Abstract: Based on the summary data of the regional trials and production trials of wheat varieties in Yunnan province,a variety of analytical methods were used to analyze the high yield potential,yield stability and yield components of a new stripe rust resistant wheat variety Yunmai 73. The results showed that there was a significant positive correlation between the thousand-grain weight and the yield,and the effective panicle was significantly correlated with the yield. The grain number per panicle was not significantly correlated with the yield. The results of path analysis showed that the direct effect of thousand-grain weight on yield was the highest, followed by the effective panicle. The effect of grain number per panicle was not obvious to the yield. The increase of thousand-grain weight and the effective panicle was the key to its high yield. Yunmai 73 is a stripe rust resistant cultivar with high yield potential and good comprehensive traits. With appropriate cultivation method,this variety will have a good application prospect in suitable planting area.

Key words: Yunmai 73, resistance to stripe rust, high yield, stable yield, yield component