微胚乳超高油玉米籽粒β-谷甾醇含量的研究初报

bstract To analyze the contents of β-sitosterol of corn seeds, several type of corn were planted in the Fall of 2005. The results showed that the contents of β-sitosterol in the super high oil seed of micro-endosperm corn (MEC) were much higher than that in other type of corns. The heterosis or hybrid vigor of type III of MEC was dominant. To analyze the heredity of β-sitosterol in the super high oil seeds of MEC, the hybrid seeds of type III of MEC and their parents were planted in the spring of 2006. The results showed that the contents of β-sitosterol in normal hybrid F1 seeds were not significant different with that in reverse hybrid F1 seeds. The contents of β-sitosterol were dispersed from 42mg to 140mg per 100g seeds between different combinations in the same type of corn and dispersed from 14mg to 19mg per 100g seeds in the same plant lines. But the heterosis of β-sitosterol contents was different between different combinations of hybrid F1 seeds. Analysis of parent-offspring correlation was performed in the 6 combination hybrid F1 seeds of MEC which planted in two seasons. The results showed that there was a positive correlation between hybrid F1 and mean of parents (r=0.643884), father plants (r=0.319369), and mother plants (r=0.682621), respectively. But no correlation rate reaches at significant different level（0.05）.