Abstract: A pot experiment was conducted to study the CH₄ emission features of fourteen leading super-rice varieties (six Japonica rice varieties and eight Indica hybrid rice varieties) and their relationships with the varieties growth characteristics in Yangtze Delta. Two distinct peaks of CH₄ emission were detected during the entire growth period of the varieties, one peak occurred at fulltillering stage, and the other appeared at booting stage. The average total CH₄ emission of Japonica rice varieties was 37.6% higher than that of the Indica hybrid rice varieties (P<0.01), and the differences in the CH₄ emission between rice types occurred at the postanthesis phase. For all the varieties, there was a significant positive correlation between the total CH₄ emission and the maximum leaf area, but the correlations between the CH₄ emission and the other growth characteristics varied with variety type. The total CH₄ emission of Japonica rice varieties had a significant positive correlation with plant height, while the correlations between the total CH₄ emission of Indica hybrid rice varieties and their plant height were not significant. The total CH₄ emission of Indica hybrid rice varieties had significant negative correlations with the total aboveground biomass, grain yield, and harvest index, but the correlations were not significant for Japonica rice varieties. The lower CH₄ emission of Indica hybrid rice varieties was likely due to their significantly higher root biomass, as compared with Japonica rice varieties.