玉米数量性状相关遗传力的研究

本文对玉米28个双列杂交组合的8个数量性状进行相关遗传力分析。结果表明，通过穗粗在早代间接选择单株产量可达到对单株产量进行直接选择的效率，在选择强度相同时，而通过其它性状间接选择的效率均比对单株产量的直接选择效率低。通径分析表明，通过稳行数、千粒重和株高在早代选择单株产量也可获得理想的效果．

Study on Correlative Heritability of Quantitative Characters in Maize

hybrids of ciallel cross were used for correlative heritability analysis on 8 quantitative charscters in maize. The results showed that indirect selection for yield per plant by ear diameter at early generation could achieve the efficincy of direct selection for yield per plant.When selection strength was same,but indirect selection efficincy by other characters was less than direct selection efficincy.The path analysis showed that selection for yield per plant by rows per spike,1000 grain weight and plant height at early generation could also achieve ideal results.