Figure 6.

Measurement of reproductive architecture and yield of mature hybrid plants. A, Examples of mature plants of C24, Ler, and Col and their hybrid offspring. B to D, The three key structural traits of the mature plant. E to J, Various yield traits. Percentages above bars are levels from MPV (red dashed line). Red asterisks indicate significant differences from MPV, and black asterisks indicate above BPV (Student's t test P < 0.05). Statistical comparisons among the hybrids (uppercase letters) and among the parents (lowercase letters) are shown (Student's t test P < 0.01). K, A dendogram depicting the relationship between the major source component (rosette size) and the major sink component (branching complexity) on various yield traits in the hybrids. There are two major clades identified in blue and orange. Traits in green are positively correlated with rosette size at maturity. Traits in red are negatively correlated with increasing number of branches. Total seed production sits as an outgroup in this relationship of traits, consistent with it being the cumulative outcome of the other traits. All error bars are sem. n = 15 to 28 in B to E and I, n = 40 to 105 in F and G, n = 337 to 6,926 in H, and n = 5 to 6 in J (Supplemental Table S11).