﻿"Rogues" 
  among 
  Culinary 
  Peas 
  (Pisum 
  sativum). 
  189 
  

  

  progressively 
  in 
  succeeding 
  flowers, 
  falling 
  again 
  suddenly 
  after 
  the 
  fifth 
  

   flower. 
  We 
  are 
  satisfied 
  that 
  the 
  record 
  for 
  the 
  eighth 
  flower 
  is 
  quite 
  

   abnormal, 
  and 
  may 
  be 
  disregarded. 
  Further 
  observations 
  will 
  no 
  doubt 
  

   modify 
  the 
  figures 
  here 
  given, 
  but 
  the 
  general 
  trend 
  of 
  the 
  results 
  is 
  unmis- 
  

   takable. 
  

  

  Table 
  I. 
  — 
  Offspring 
  of 
  Pointed 
  Intermediate 
  Plants 
  (selfed 
  or 
  crossed 
  with 
  type) 
  

   grouped 
  according 
  to 
  the 
  ordinal 
  position 
  of 
  the 
  flowers 
  from 
  which 
  the 
  

   seeds 
  were 
  taken.* 
  

  

  Ordinal 
  

  

  

  

  Cross-fertilised. 
  

  

  

  

  

  

  

  No. 
  of 
  

  

  

  

  

  

  

  

  Self-fertilised. 
  

  

  

  

  

  

  

  

  flower. 
  

  

  Type-father. 
  

  

  Type-mother. 
  

  

  

  

  

  

  Non- 
  

  

  Pointed. 
  

  

  Ratio. 
  

  

  Non- 
  

  

  Pointed. 
  

  

  Ratio. 
  

  

  Non- 
  

  

  Pointed. 
  

  

  Ratio. 
  

  

  

  pointed. 
  

   57 
  

  

  

  

  pointed. 
  

  

  

  

  pointed. 
  

  

  

  

  1 
  

  

  54 
  

  

  1 
  : 
  1 
  -09 
  

  

  9 
  

  

  42 
  

  

  1:4-6 
  

  

  18 
  

  

  269 
  

  

  1:15-0 
  

  

  2 
  

  

  30 
  

  

  42 
  

  

  1-4 
  

  

  17 
  

  

  83 
  

  

  4-9 
  

  

  21 
  

  

  240 
  

  

  11 
  -4 
  

  

  3 
  

  

  65 
  

  

  46 
  

  

  0-7 
  

  

  8 
  

  

  56 
  

  

  7-0 
  

  

  18 
  

  

  231 
  

  

  12-8 
  

  

  4 
  

  

  56 
  

  

  64 
  

  

  1 
  -1 
  

  

  3 
  

  

  30 
  

  

  10 
  -o 
  

  

  15 
  

  

  228 
  

  

  15 
  -2 
  

  

  5 
  

  

  32 
  

  

  46 
  

  

  1-4 
  

  

  7 
  

  

  86 
  

  

  12-3 
  

  

  4 
  

  

  218 
  

  

  54 
  -5 
  

  

  6 
  

  

  26 
  

  

  37 
  

  

  1 
  -4 
  

  

  2 
  

  

  59 
  

  

  29-5 
  

  

  

  144 
  

  

  

  7 
  

  

  48 
  

  

  43 
  

  

  0-9 
  

  

  1 
  

  

  23 
  

  

  23 
  -0 
  

  

  1 
  

  

  91 
  

  

  

  8 
  

  

  34 
  

  

  41 
  

  

  1 
  -2 
  

  

  6 
  

  

  28 
  

  

  4-6 
  

  

  

  71 
  

  

  

  9 
  

  

  34 
  

  

  46 
  

  

  1 
  -3 
  

  

  

  8 
  

  

  

  

  

  

  10 
  

  

  25 
  

  

  27 
  

  

  1 
  -1 
  

  

  

  

  

  

  

  

  11 
  

  

  10 
  

  

  31 
  

  

  3-1 
  

  

  

  

  

  

  

  

  12 
  

  

  15 
  

  

  23 
  

  

  1 
  -5 
  

  

  

  

  

  

  

  

  13 
  

  

  30 
  

  

  23 
  

  

  2-3 
  

  

  

  

  

  

  

  

  14 
  

  

  5 
  

  

  27 
  

  

  5-4 
  

  

  

  

  

  

  

  

  15 
  

  

  2 
  

  

  8 
  

  

  

  

  

  

  

  

  

  16 
  

  

  3 
  

  

  3 
  

  

  

  

  

  

  

  

  

  17 
  

  

  2 
  

  

  1 
  

  

  

  

  

  

  

  

  

  

  454 
  

  

  562 
  

  

  1:1-2 
  

  

  53 
  

  

  415 
  

  

  l'i 
  7-8 
  

  

  77 
  

  

  1492 
  

  

  1 
  : 
  19 
  -4 
  

  

  The 
  series 
  on 
  the 
  female 
  side 
  is 
  much 
  longer, 
  because 
  the 
  fertilisations 
  

   were 
  largely 
  done 
  in 
  1916, 
  a 
  year 
  in 
  which 
  the 
  plants 
  grew 
  very 
  tall. 
  The 
  

   height 
  of 
  a 
  plant 
  depends 
  greatly 
  on 
  the 
  weather, 
  and 
  in 
  1917-19 
  short 
  

   plants 
  were 
  the 
  rule. 
  Naturally 
  it 
  can 
  only 
  be 
  on 
  tall 
  plants 
  that 
  the 
  

   contrast 
  between 
  the 
  composition 
  of 
  the 
  offspring 
  derived 
  from 
  the 
  lower 
  and 
  

  

  * 
  The 
  material 
  used 
  in 
  this 
  Table 
  is 
  necessarily 
  somewhat 
  heterogeneous. 
  It 
  includes 
  

   offspring 
  of 
  plants 
  which, 
  whether 
  selfed 
  or 
  crossed, 
  have 
  given 
  at 
  least 
  one 
  plant 
  

   as 
  high 
  as 
  Class 
  3. 
  To 
  have 
  extended 
  it 
  lower 
  would 
  have 
  involved 
  the 
  inclusion 
  of 
  

   families 
  from 
  plants 
  giving 
  all 
  rogues, 
  and 
  such 
  plants 
  could 
  not 
  exhibit 
  the 
  gradational 
  

   effect 
  which 
  would 
  thus 
  have 
  been 
  to 
  some 
  extent 
  masked. 
  Nevertheless, 
  a 
  few 
  of 
  

   these 
  ought, 
  no 
  doubt, 
  to 
  have 
  been 
  included 
  as 
  genetically 
  comparable. 
  The 
  figures 
  

   given 
  for 
  the 
  results 
  of 
  self-fertilisation 
  are 
  not 
  all 
  derived 
  from 
  the 
  plants 
  actually 
  

   used 
  for 
  the 
  crosses, 
  but 
  include 
  any 
  results 
  from 
  flowers 
  of 
  known 
  position 
  borne 
  

   by 
  comparable 
  plants. 
  

  

  