Abstract: Objective: To compare the yields among different barley varieties and clarify the impact of tillering performance on yield.
Methods: This experiment selected 8 different varieties of barley to conduct field trials in Dali, Yunnan. A randomized block design was adopted to investigate the emergence rate and tiller number, followed by yield determination and seed quality analysis. Additionally, the correlation between each agronomic trait and yield was compared and analyzed. Results: V43 achieved the highest yield, followed by black barley and ZD9, with variety exerting an extremely significant effect on yield. The tillering within 42-58 days after barley sowing had a significant impact on the final effective tiller number. Therefore, it was recommended to strengthen field management after 40 days of sowing to increase yield. The emergence rate, effective tiller number per plant, dry weight of 10 ears, grain weight of 10 ears, and 100-grain weight all exhibited a positive correlation with yield; the dry weight of 10 ears was extremely significantly and positively correlated with the grain weight of 10 ears. The grey correlation degrees between various agronomic traits of barley and yield, in descending order, were as follows: 100-grain weight, emergence rate, effective tiller number per plant, grain weight of 10 ears, and dry weight of 10 ears. Conclusion: Effective tillering has a significant impact on yield, and strengthening field management after 40 days of sowing is beneficial for improving yield. V43 demonstrated the most favorable performance, making it an ideal superior variety, followed by black barley and ZD9.

Key words: barley, variety, yield, tillering, grey correlation degrees