中文摘要：

研究了干物质重在微胚乳超高油玉米和高油115玉米的胚、非胚部位以及整粒玉米中的变化规律。结果表明：微胚乳超高油玉米和高油115玉米胚干重在整个籽粒形成过程中基本上呈线性增长，前者稍低于后者。微胚乳玉米和高油115非胚干重峰值分别出现在授粉后28天和42天，前者峰值只达到后者的29．94％～43．32％。微胚乳玉米和高油115整粒干重峰值出现在授粉后35天和49天，前者单粒产量是后者的26％～42％。微胚乳玉米单粒产量不高的原因主要是由于非胚部位灌浆期较高油115玉米缩短2～3周。微胚乳玉米胚重比增速高于高油115，收获时前者的胚重比为后者的2．13～2．73倍，达到41．16％～52．60％。

英文摘要：

The Change rule of the dry weight of corn embryo, OSK （the other section of a.kemel except embryo） and the whole kernel in the developing grains of micro-endosperm super-high oil corn and Gaoyou 115 corn were studied in this article. The results showed that the embryo dry weight of both of micro-endosperm corn and Gaoyou 115 corn were basically kept linear growth, and the former was slightly smaller than the latter The peak OSK dry weight of micro-endosperm corn and Gaoyou 115 corn were respectively in 28 DAP （days after pollination） and 42 DAP,and the former was about 29.94% -43.32% of the latter. The whole kernel peak dry weight of micro-endosperm corn and Gaoyou 115 corn were respectively in 35 DAP and 49 DAP. The former single kernel output is the 26% -42% of the latter. Why micro-endosperm corn had low grain yield is mainly due to OSK filling Stage shortened 2 to 3 weeks than Gaoyou 115 corn. The micro-endosperm corn had a quicker growth than Gaoyou115 corn in embryo weight ratio, so the former embryo weight ratio was the latter＇ s 2.13 -2.73 times at harvest time. It can reach to 41.16% -52.60%.