Relations Between Genetic Distance and Yield Heterosis in Popcorn in Jilin Province
吉林爆玉米遗传距离与杂种优势关系的研究 Relations Between Genetic Distance and Yield Heterosis in Popcorn in Jilin Province

An experiment was conducted in 1990 to 1991 at the university,to study the relationships between genetic distance,cluster analysis and hetcrosis in popcorn(Zea mays var.everta).Results showed that there is no sense in cludtering parental lines for prediction of yield heterosis,but blood pedigree can be identifed from cluster analysis.The relation between genetic divergence or distance and yield heterosis of F1 hybrids can be predicted from the genetic distances of their parental lines according to this model,but no definite relation could be found between parental genetic divergence and the quality heterosis of F1 hybrids.