Figure 3
From: Gene expression analyses in maize inbreds and hybrids with varying levels of heterosis
Relationship between parental genetic diversity and hybrid heterosis among traits and hybrids. The percentage better parent heterosis (BPH) for each hybrid is plotted against the genetic distance between parents. The 25 hybrids were scored based on percentage BPH for five traits (plant final height, days to flowering, weight of 50 seeds, 11-day height and 11-day biomass). Traits measured on field-grown plants are shown in (A) and traits measured on greenhouse-grown plants are shown in (B). Average percent BPH is shown based on two field replicates (A) and three greenhouse replicates (B). Spots representing crosses between stiff stalk (SS) and non-stiff stalk (NSS) groups are shown in red, and spots representing crosses within either group are shown in blue. The Pearson's R correlation value and p-value of the regression are shown for each trait. The six hybrids that were used for expression profiling are labelled in each of the five plots.