在１９９３年我们发现了多２７自交系杂交当代子粒比自交子粒体积明显增大后，１９９４年采用４个自交系（多２７、齐３１８、齐３１９、８７１３７）对此现象进行了进一步的研究．研究发现，多２７×齐３１８、多２７×齐３１９、多２７×８７１３７杂交当代子粒的平均百粒体积分别比多２７自交子粒大４．２３ｍｌ、４．９２ｍｌ和３．９７ｍｌ，成对ｔ检验表明这些差异均达到极显著水平，而它们的Ｆ２子粒未发现分离现象。以三系为母本，以多２７为父本的杂交当代子粒平均百粒体积与母本自交子粒无显著差别．根据上述情况，本文对此进行了深入的探讨。 In 1993, we found that more than 27 inbred lines hybridized contemporary maize grains increased significantly in size compared to the self-primed maize grains. This phenomenon was further enhanced by the use of four inbred lines (Duo 27, Qi 318, Qi 319, 87137) in 1994 Research. The results showed that the average hundred kernels of hybrid 27 × Qi 318, 27 × Qi 319, and 27 × 87137 hybrids were 4.23ml, 4.92ml and 3.97ml larger than that of the multi-27 self-fertilized seeds respectively, paired t Tests showed that these differences were extremely significant level, and they did not find F2 segregation phenomenon. There was no significant difference in the average 100-grain size of the hybrid contemporary grains with the three lines as the female parent and the multiple-27 as the paternal parent. According to the above situation, this article has carried on the thorough discussion to this.