利用不同基因型多隐纯合体甜玉米材料进行杂交,获得杂交种,再同时种植这些杂交组合及其对应亲本,通过观测一系列农艺性状,灌浆期测定主要品质指标,并进行相关性分析.主要结果如下:①授粉后18 d果皮厚度与青穗产量呈极显著的正相关,其余4个品质性状与青穗产量相关不显著,各主要品质性状间相关不显著.②干子粒收获期蛋白质含量与含油量相关不显著,胚重比值、胚油分含量与子粒含油量呈显著的正相关,其余11个性状与含油量相关不显著.穗粗与蛋白质含量呈显著正相关,其它性状与蛋白质相关不显著.③含糖量受加性和非加性效应控制,其它品质性状主要受加性效应控制.④除含水量外,其余各品质性状均存在丰富的遗传变异。

Different genotypes of multiple recessive homozygotes nf sweet corn were crossed with each other． and the hybrids were got. They were planted together with their parents at the sallle time. A series of agronomiccharacters were studied，and the main quality characters of kernels were studied in the filling period The correlationbetween quality characters，parts of agronomical characters and yield characters were studied. The main results wereas follows：①Pericarp thickness was significantly and positively correlated with the yield offresh ear on the 18th dayafter pollination. And the others 4 quality characters were not significantly correlated with the yield of fresh ear. Cor-relations between main quality characters were not significant.②There was not significant correlation between pro-rein content and oil content during the harvest. Both of embryo weight ratio and oil content of embryo were signifi-eantly and positively correlated with kemel oil content. And the correlations between the others 11 characters and oilcontent were not significant. Ear diameter was significantly and positively correlated with protein content.③Thesugar contents of multiple homozygous materials were controlled by both of additive and non-additive effect. Theother quality characters were mainly controlled by additive effect④Besides the lnoisture content，the genetic varia-tion of the other quality-characters were large.

广西科技厅(桂科攻0228002-5),广西大学重点课题(2003ZD02)