黑龙江省北部早熟玉米品种主要农艺性状的遗传变异和相关分析

为指导黑龙江省高寒地区玉米育种与生产,对18个早熟玉米品种的9个主要农艺性状进行变异系数分析。结果表明:秃尖长的变异系数最大,穗位高次之,容重的变异系数最小;主要农艺性状间相关分析表明:株高与穗位高、穗长与穗粗之间存在极显著的正相关关系,穗粗与产量之间存在显著的正相关关系。

Genetic Variability and Correlation Analysis of the Main Agronomic Traits in Early Maturing Maize Varieties in Northern of Heilongjiang Province

For the purpose of guiding maize breeding and production in the alpine region of Heilongjiang province,nine agronomic traits of 18 early maturing maize varieties were analyzed by comparing the coefficient of variation.The results showed that:the coefficient of variation of the bald tip was the highest,followed by ear height,the bulk density was the lowest;The correlation analysis on main agronomic traits showed that:plant height and ear height,ear length and ear diameter had the highly significant positive correlation,there was a significant positive correlation between ear diameter and yield.