342 LINDSTROM, GENETICAL RESEARCH WITH MAIZE 
aleuron color. The other is an allelomorph of the triple allelomorphic 
series B, Bw and b. The relations of these factors are most clearly shown 
in the following table: — 
PLANT AND ANTHER COLORS 
(Emerson 1921a) 
Plant Anthers 
A BRL R's purpler N PR ie CE TE 
A BY P/R" — weak purple pig BAe ene ET 00 PE 5 
A’ BUPER? — purple ine te a teen eee eee 
A BXpERT =Ssun red ste ee a N 
A B® pl R" — weak sun red uN a Lee > % 
Ar, BrplaRinrssunsred ET Re LENS AE EEA 
Â'B PUR? — dilute-purple ss ve 2 ae a 
A’ bb PLRG— green MARNE case a 
A b pl R* — dilute sun tea Pag ed aie TRE Ry OO a er 
Ab ple RY green tard MEN SE RSR RES 
a B-Pl -— brown ' à 
a B pl — green (or slight pete in shonin rd 
Ge — , (or slight brown in tassel) 6 
ab Pl re — | (considerable brown in tassel) 5 
ab pl — 
„ . . . . „ 
Factor 7? has the same en on ru solo: as s Rt, a 7s the same 
effect as RS. 
When a purple plant that is heterozygous for the three fundamental 
factors Aa Bb Pl pl (Rr Rr or r! vr) is self-fertilized the following trihy- 
brid ratio results: — 
27 A B Pl — purple stalk, leaves and tassel; anthers purple. 
9 AB pl — sun-red pink. 
” - 2» 2 LEA ed 
9AbPl—dilute purple, . | , purple. 
3 À b pl — dilute sun-red ,, je à ig pink. 
9a BPl— brown , ig p Fi ee green. 
3 a B pl — green 5 x 5 is = à 
3 a b PI — à SLR rs en i 
labpl— „ ja = 5 be 
Striking confirmations of this hypothesis are evident when the dilu- 
