Abstract: The difference and correlation of grain traits,including 1000-kernel weight,grain length,grain width,grain thickness and ratio of grain length to width in twenty pairs of the near-isogenic lines of barley were analyzed in order to study the effect of the semi-dwarfing gene uzu on grain traits.The results indicated that the differences of 1000-kernel weight were significant or highly significant between tall isogenic line(without uzu)and dwarf isogenic line(with uzu),which showed the semi-dwarfing gene uzu led to the reduction of 1000-kernel weight,also reduced the grain length and the ratio of grain length to width,but there was no effects on the grain width and the grain thickness.In tall isogenic lines of barley,the correlation analysis showed that the difference of 1000-kernel weight was the most significant;The 1000-kernel weight showed highly significant positive correlation with grain width and grain thickness,and significant positive correlation with grain length,and the most correlation with grain width;But the 1000-kernel weight showed highly significant negative correlation with ratio of grain length to width.In dwarf isogenic lines of barley,similarly,the difference of 1000-kernel weight was the most significant;The 1000-kernel weight showed highly significant positive correlation with grain length,grain width and grain thickness,and the correlation between 1000-kernel weight and grain length was the largest;However,there was no significant correlation between 1000-kernel weight and ratio of grain length to width.

Key words: Barley, Near-isogenic line of plant height, Grain trait, 1000-kernel weight, Correlation

CLC Number: 

• S512.03