Figure 6.

Segregation of senescence phenotype and the wild-type Sbe2a allele in a BC₁F₂ population. The wild-type Sbe2a allele was amplified from DNA extracted from each of 52 plants at 32 DAE using primers 2A2 and 2A32. The molecular mass of two of the bands within the 1-kb ladder (L) are shown to the left. The phenotype observed for each plant is indicated above each lane as normal (N) or senescent (S). Plants 18 and 39 displayed senescence at 10 to 32 DAE, and reduced senescence after 50 DAE.