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应用通径分析,探讨了四川省阿坝地区玉米早熟杂交种主要数量性状对产量的影响。结果表明:行粒数、穗行数、粒重对产量的直接作用较大。其直接决定系数分别为0.8331、0.6429、0.4041;穗长和行粒数、穗行数和行粒数、穗行数和粒重以及行粒数和粒重对产量具有较大的间接作用,其间按决定系数分别为—0.7798、—0.4731、—0.4951、0.4520。因此,在高原海拔2650 m 生态条件下,应特别注意对玉米的行粒数、穗行数、粒重等性状进行
Through the path analysis, the effects of main quantitative characters of early maturing hybrid corn on yield in Aba, Sichuan Province were discussed. The results showed that the direct effect of grain number, ear number and grain weight on yield was larger. The direct coefficient of determination was 0.8331, 0.6429 and 0.4041 respectively. The length and number of rows and rows, the number of rows and rows of spikes, the number of rows and grains per panicle, the number of rows and grains of rows had a greater indirect effect on the yield According to the decision coefficients were -0.7798, -0.4731, -0.4951,0.4520. Therefore, under the ecological conditions of 2650 m above sea level, special attention should be paid to the traits such as grain number, ear number and grain weight of corn