﻿144 
  Harper: 
  Inheritanxe 
  of 
  sugar 
  

  

  pollinated 
  Fo's 
  from 
  crosses 
  between 
  sweet 
  and 
  flint, 
  but 
  report 
  

   in 
  detail 
  on 
  only 
  one 
  fourth 
  of 
  them, 
  the 
  remainder 
  showing 
  as 
  

   they 
  say 
  "nothing 
  different." 
  They 
  (p. 
  34) 
  state 
  that 
  In 
  the 
  Fi 
  

   dominance 
  is 
  apparently 
  complete. 
  "In 
  no 
  case 
  was 
  there 
  the 
  

   slightest 
  difference 
  betvv^een 
  the 
  homozygous 
  and 
  the 
  heterozygous 
  

   seeds 
  either 
  in 
  outward 
  appearance 
  or 
  in 
  the 
  character 
  of 
  the 
  

   starch 
  cells 
  when 
  examined 
  microscopically" 
  though 
  they 
  note 
  

   the 
  occasional 
  occurrence 
  of 
  the 
  curious 
  chimaera 
  kernels 
  with 
  

   one 
  side 
  smooth, 
  the 
  other 
  side 
  wrinkled, 
  which 
  were 
  also 
  observed 
  

   by 
  Correns 
  and 
  others. 
  They 
  further 
  concluded 
  that 
  the 
  char- 
  

   acters 
  starchy 
  and 
  sweet 
  are 
  the 
  same 
  in 
  all 
  races 
  so 
  that 
  all 
  crosses 
  

   behave 
  alike. 
  They 
  had 
  not 
  of 
  course 
  tested 
  at 
  this 
  time 
  the 
  

   crosses 
  between 
  waxy 
  and 
  sweet, 
  later 
  described 
  by 
  Collins. 
  

  

  East 
  and 
  Hayes 
  report, 
  however, 
  that 
  ears 
  Intermediate 
  

   between 
  sweet 
  and 
  flint 
  do 
  appear 
  in 
  various 
  races 
  of 
  sweet 
  corn 
  

   and 
  may 
  give 
  trouble 
  to 
  canneries 
  since 
  they 
  transmit 
  the 
  char- 
  

   acter. 
  They 
  state 
  that 
  such 
  ears 
  appear 
  In 
  ratios 
  not 
  to 
  exceed 
  

   one 
  in 
  10,000, 
  but 
  do 
  not 
  give 
  the 
  detailed 
  statistical 
  data 
  on 
  which 
  

   the 
  numbers 
  are 
  based. 
  They 
  also 
  report 
  one 
  case 
  in 
  which 
  three 
  

   semi 
  starch 
  ears 
  appeared 
  In 
  the 
  progeny 
  of 
  an 
  extracted 
  recessive 
  

   from 
  a 
  cross 
  of 
  Illinois 
  High 
  Protein 
  Dent 
  by 
  Black 
  Mexican 
  

   Sweet. 
  The 
  entire 
  ear 
  was 
  "rather 
  uniformly 
  semi 
  starchy." 
  

   The 
  off'sprlng 
  of 
  its 
  more 
  starchy 
  kernels 
  varied 
  from 
  as 
  starchy 
  

   as 
  the 
  parent 
  to 
  more 
  starchy. 
  Those 
  from 
  the 
  less 
  starchy 
  kernels 
  

   were 
  In 
  part 
  good 
  sweet 
  kernels 
  and 
  in 
  part 
  semi 
  starchy. 
  Seeds 
  

   could 
  be 
  selected 
  which 
  formed 
  a 
  series 
  running 
  from 
  true 
  sweet 
  

   to 
  true 
  starchy. 
  They 
  reject 
  the 
  Idea 
  of 
  impure 
  segregation 
  as 
  

   accounting 
  for 
  such 
  observations 
  and 
  hold 
  that 
  "dominant 
  

   starchmess 
  — 
  if 
  it 
  is 
  the 
  same 
  dominant 
  starchiness 
  — 
  has 
  been 
  

   formed 
  anew." 
  They 
  recognize 
  also 
  that 
  certain 
  races 
  of 
  sweet 
  

   corn 
  (Crosby) 
  tend 
  to 
  have 
  plumper 
  kernels 
  than 
  others. 
  Still 
  in 
  

   spite 
  of 
  all 
  this 
  they 
  persist 
  In 
  regarding 
  the 
  factors 
  for 
  sweet 
  and 
  

   starchy 
  as 
  fixed 
  and 
  recognizably 
  distinguishable 
  categories. 
  

   In 
  a 
  footnote 
  (pp. 
  40-44) 
  they 
  argue 
  the 
  possibility 
  that 
  when 
  

   pop 
  corns 
  are 
  pollinated 
  by 
  sweet 
  corns 
  the 
  smaller 
  size 
  of 
  the 
  

   kernels 
  on 
  intermediate 
  ears 
  may 
  lead 
  to 
  their 
  being 
  more 
  nearly 
  

   filled 
  by 
  the 
  endosperm 
  materials 
  and 
  hence 
  less 
  wrinkled 
  in 
  

   appearance, 
  they 
  do 
  not 
  however 
  give 
  any 
  further 
  data 
  o.n 
  this 
  

  

  