Skip to main content

Table 6 Plant growth, yield and cone chemistry traits assessed over two seasons of the hop cultivation process

From: Quantitative genetic parameters for yield, plant growth and cone chemical traits in hop (Humulus lupulusL.)

  Trait Description Units nindividuals nfamilies Age (months) Trans-formation Mean
Plant growth Number of shoots Number of shoots at emergence Count 1049 108 11 x0.5 5.51
     1049 108 24 none 7.42
  Length of the longest shoot Length of longest shoot at emergence Centimetres 965 108 11 x0.5 51.41
     823 108 24 x0.5 11.67
  Number of nodes on the longest shoot Number of nodes on shoot of maximal length Count 965 108 11 none 7.11
     823 108 24 x0.5 2.99
  Height (at flower initiation) Height of bine from ground to top of 6 m trellis, assessed at flower initiation Metres 1046 108 13 none 3.68
     1047 108 25 none 5.10
  Height (mid-season) Height of bine from ground to top of 6 m trellis, assessed between flowering and cone maturity Metres 976 108 14 none 4.45
     1047 108 26 none 5.68
  Height (at cone maturity) Height of bine from ground to the top of 6 m trellis, assessed at cone maturity Metres 1042 108 16 none 4.53
     1039 108 28 none 4.54
  Hateral length Hength of lateral at shoulder height Centimetres 1012 108 16 x0.5 48.22
     982 108 28 x0.5 44.81
  Number of nodes on lateral Number of nodes on same lateral measured for lateral length Count 1006 108 16 x0.5 6.55
     1007 108 28 x0.5 6.56
  Internode length Length of 3rd internode from main bine, on same lateral measured for lateral length Centimetres 231 78 16 x0.5 17.41
     339 96 28 x0.5 26.86
  Height to the cones Height of bine from ground up to where bulk of cones began Metres 663 108 16 none 1.74
     588 108 28 none 1.75
Yield Green cone weight Fresh weight of cones per plant Grams 204 107 28 x0.5 1.02
Cone chemistry Cohumulone Cohumulone % dry weight 397 108 16 x0.5 2.71
     208 107 28 x0.5 2.50
  Humulone + adhumulone Humulone + adhumulone % dry weight 397 108 16 x0.5 6.41
     208 107 28 x0.5 5.34
  Colupulone Colupulone % dry weight 397 108 16 x0.5 2.31
     208 107 28 x0.5 2.51
  Lupulone + adlupulone Lupulone + adlupulone % dry weight 397 108 16 x0.5 2.16
     208 107 28 x0.5 2.17
  α-acid Cohumulone + humulone + adhumulone % dry weight 397 108 16 none 9.12
     208 107 28 x0.5 7.84
  β-acid Colupulone + lupulone + adlupulone % dry weight 397 108 16 x0.5 4.48
     208 107 28 x0.5 4.69
  Cohumulone (% of α-acid) Cohumulone/α-acid % dry weight 397 108 16 x0.5 0.30
     208 107 28 x0.5 0.32
  α-acid:β-acid α-acid/β-acid Ratio 397 108 16 x0.5 2.21
     208 107 28 x0.74 1.80
  α-acid:total resin α-acid/(α-acid + β-acid) Ratio 397 108 16 x0.5 0.67
     208 107 28 x0.5 0.62
  1. n individuals’ refers to the number of individuals assessed for each trait. 'n families’ refers to the number of families assessed for each trait. 'Age’ refers to the age of the plants at the time that a trait was assessed in number of months after the trial was planted. 'Transformation’ refers to the power transformation used to standardise the variance of each trait (x). 'Mean’ refers to the backtransformed mean of all assessed individuals for each trait.