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运用灰色系统理论中杂交组合灰色评判原理与方法,对60个玉米组合的产量和9个产量因素进行灰色关联分析及综合评判,以明确不同玉米杂交组合产量和产量构成因素之间的关系。结果表明:秦巴山区玉米杂交组合产量与主要农艺性状的关联度大小排序为穗粗>百粒重>穗长>穗位高>穗行数>行粒数>出子率>株高>秃顶长。组合46综合性状最好(G=0.881),组合52次之(G=0.861),组合54综合性状最差(G=0.552),综合评判结果与杂交组合在生产实际中表现基本一致。
Gray relational analysis and comprehensive evaluation of yield and yield of 60 maize combinations were carried out by using gray system theory and method of gray combination theory to determine the relationship between yield and yield components of different maize hybrid combinations. The results showed that the correlations between yield and main agronomic traits of maize hybrids in Qinba Mountain were as follows: ear diameter> 100-grain weight> ear length> ear height> ear number> grain number> seed rate> height> baldness long. Combination 46 had the best combination of traits (G = 0.881), combination of 52 times (G = 0.861) and combination 54 (G = 0.552). The results of comprehensive evaluation were basically consistent with those of hybrid combination in production practice.