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Table 6 List of 21 quantitative traits investigated in the hydroponic experiment

From: Detection of QTLs for seedling characteristics in barley (Hordeum vulgare L.) grown under hydroponic culture condition

Abbr. Traits Measurement standard Unit
LAG Leaf age Number of leaves grown with timea  
SH Shoot height Length of the seedling from basis to the tip of the longest leaf blade cm
MRL Maximum root length Length of the longest root from crown to root tip cm
MRN Main root number Number of primary root  
SFW Seedling fresh weight Seedling weight after dry surface water g
SLFW Stem-and-leaf fresh weight Stem-and-leaf weight after dry surface water g
RFW Root fresh weight Root weight after dry surface water g
SLDW Stem-and-leaf dry weight Stem-and-leaf weight after 2 days of drying at 75 °C g
RDW Root dry weight Root weight after 2 days of drying at 75 °C g
LLb Leaf length Length of the completely unfolded leaf from leaf basis to tip cm
LWc Leaf width Maximum width of the completely unfolded leaf cm
LAd Leaf area LA = (LL × LW) × 0.83 cm2
  1. aThe roll-leaf length measurement standard is, if the length of roll-leaf less than 1/3 the length of next leaf was recorded as 0.1, between 1/3 and 1/2 the length of next leaf was recorded as 0.3, between 1/2 and 3/4 the length of next leaf was recorded as 0.5, between 3/4 and the length of next leaf was recorded as 0.7, longer than the length of next leaf was recorded as 0.9
  2. bThe leaf length was measured including the first leaf length (FILL), second leaf length (SELL), third leaf length (THLL) and fourth leaf length (FOLL)
  3. cThe leaf width was measured including the first leaf width (FILW), second leaf width (SELW), third leaf width (THLW) and fourth leaf width (FOLW)
  4. dThe leaf area was measured including the first leaf area (FILA), second leaf area (SELA), third leaf area (THLA) and fourth leaf area (FOLA)