title: Relationship between progeny growth performance and molecular marker-based genetic distances in Eucommia ulmoides parental genotypes.
abstract: Progeny performances, variations and combining abilities for growth traits were evaluated in a factorial mating design of Eucommia ulmoides. Three marker systems, sequence-related amplified polymorphism, amplified fragment length polymorphism, and inter-simple sequence repeat, were used to determine genetic distances between parents. Correlations of genetic distances with progeny performances, within-family coefficients of variation and specific-combining abilities were established for height and basal diameter traits. Significant positive correlations were found between progeny performances of growth traits and genetic distances of parents based on sequence-related amplified polymorphism markers or a combination of all 3 marker systems. This revealed that crosses between genetically distant parents produced progenies with excellent growth performances. The lack of correlations between parental genetic distances and within-family coefficients of variation or specific-combining abilities suggested that these characteristics were unpredictable. The results of this study represent a potential criterion to predict progeny performances and choose parents in the breeding program.
authors: College of Forestry, Northwest A&F University, Yangling, Shaanxi, China.
authors: Y
authors: Y
authors: Li
authors: College of Forestry, Northwest A&F University, Yangling, Shaanxi, China.
authors: Y C
authors: YC
authors: Wei
authors: College of Forestry, Northwest A&F University, Yangling, Shaanxi, China lizhouqi@nwsuaf.edu.cn.
authors: Z Q
authors: ZQ
authors: Li
authors: College of Forestry, Northwest A&F University, Yangling, Shaanxi, China.
authors: S H
authors: SH
authors: Wang
authors: College of Forestry, Northwest A&F University, Yangling, Shaanxi, China.
authors: L
authors: L
authors: Chang
mesh_terms: D001947:Breeding; D003433:Crosses, Genetic; D031283:Eucommiaceae / Q000235:genetics*; D005819:Genetic Markers; D005838:Genotype; D006823:Hybrid Vigor; D010641:Phenotype; D012150:Polymorphism, Restriction Fragment Length; D019655:Quantitative Trait, Heritable
chemical_list: D005819:Genetic Markers