Table 1. Description of various P1-mm alleles used in this study.

Allele	Origin
P1-mm-107E	Unknown
P1-mm-L	Maintained light pigmentation though repeated self pollination
P1-mm-H	Maintained heavy pigmentation though repeated self pollination
P1-mm-542A “RRa”	Revertant stock derived from P1-mm-H
P1-mm-7F32 “RRa”	Revertant stock derived from P1-mm-H
P1-mm CFS 287b	Unknown
P1-mm CFS 315 “RR”a, b	Revertant stock derived from P1-mm CFS 287
P1-mm CFS 289b	Possibly from San Juan, Pueblo, New Mexico
P1-mm CFS 291b	Unknown
P1-mm CFS 290b	U.S.A
P1-mm CFS 301b	Minnesota
P1-mm CFS 292b	Purchased from a store in Madison, WI
P1-mm CFS 297b	Tesuque, New Mexico
CFS286b	Misclassified as P1-mm; has phenotype and gene structure similar to P1-vv: Calea, Near Cuzco, Peru

^a“RR” denotes that the allele was a stable revertant of P1-mm that had red pericarp and red cob glumes pigmentation.

^bAlleles' origins are based upon Brink's annotation in [10]. The P1-mm CFS 315 allele has been previously called P1-rr CFS 315. We report a different name, because it has an identical gene structure as P1-mm.