Abstract: In order to explore the relationship between yield and the three yield components of barley in Jiangsu coastal areas， 12-15 different barley varieties （lines） were used to analyze the correlation between yield and the three yield components during 2007 to 2014. The results showed that the yield of barley varieties （lines） in this experiment was high， and the highest one reached 8 5620 kg·hm-2. In different years， the correlation coefficient of effective panicles and yield， filled grain number per panicle and yield had negative and positive effect， while the correlation between 1 000 grain weight and yield was positive. The correlation coefficients of effective panicle number， filled grain number per panicle and 1 000 grain weight with yield were 009， 029 and 043 in combined different years data. In different years， the correlation coefficient of yield and three yield components were different among three control varieties， however the correlation coefficients of the effective panicle number and yield were all positive. The results indicated that the relationship of 1 000 grain weight and yield was the biggest among different varieties， and the relationship of effective panicle number and yield was most stable among different years for the same variety.

Key words: barley, yield, yield component, correlation coefficient