﻿AND 
  STARCH 
  CHARACTERS 
  IN 
  CORN 
  . 
  165 
  

  

  selfed 
  ears 
  was 
  grown 
  and 
  the 
  silks 
  pollinated 
  from 
  another 
  

   coffee-colored 
  intermediate 
  obtained 
  by 
  crossing 
  two 
  well-marked 
  

   sweet 
  races. 
  The 
  male 
  parent 
  of 
  this 
  intermediate 
  was 
  the 
  Black 
  

   Mexican 
  Sweet 
  used 
  in 
  the 
  parentage 
  of 
  the 
  series 
  so 
  far 
  considered. 
  

   The 
  female 
  parent 
  was 
  Ruby 
  Sweet, 
  a 
  form 
  obtained 
  from 
  Childs 
  

   in 
  1913 
  and 
  grown 
  and 
  selfed 
  in 
  that 
  year. 
  Kernels 
  from 
  one 
  of 
  

   these 
  selfed 
  ears 
  were 
  grown 
  in 
  1914 
  and 
  crossed 
  with 
  Black 
  

   Mexican 
  Sweet. 
  The 
  Fi 
  ears 
  so 
  obtained 
  showed 
  a 
  mixture 
  of 
  

   sweets 
  and 
  Intermediates 
  and 
  the 
  intermediate 
  kernels 
  selected 
  

   from 
  one 
  of 
  these 
  ears 
  (74 
  a) 
  were 
  made 
  the 
  starting 
  point 
  for 
  a 
  

   series 
  of 
  intermediates 
  which 
  have 
  been 
  continued 
  now 
  through 
  

   four 
  Inbred 
  generations 
  (1914-1918). 
  These 
  intermediates 
  did 
  

   not 
  at 
  once 
  breed 
  true. 
  They 
  showed 
  varying 
  proportions 
  of 
  

   sweets, 
  Intermediates, 
  and 
  fully 
  smooth, 
  flint-like 
  kernels. 
  Hal- 
  

   stead 
  ('07, 
  '08, 
  '09) 
  has 
  described 
  a 
  similar 
  case 
  of 
  the 
  origin 
  of 
  an 
  

   intermediate 
  Malamo 
  from 
  two 
  sweet 
  races, 
  Malakan 
  and 
  Premo. 
  

   He 
  bred 
  the 
  type 
  for 
  a 
  number 
  of 
  years 
  with 
  open 
  pollination 
  and 
  

   by 
  selection 
  of 
  sweet 
  and 
  flinty 
  kernels 
  obtained 
  a 
  marked 
  increase 
  

   in 
  the 
  starchiness 
  and 
  sweetness 
  respectively 
  of 
  the 
  ears. 
  

  

  His 
  test 
  plpts 
  showed 
  ('08) 
  that 
  "ears 
  from 
  the 
  plot 
  planted 
  

   with 
  flinty 
  kernels 
  were 
  largely 
  flinty 
  while 
  the 
  sweet 
  grains 
  gave 
  

   ears 
  that 
  showed 
  as 
  a 
  rule 
  very 
  little 
  tendency 
  to 
  produce 
  starch." 
  

   He 
  did 
  not 
  obtain, 
  however, 
  In 
  either 
  case 
  types 
  which^ 
  would 
  

   breed 
  true. 
  They 
  probably 
  showed 
  a 
  wider 
  range 
  of 
  variability 
  

   than 
  was 
  represented 
  in 
  the 
  parents. 
  

  

  I 
  shall 
  describe 
  this 
  series 
  more 
  fully 
  in 
  the 
  discussion 
  of 
  the 
  

   use 
  of 
  these 
  intermediates 
  between 
  starch 
  and 
  sugar 
  types 
  as 
  

   special 
  meal 
  corns. 
  Intermediate 
  kernels 
  from 
  an 
  ear 
  of 
  the 
  Fi 
  

   (74 
  a) 
  of 
  this 
  Ruby 
  Sweet 
  X 
  Black 
  Mexican 
  cross 
  were 
  planted 
  

   and 
  used 
  as 
  the 
  male 
  parent 
  for 
  a 
  series 
  of 
  other 
  Intermediate 
  

   types, 
  including 
  those 
  between 
  Wisconsin 
  White 
  Dent 
  and 
  Black 
  

   Mexican 
  Sweet 
  which 
  we 
  have 
  been 
  considering. 
  The 
  male 
  and 
  

   the 
  mother 
  plants 
  were 
  planted 
  in 
  alternate 
  rows 
  and 
  the 
  mother 
  

   plants 
  were 
  simply 
  detasseled 
  and 
  left 
  to 
  open 
  pollination 
  from 
  

   the 
  coffee 
  colored 
  intermediate. 
  

  

  Three 
  lots 
  of 
  kernels 
  from 
  ear 
  164 
  h 
  (Table 
  HI, 
  section 
  i, 
  A) 
  

   were 
  planted 
  in 
  the 
  1916 
  plot 
  as 
  the 
  F4 
  generation 
  of 
  the 
  Wisconsin 
  

   White 
  Dent 
  V 
  Black 
  Mexican 
  Sweet 
  series. 
  No. 
  750 
  consisted 
  of 
  

  

  