﻿166 
  

  

  Harper: 
  INHERITA^XE 
  of 
  sugar 
  

  

  1 
  

  

  dimpled 
  dent 
  kernels, 
  No. 
  751 
  of 
  intermediate 
  kernels 
  and 
  No. 
  752 
  

   of 
  sweet 
  kernels.. 
  All 
  these 
  were 
  grown 
  and 
  pollinated 
  by 
  the 
  

   intermediate 
  from 
  Ruby 
  Sweet 
  X 
  Black 
  Mexican, 
  No. 
  763, 
  as 
  

   male 
  parent. 
  The 
  ears 
  obtained 
  in 
  this 
  way 
  were 
  all 
  small 
  as 
  a 
  

   result 
  of 
  the 
  selfing 
  in 
  the 
  F2 
  and 
  F3. 
  The 
  kernels 
  selected 
  as 
  

   dimpled 
  dents, 
  No. 
  750, 
  failed 
  to 
  come 
  so 
  no 
  results 
  in 
  this 
  par- 
  

   ticular 
  combination 
  were 
  obtained. 
  

  

  The 
  intermediate 
  kernels 
  from 
  this 
  ear 
  gave 
  two 
  ears, 
  751 
  a 
  

   and 
  d, 
  with 
  almost 
  wholly 
  intermediate 
  and 
  sweet 
  kernels, 
  two 
  

   ears 
  on 
  one 
  stalk, 
  751 
  c 
  1 
  and 
  c 
  2 
  wholly 
  flint 
  in 
  type, 
  and 
  one 
  ear, 
  

   751 
  6 
  which 
  gave 
  flint, 
  intermediate, 
  and 
  sweet 
  kernels. 
  The 
  

   classes 
  are 
  shown 
  in 
  Table 
  III, 
  section 
  i, 
  A; 
  48+ 
  per 
  cent 
  are 
  

   starchy, 
  31+ 
  per 
  cent 
  intermediate, 
  and 
  20+ 
  per 
  cent 
  sweet. 
  

  

  TABLE 
  III. 
  Out 
  cross 
  in 
  1916, 
  F3 
  of 
  race 
  selected 
  as 
  

  

  FROM 
  

  

  Wisconsin 
  White 
  Dent 
  by 
  Black 
  Mexican 
  Sweet 
  X 
  the 
  Fi 
  intermediate 
  

  

  FROM 
  A 
  CROSS 
  BETWEEN 
  TWO 
  SWEET 
  TYPES, 
  RUBY 
  SwEET 
  X 
  BlACK 
  MEXICAN 
  

  

  Sweet 
  

  

  I. 
  Ear 
  164 
  h 
  as 
  parent 
  

   A, 
  Intermediale 
  kernels 
  planted 
  

  

  Ear 
  Nos, 
  

  

  751 
  a. 
  - 
  ■. 
  

  

  751 
  b 
  

  

  751 
  C~l 
  

  

  751 
  C-2 
  

  

  751 
  d, 
  

  

  Flint 
  

  

  Intermediate 
  

  

  Sweet 
  

  

  114 
  

  

  78 
  

   292 
  

  

  3 
  

  

  186 
  

   67 
  

  

  487 
  

  

  61 
  

  

  77 
  

   67 
  

  

  57 
  

  

  314 
  

  

  201 
  

  

  The 
  distinction 
  between 
  sweet 
  and 
  intermediate 
  in 
  all 
  these 
  

  

  ery 
  

  

  the 
  three 
  classes 
  present 
  was 
  obvious. 
  The 
  results 
  are 
  of 
  interest 
  

   as 
  showing 
  that 
  in 
  this 
  out 
  cross, 
  though 
  the 
  new 
  male 
  parent 
  

   came 
  from 
  two 
  sweet 
  parents, 
  the 
  capacity 
  to 
  produce 
  kernels 
  

   and 
  even 
  entire 
  ears 
  of 
  the 
  full 
  starchy 
  type 
  has 
  not 
  disappeared 
  in 
  

   this 
  intermediate 
  series. 
  The 
  fully 
  wrinkled 
  sugar 
  kernels 
  are 
  

   perhaps 
  even 
  more 
  persistent 
  though 
  pure 
  sweet 
  ears 
  w^ere 
  not 
  

   obtained. 
  

  

  Three 
  other 
  nubbins, 
  754 
  a-Cy 
  from 
  intermediate 
  kernels 
  of 
  

   ear 
  164 
  6, 
  were 
  obtained 
  from 
  ears 
  grow^n 
  in 
  the 
  greenhouse 
  but 
  

   were 
  too 
  poorly 
  developed 
  to 
  be 
  considered. 
  

  

  A 
  

  

  