关键词: 白羊草, 白羊草, 转录组, 表达分析

Abstract: The heterosis and correlation of lipid content of 20 sorghum hybrids were studied to provide a theoretical basis for high quality sorghum breeding. The quality traits of 20 sorghum hybrids and their parents were analyzed by using near infrared grain analyzer, and the heterosis and correlation of sorghum quality traits were analyzed by DPS. The trend of heterosis among quality traits was tannins>total starch>lipid>protein. The heterosis of protein and lipid were mainly negative, while total starch and tannins were mainly positive. The correlation between lipid and tannin was significantly positive, but the correlations between starch and other quality traits were significantly negative. Protein content had no significantly positive correlation with values of low parent, mid-parent and high parent. Lipid content had no significantly negative correlated with low parent value; while it had significantly positive correlation with mid-parent value and high parent value. Total starch content had a significantly positive correlation with low parent value and mid-parent value except for high parent value. Tannins content had a significantly positive correlation with low parent value, mid-parent value and high parent value, respectively. The tannin content and starch content had higher heterosis in sorghum grain, and protein and lipid had lower heterosis. The tannin and lipid were positively correlated. Total starch and other quality characters were negatively correlated. In the genetic, the lipid content was susceptible to high value parent and total starch content was susceptible to low value parent, while the tannin content was very close with parents.