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籼粳亚种间杂交后代穗颈大维管束数与穗颈小维管束数、１次枝梗数、１次枝梗粒数、２次枝梗数、２次枝梗粒数和穗粒数均呈显著或极显著的正相关；穗颈小维管束数与１次枝梗数、２次枝梗数、２次枝梗粒数和穗粒数亦呈显著或极显著的正相关；穗粒数主要由２次枝梗粒数决定，而２次枝梗粒数主要由２次枝梗数决定，穗颈大、小维管束数和１次枝梗数通过２次枝梗数影响穗粒数；穗颈维管束性状主要受遗传因素控制，环境条件的影响较小
The number of big vascular bundles and the number of small vascular bundles, the number of primary branches, the number of primary branches, the number of secondary branches, the number of secondary branches and the number of secondary branches and grains per panicle of indica-japonica cross were lower Significant or very significant positive correlation. The number of vascular bundles in panicle neck had a significant or extremely significant positive correlation with the number of first branch, the second branch, the second branch and the number of spikelets. The number of spikelets was mainly determined by 2 times the number of branches of the decision, and 2 times the number of branches mainly determined by the number of 2 branches, panicles neck, the number of small vascular bundles and the number of primary branches through 2 times the number of branches to affect the number of grains per spike; Traits are mainly controlled by genetic factors, environmental conditions less affected