﻿AND 
  STARCH 
  CHARACTERS 
  IX 
  CORN 
  143 
  

  

  w 
  

  

  r 
  

  

  smooth 
  kernels, 
  3,388 
  wrinkled 
  kernels 
  and 
  12 
  somewhat 
  wrinkled. 
  

   He 
  includes 
  the 
  latter 
  with 
  the 
  smooth 
  Instead 
  of 
  as 
  above 
  with 
  

   the 
  wrinkled, 
  giving 
  75.4 
  per 
  cent 
  smooth, 
  24.6 
  per 
  cent 
  wrinkled. 
  

   Again 
  he 
  does 
  not 
  report 
  the 
  behavior 
  of 
  the 
  partly 
  wrinkled 
  

   kernels 
  when 
  grown. 
  He 
  also 
  further 
  tested 
  the 
  ratios 
  obtained 
  

   in 
  a 
  cross 
  between 
  Black 
  Mexican 
  sweet 
  and 
  Rice 
  Pop 
  Corn 
  var. 
  

   leucoceras, 
  and 
  found 
  in 
  the 
  selfed 
  F2 
  generation 
  an 
  excess 
  of 
  smooth 
  

   kernels. 
  Instead 
  of 
  75 
  per 
  cent 
  smooth 
  and 
  25 
  per 
  cent 
  wrinkled 
  

   he 
  obtained 
  In 
  an 
  extensive 
  series 
  84.5 
  per 
  cent 
  smooth, 
  15.6 
  

   per 
  cent 
  wrinkled. 
  In 
  another 
  extensive 
  series 
  81.9 
  per 
  cent 
  

   smooth 
  and 
  18 
  per 
  cent 
  wrinkled, 
  no 
  intermediates, 
  are 
  reported. 
  

   Correns 
  concludes 
  these 
  results 
  are 
  to 
  be 
  explained 
  not 
  on 
  an 
  

   assumption 
  of 
  segregation 
  in 
  some 
  other 
  than 
  a 
  i 
  :i 
  ratio 
  but 
  as 
  due 
  

   to 
  partial 
  failure 
  of 
  certain 
  combinations 
  to 
  develop, 
  or 
  to 
  selective 
  

   or 
  differential 
  pairing. 
  In 
  the 
  presence 
  of 
  a 
  great 
  excess 
  of 
  pollen 
  

   on 
  the 
  silk 
  certain 
  grains 
  might 
  well 
  take 
  precedence 
  by 
  reason 
  of 
  

   their 
  greater 
  vigor 
  in 
  the 
  particular 
  combination 
  possible 
  to 
  them. 
  

   I 
  am 
  discussing 
  these 
  sweet 
  X 
  pop 
  crosses 
  in 
  another 
  paper. 
  

  

  As 
  figured 
  by 
  Correns 
  and 
  as 
  I 
  find 
  them, 
  certain 
  sharply 
  

   pitted 
  {pi. 
  I, 
  /. 
  so) 
  and 
  chimaera-like 
  (p. 
  39) 
  kernels 
  of 
  the 
  Fi 
  are 
  

   quite 
  different 
  in 
  appearance 
  from 
  the 
  intermediately 
  wrinkled 
  

   kernels 
  noted 
  above. 
  Correns 
  does 
  not 
  test 
  the 
  behavior 
  of 
  these 
  

   pitted 
  and 
  half 
  and 
  half 
  kernels 
  when 
  grown 
  and 
  selfed. 
  It 
  is 
  not 
  

   impossible 
  that 
  they 
  owe 
  their 
  appearance 
  to 
  special 
  interactions 
  

  

  germ 
  

  

  happened 
  

  

  of 
  the 
  egg 
  and 
  male 
  nuclei 
  and 
  the 
  development 
  of 
  the 
  embryo. 
  

   I 
  shall 
  report 
  elsewhere 
  on 
  the 
  behavior 
  of 
  certain 
  of 
  these 
  kernels 
  

  

  when 
  grown 
  and 
  selfed. 
  

  

  Correns, 
  while 
  making 
  com 
  the 
  type 
  of 
  his 
  third 
  class 
  of 
  the 
  

   possible 
  combinations 
  of 
  dominance 
  and 
  segregation 
  (homo- 
  

  

  termediate 
  

  

  that 
  

  

  are 
  visibly 
  different, 
  does 
  so 
  on 
  the 
  grounds 
  of 
  the 
  behavior 
  of 
  

   aleurone 
  and 
  endosperm 
  colors, 
  etc.. 
  and 
  claims 
  ^^^^ 
  f"^ 
  f'^'^' 
  

   sugar 
  pair 
  are 
  heterodynamic 
  with 
  dominance 
  of 
  the 
  starch 
  char- 
  

   acterintheFxandlaterhybrids,(pp.67,86. 
  141). 
  

  

  some 
  

  

  