Fig. 2
From: Genetic mapping and genomic selection for maize stalk strength
Distribution of and analysis process for genotypic data in the LR (Zheng58 × HD568) population. The outmost layer with the scale represents ten chromosomes in maize. a Distributed proportion of each polymorphic SNP within the RIL population. The red color represents the ratio of individuals with genotypes derived from Zheng58; green color represents the ratio of individuals with genotypes derived from HD568; gray color is the reference line for 0.5. b Distribution of chi-square values for each SNP within ten chromosomes. The green color denotes unqualified markers with P values lower than 0.05. c Density of qualified SNPs based on the chi-square test (1.0 Mb window size). The scale with different colors is an indicator of the number of markers within the unit window size, and the numbers from inner to outer are 0 to 50 with spacing of 10. d Physical distribution of bin markers on each chromosome. e Distribution of bin markers in the linkage map. Gray lines denote the comparison of the order of bin markers shared between physical and genetic maps