我们于1987年对雌株玉米的产量构成因素进行了通径分析。试验结果表明,穗粒数是雌株玉米的增产关健,其中雌株顶穗的穗粒数与顶穗的穗粒重r_(X~(2M))=0.9879,P_(M·X~2)=0.9439;雌株腰穗粒数与雌株腰穗的穗粒重r_(X5N)=0.9999,P_(N·X5)=1.1528。而千粒重却是雌株后代正常玉米产量构成至关重要的因素,其r_(X9B)0.9095,P_(B·X9)=0.6648。 We conducted a path analysis of the yield components of female maize in 1987. The results showed that the number of grains per spike was the key factor for the yield increase of female maize. The number of spikelets per head and the number of spikelets per head were r_ (X ~ (2M)) = 0.9879, P_ (M · X ~ 2 ) = 0.9439; The spikelet number per spike and the spikelet weight per spike were r_ (X5N) = 0.9999, P_ (N · X5) = 1.1528. However, the 1000-grain weight was the most important factor for the normal corn yield of the offspring of female plants. The r_ (X9B) 0.9095, P_ (B · X9) = 0.6648.