214 



The Journal of Heredity 



These results indicate clearly that 

 the ditTerences observed in the seeds 

 borne on the l*", i)lants were j^enetically 

 sij^Miit'icant. but that by mere inspection 

 the separation of the dilTerent classes 

 could not be made with complete accu- 

 racy. This was. in some measure, due 

 to the wrinkled nature of the seed 

 borne on the F, plants. Since many 

 of the V.^ plants bore seeds which were 

 l)Iump. but which still exhibited the 

 liard. intermediate or soft endosperm. 

 separations could be made with much 

 greater but still not complete jjrecision. 



This is shown in the results of a con- 

 tinuation of the study of the offspring 

 of the F, plant Xo. 16-5 into the third 

 generation. An F., plant of the 1915 

 crop ( Xo. 16-5-1-15) having seeds re- 

 corded as 287c hard («) and 72% in- 

 termediate (h) or soft (c) was planted 

 indiscriminatelv (as Xo. 26.^) and gave, 

 in l')l6. 4<) i)lants of which 8 ( 16^; ) 

 had all hard ( </ ) seed; .^2 (65%) had 

 a mixture of hard (a) intermediate 

 (/;) and soft (r) seeds and 9 (19%) 

 had all soft seed (r). Selected seed 

 from the same mother i)lant gave the 

 following results : 



(a) Like Plate 111. Fig. a. (b) Like Plate III, Fig. b. (r) Like Plate III, Fig. r. 



Six i)laiUs from the olTspring of X(j. selected plants and tin- character of 

 263 were selected for a ftu'ther study. their ofTspring are summari/.eil in the 

 The nature- of the seeds borne on these lollowing table: 



Tahi-I-; ill. Inlieritance of h'.ndosper)n Texture in Mucnroni Brend ll'lieal Crosses 



Character of ofTspring in 1917 



Character of seed of 

 mother plant 



Selected 

 mother 

 plant No. Inter- 



H.inl ((/) mediate (b) Soft (r) 

 or soft (c) 



Per cent Per cent Per cent 



263-7 100 



263-14 52 4X 



26.^-23 1(K) 



263-30 <i() M 



263-48 10(1 



263-49 KID 



Kind of 



seed 



selected for 



])lanting 



F4 plants liaving seeds 



I Mixture of 

 1 hard (a) in- ' 

 .\1I luinl (a) termediate All soft (c) 

 {b) and soft ; 

 ic) 



