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应用灰色关联度分析方法,对2010年参加辽宁省中熟玉米区域试验的10个玉米杂交组合的8个主要农艺性状进行分析。结果表明:各性状与产量的关联度大小排序为:百粒重、行粒数、出籽率、空秆率、穗长、秃尖长、穗粗和倒折率。百粒重、行粒数、出籽率、空秆率、穗长等因素与产量的关联度较高,对产量影响较大。百粒重和行粒数是辽宁省中熟玉米杂交种选育的主要影响因素。在选育中熟玉米品种时,应在保证适当百粒重和果穗长度的前提下,注重选育出籽率高,空秆率低的品种。
The gray relational analysis method was used to analyze the 8 main agronomic traits of 10 maize crosses which participated in the mid-maturity maize regional trial in Liaoning Province in 2010. The results showed that the order of the correlation degree between the traits and the yield was as follows: 100-grain weight, grain number per line, seed-yield rate, empty stalk rate, spike length, bald tip length, ear diameter and refold rate. One hundred kernel weight, row grain number, seed yield, empty stalk rate, spike length and other factors related to yield were higher, which had a great impact on the yield. One hundred kernel weight and row grain number are the main influencing factors for the breeding of mid-maturity hybrid maize in Liaoning Province. In the selection of cooked corn varieties, should ensure that the appropriate 100 grain weight and ear length under the premise, pay attention to breeding high seedling rate, empty stalk rate varieties.