﻿41 
  

  

  of 
  fruit, 
  and 
  we 
  find 
  we 
  may 
  do 
  with 
  plants 
  just 
  about 
  what 
  we 
  do 
  

   with 
  animals, 
  only 
  not 
  quite 
  so 
  quickly, 
  because 
  animal 
  protoplasm 
  

   responds 
  more 
  readily. 
  

  

  Mr. 
  W. 
  C. 
  Reed: 
  I 
  would 
  like 
  to 
  ask 
  if 
  in 
  a 
  cross 
  between 
  the 
  

   Persian 
  walnut 
  and 
  the 
  shagbark 
  hickory 
  there 
  is 
  a 
  cross 
  polleni- 
  

   zation, 
  or 
  is 
  it 
  an 
  increased 
  vitality 
  given 
  by 
  the 
  pollen? 
  Is 
  there 
  

   really 
  a 
  cross 
  there? 
  

  

  Dr. 
  Morris: 
  I 
  made 
  one 
  cross 
  between 
  the 
  Persian 
  walnut 
  

   and 
  the 
  shagbark 
  hickory 
  that 
  was 
  evidently 
  a 
  good 
  hybrid, 
  It 
  

   showed 
  character 
  of 
  both 
  parents, 
  but 
  I 
  lost 
  that 
  entire 
  lot. 
  I 
  

   wasn't 
  careful 
  enough 
  in 
  protecting 
  them. 
  I 
  have 
  another 
  lot 
  of 
  

   crosses 
  between 
  these 
  two 
  flowers 
  in 
  which 
  the 
  type 
  often 
  is 
  so 
  def- 
  

   initely 
  shagbark 
  hickory 
  that 
  I 
  doubt 
  if 
  there 
  is 
  any 
  walnut 
  there 
  

   at 
  all. 
  Under 
  certain 
  conditions 
  we 
  maj^ 
  get 
  hybrids, 
  yet 
  miss 
  it 
  

   at 
  another 
  time, 
  even 
  when 
  working 
  with 
  the 
  same 
  parents. 
  Some- 
  

   body 
  has 
  probably 
  made 
  a 
  better 
  study 
  of 
  this 
  point 
  and 
  recorded 
  

   better 
  ideas. 
  I 
  think 
  we 
  may 
  safely 
  say 
  that 
  we 
  may 
  expect 
  an 
  

   actual 
  cross 
  between 
  some 
  walnuts 
  and 
  hickories. 
  

  

  Mr. 
  McCoy: 
  Would 
  it 
  be 
  possible 
  to 
  cross 
  the 
  English 
  walnut 
  

   and 
  the 
  black 
  walnut 
  and 
  produce 
  a 
  nut 
  of 
  superior 
  quality? 
  

  

  Dr. 
  Morris: 
  Yes, 
  it 
  is 
  possible 
  to 
  cross 
  them, 
  but 
  you 
  do 
  not 
  

   often 
  get 
  a 
  nut 
  of 
  superior 
  quality. 
  The 
  tendency 
  seems 
  to 
  be 
  to 
  

   have 
  a 
  nut 
  of 
  thick 
  shell 
  and 
  of 
  not 
  high 
  quality, 
  but 
  if 
  you 
  make 
  a 
  

   thousand 
  of 
  those 
  crosses, 
  out 
  of 
  the 
  thousand 
  j^ou 
  may 
  get 
  a 
  few 
  

   of 
  just 
  what 
  you 
  want. 
  

  

  Professor 
  Close: 
  I 
  want 
  to 
  ask 
  if 
  you 
  are 
  alwaj's 
  careful 
  to 
  

   apply 
  the 
  pollen 
  when 
  it 
  is 
  well 
  ripened? 
  

  

  Dr. 
  Morris: 
  Yes, 
  I 
  have 
  always 
  been 
  careful 
  to 
  apply 
  it 
  at 
  

   just 
  the 
  time 
  when 
  it 
  was 
  well 
  ripened, 
  and 
  that 
  is 
  of 
  great 
  impor- 
  

   tance 
  in 
  its 
  bearing 
  upon 
  Mr. 
  Reed's 
  question. 
  If 
  I 
  have 
  pollen 
  

   which 
  is 
  quite 
  ripe 
  I 
  may 
  perhaps 
  catch 
  it 
  upon 
  an 
  ovule, 
  but 
  if 
  it 
  is 
  

   not 
  ripe 
  I 
  won't 
  get 
  the 
  cross. 
  I 
  may 
  add 
  it 
  a 
  little 
  too 
  early 
  or 
  too 
  

   late 
  when 
  the 
  pistillate 
  flower 
  is 
  unprepared 
  and 
  I 
  won't 
  get 
  a 
  cross. 
  

   If 
  I 
  get 
  my 
  pollen 
  just 
  at 
  the 
  right 
  time 
  upon 
  the 
  pistillate 
  flowers 
  

   I 
  may 
  have 
  a 
  good 
  cross, 
  between 
  varieties 
  which 
  do 
  not 
  cross 
  readily. 
  

  

  Professor 
  Close: 
  In 
  my 
  experience 
  in 
  breeding 
  apples, 
  formerly 
  

   I 
  always 
  waited 
  until 
  the 
  pollen 
  was 
  ripe, 
  and 
  that 
  meant 
  I 
  had 
  to 
  

   cover 
  the 
  blossoms 
  with 
  bags 
  and 
  depend 
  on 
  the 
  weather 
  for 
  con- 
  

   ditions 
  favorable 
  to 
  pollenation. 
  But 
  four 
  or 
  five 
  years 
  ago 
  I 
  be- 
  

   gan 
  poUenating 
  much 
  earlier 
  and 
  I 
  have 
  had 
  good 
  results. 
  

  

  Dr. 
  Morris: 
  That 
  is 
  a 
  very 
  important 
  point. 
  

  

  Professor 
  Close: 
  By 
  doing 
  that 
  I 
  know 
  it 
  is 
  pollenated. 
  I 
  

  

  