【摘要】 选用9个玉米自交系按Griffing方法4组配36个单交组合,采用三次重复随机区组排列对玉米穗粗等10个农艺性状与子粒产量的关系进行了多元回归和通径分析。逐步回归表明:穗粗、穗行数、千粒重、株高对产量的影响达到显著水平。以产量为依变量,以这4个性状为自变量进行通径分析和相关分析得出:穗粗、千粒重对产量具有重要作用,株高次之,穗行数的作用相对较小。更多还原

【Abstract】 Eight maize inbred lines used were crossed according to Griffing’s methed four,36 single crosses were got. Multiple regression and path analysis of ear diameter etc ten characters with grain yield of maize were randomized block design of three replication.The result of multiple regression showed that ear diameter,ear rows,1000 kernel weight and plant height with grain yield were significant. The result of path analysis indicated that relative importance of the four characters with grain yield of maize was ear diameter>1000 kernel weight> plant height> ear rows.更多还原