Estimation of Leaf Water Use Efficiency Threshold Values for Water Stress in Winter Wheat (Triticum aestivum L.)
Table 1
Crop evapotranspiration, grain yield, and water use efficiency of winter wheat under well-watered control conditions and light, moderate, and severe drought stress at different key growth stages during the 2012–2013 and 2013–2014 growing seasons.
Treatments
Grain yield (kg ha–1)
Crop evapotranspiration (mm)
Water use efficiency (kg m–3)
2012–2013
2013–2014
2012–2013
2013–2014
2012–2013
2013–2014
T1 (CK)
7545a
8023a
569.8a
531.1ab
1.33abc
1.51ab
T2
7318a
7682a
569.2a
539.8ab
1.29bc
1.42bc
T3
7318a
7886a
541.7ab
484.5bc
1.36abc
1.64a
T4
7227ab
5886e
490.7bcde
421.6d
1.48ab
1.40bcd
T5
7091ab
7023b
513.8abcd
510.8ab
1.38abc
1.38bcde
T6
6818abc
5864e
526.6abcd
526.6ab
1.30bc
1.11fghi
T7
6909ab
5114f
470.1defg
515.4ab
1.48ab
0.99i
T8
6818abc
6614bcd
530.8abc
559.7a
1.28bc
1.19efgh
T9
6818abc
6205cde
518abcd
517.3ab
1.32abc
1.21efgh
T10
6045cd
6227cde
473.9cdef
512.4ab
1.28bc
1.22fefg
T11
6727abc
6795bc
514.3abcd
532.4ab
1.30bc
1.29cdef
T12
6091cd
6023de
512.1bcd
447.8cd
1.19c
1.35bcde
T13
5364d
4636fg
415.8g
423.6d
1.29bc
1.09ghi
T14
6455bc
4614fg
418.2g
452.3cd
1.54a
1.02hi
T15
5500d
4000g
426.6fg
493.9bc
1.29bc
0.81j
T16
6455bc
6000de
438.9efg
491.7bc
1.47ab
1.22defg
Note: treatment means followed by the different letters are significantly different at .
