s.'.o i\ r,nM.r:uKM;i'; intkiiwtkiwi.i; m; i,i:\i;tii.ii k. 



(lofinile coneUilidii in \rni,i charnclcrs of iiiiii/.c. LocU' reporls an exlensivc 

 séries of crosses \\ lnir ruldrctlanil wliile al enroue and slarcliy aiidswect enilos- 

 perm were involved and slales llial no corrclalion was found. In Iiis crosses, 

 however, bolli colorcdand wliile sweel varieties oecurred in tlie parental strains, 

 of llie individnal crosses. In such crosses, corrélations, if cansed Ijy Ihe 

 association of ciiaraclers in Uie parental strain, wonki be ohscurcd. Easl and 

 Hayes' sLatc llial in a cross hetwcen wliite IlinI and pnrple sweel varieties 

 tliere was no corrclalion. The lignres g-iven hy llicin simw a sliglit négative 

 corrélation belween lli(> colored aleuronc and sweet endosperni in sixoftiie 

 seven ears. In llie ollier earlhere was a slight posilive corrélation. Tiie lolals 

 sliowed a corrélation of. lildzOÔ'i. Thongli in lliis case llie corrélation is 

 nearly four limes llie probable error, il niay, of course, be only accidentai. 

 Four self-pollinalcd ears, llie progeny of colored starcliy seeds from the above 

 hvbrids. sliowed no signilicant corrélations. 



Inlierilanre of \\ axij Endosppiiii. 



In our experimenls fii'teen hybrids belween Cbinese maiz(> and .Viiicrican 

 varieties bave l)een carricd lo the second génération, eilher by self-poilinaliiig 

 first génération hybrid |ilants or by crossing two lirsl génération plants of the 

 same or différent hybrids. In ail, ^■^ ears were secured wilh a total of !2;2,."r>'J secds. 

 The ségrégation was complète, in every instance the seeds being eilher horny 

 or waxy, wilh no inlerniediales. The only doublful seeds thaï occur are in 

 instances where Ibe endosperni of the American variely used in the cross was 

 almosl entiieiy starchy, the horny or waxy piirtion lieing in some such cases so 

 reduccd in the hybrid as not lo be appar(>nl al lirsl sight. When carefully 

 scrutinized, however, the oulsidelayer, though very lhin,can beseen to be eilher 

 dislinctly horny or waxy. In niost instances the groupings were made indepen- 

 denllv by the twoautliors and the maximum diUVrenee inany car was Ihree seeds. 



Table I gives the results ol)lained in tlu' second génération viewed from 

 the standpoint of endosperm texture alone. The following labulation will serve 

 as an explanalion of the characlers used to designale the parent strains. 



DfiSir.NATKK SOOBCE AI.IIDRONE KNruiSPKnir 



OF VAIIIETV. OK SEED. COI.On. TKXTllIiE. 



A') To\ii5. r.S.A. While. I»ciil. 



Afi K:nis;is. r.S.A. Wliilo. ' llrrH. 



A 7 \iiziiiia. r.S.A. Pui-ple. Seiiii-sl;iiiliy. 



Il II China. Wliilo. W.ixy. 



Il ir> China. Rod. Wiivy. 



KT. CnaliMiiHla. Whilo. liml. 



>l I ....... . Moxico. White. H. m. 



M 2 Mexicd. Wliile. Iii'iil. 



1171 Mi-\ic-(i. While. Sl.nchy. 



>1 Snlvailcir. lîlack. Scini-slareliy. 



NU S.iK.ulor. lîlack. Semi-slarchy. 



A fiirther description of hybrids will be fonnd in thelatler part of Ihepaper 

 where the corrélation of endosperm cliaracter wilh aleurone color is discussed. 

 The individnal ears can be idcntified by Ihe pedigree nuniber. The expecled 

 ratio in ail thèse hybrid ears would be 2.') 0/0 waxy, if the characler behaved as 

 a monobybrid, and this ratio was approximated in inosl of Ihe ears. In 21 of 



1. LncK ,11.-11.,. Sliidios in l'iani, liiTcdiiis.' in Ih.' 'Ir(.|ii(>, 111. innnh lUninl Itnhinie GniilciiK. 

 Pfinilriilya, vol. 111. |il. i. \<M>. 



2. Kast E.-M.). ami IIavks (ll.-K. . InhiTilani-c in Mai/.', linll. Ili7. 0)h»cW/.»/ \,,ri,„/l,in,l h.rj),-- 

 rimciil Slalio». 1911, p. 71. 



