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

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

Abbr.	Traits	Measurement standard	Unit
LAG	Leaf age	Number of leaves grown with time^a
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
LL^b	Leaf length	Length of the completely unfolded leaf from leaf basis to tip	cm
LW^c	Leaf width	Maximum width of the completely unfolded leaf	cm
LA^d	Leaf area	LA = (LL × LW) × 0.83	cm²

^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
^bThe leaf length was measured including the first leaf length (FILL), second leaf length (SELL), third leaf length (THLL) and fourth leaf length (FOLL)
^cThe leaf width was measured including the first leaf width (FILW), second leaf width (SELW), third leaf width (THLW) and fourth leaf width (FOLW)
^dThe leaf area was measured including the first leaf area (FILA), second leaf area (SELA), third leaf area (THLA) and fourth leaf area (FOLA)

ISSN: 2730-6844