanism of super-high yield. Several models of yield composition and breedingmethod were approached in super high yielding breeding. The rigidity and stability of plant height and thestructure of plant type with high photosynthesis were suggested to be the key to super high yielding breeding.更多还原