20年间吉林省玉米品种的产量及其相关性状分析

Analysis on Yield and Relevant Traits of Maize Varieties in Jilin Province in the Past Twenty Years

对吉林省1987～2007年审(认)定玉米品种主要性状进行分析。结果表明,20年间晚熟、中晚熟玉米品种审定最多,占总数的59%;早熟和中早熟审定最少。相关分析显示,吉林省玉米产量与生育期、单穗粒重、株高呈极显著高度正相关,与百粒重和穗位高达到显著中度相关,与穗长和穗行数无显著相关。20年间玉米的产量、生育期、单穗粒重、百粒重、株高和穗位高发生变化,且不同熟期变化不同,穗长和穗行数则没有显著变化。

Analysis of the main traits were carried out for maize varieties identified in Jilin province from 1987-2007.The results showed that late-maturing and middle-late-maturing maize varieties identified were the most,which reached 59% of the total,while early maturing and middle-early maturing maize varieties were the least in the past 20 years.Yield had highly significant positive correlation with growth period,single ear weight and plant height,significant moderate correlation with 100-kernel weight and ear height,and no significant correlation with ear length and row number of ear.In past 20 years,these traits including yield,growth period,single ear weight,100-kernel weight,plant height and ear height had significant change according to different maturity,while row number of ear and ear length had no significant difference.