Table 2. Summary of all experiments analyzed in this study.
| Expt | Location | Year/Season | Environment | Description | Treatment | Root sampling (DAS) | Grain yield | RDW | %DR | MRL | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Field studies | |||||||||||
| 1 | Af12FC | Ibadan, Nigeria | 2012 Jan-Jul | field | transplanted lowland | well-watered control (aerobic) | √ | ||||
| 2 | Af12FS | Ibadan, Nigeria | 2012 Jan-Jul | field | transplanted lowland | drought stress (aerobic) | √ | ||||
| 3 | Ba10FC | Maharajpet, Andhra Pradesh, India | 2010 Jun-Nov (wet season) | field | transplanted lowland | flooded control | √ | ||||
| 4 | Ba10FS | Maharajpet, Andhra Pradesh, India | 2010 Jun-Nov (wet season) | field | transplanted lowland | drought stress (initially flooded) | √ | ||||
| 5 | IR08FLC | Los Baños, Laguna, Philippines | 2008 Jan-Apr (dry season) | field | transplanted lowland | flooded control | 72 | √ | √ | √ | |
| 6 | IR08FLS | Los Baños, Laguna, Philippines | 2008 Jan-Apr (dry season) | field | transplanted lowland | drought stress (initially flooded) | 72 | √ | √ | √ | |
| 7 | IR09dFLC | Los Baños, Laguna, Philippines | 2009 Jan-Apr (dry season) | field | transplanted lowland | flooded control | √ | ||||
| 8 | IR09dFLS | Los Baños, Laguna, Philippines | 2009 Jan-Apr (dry season) | field | transplanted lowland | drought stress (initially flooded) | 92 | √ | √ | ||
| 9 | IR09wFLC | Los Baños, Laguna, Philippines | 2009 Jul-Oct (wet season) | field | transplanted lowland | flooded control | √ | ||||
| 10 | IR09wFLS | Los Baños, Laguna, Philippines | 2009 Jul-Oct (wet season) | field | transplanted lowland | drought stress (initially flooded) | √ | ||||
| 11 | IR10FLC | Los Baños, Laguna, Philippines | 2010 Jan-Apr (dry season) | field | transplanted lowland | flooded control | √ | ||||
| 12 | IR10FLS | Los Baños, Laguna, Philippines | 2010 Jan-Apr (dry season) | field | transplanted lowland | drought stress (initially flooded) | √ | ||||
| 13 | IR10UFC | Los Baños, Laguna, Philippines | 2010 Jan-Apr (dry season) | field | direct-seeded upland | well-watered control (aerobic) | √ | ||||
| 14 | IR12FLS | Los Baños, Laguna, Philippines | 2012 Jul-Oct (wet season) | field | transplanted lowland | flooded control | √ | ||||
| 15 | IR12FLC | Los Baños, Laguna, Philippines | 2012 Jul-Oct (wet season) | field | transplanted lowland | drought stress (initially flooded) | √ | ||||
| 16 | Na10FINT | Nagoya, Japan | 2010 (May-Oct) | fixed rainout shelter | transplanted, line source | int. drought stress (aerobic) | 134–150 | √ | √ | ||
| 17 | Na10FWD | Nagoya, Japan | 2010 (May-Oct) | fixed rainout shelter | transplanted, line source | severe drought stress (aerobic) | 134–150 | √ | √ | ||
| 18 | Na10FWW | Nagoya, Japan | 2010 (May-Oct) | fixed rainout shelter | transplanted, line source | well-watered control (aerobic) | 134–150 | √ | √ | ||
| 19 | Na11FINT | Nagoya, Japan | 2011 (May-Sep) | fixed rainout shelter | transplanted, line source | int. drought stress (aerobic) | 90–113 | √ | √ | ||
| 20 | Na11FWD | Nagoya, Japan | 2011 (May-Sep) | fixed rainout shelter | transplanted, line source | severe drought stress (aerobic) | 90–113 | √ | √ | ||
| 21 | Na11FWW | Nagoya, Japan | 2011 (May-Sep) | fixed rainout shelter | transplanted, line source | well-watered control (aerobic) | 90–113 | √ | √ | ||
| 22 | TN10FC | Paramakudi, Tamil Nadu, India | 2010–2011 Sep-Jan (wet season) | field | lowland (flooded) | flooded control | 115 | √ | √ | √ | |
| 23 | TN10FS | Paramakudi, Tamil Nadu, India | 2010–2011 Sep-Jan (wet season) | field | lowland (initially flooded) | drought stress (initially flooded) | 113 | √ | √ | √ | |
| 24 | TN11FC | Paramakudi, Tamil Nadu, India | 2011–2012 Sep-Jan (wet season) | field | lowland (flooded) | flooded control | 125 | √ | √ | √ | √ |
| 25 | TN11FS | Paramakudi, Tamil Nadu, India | 2011–2012 Sep-Jan (wet season) | field | lowland (initially flooded) | drought stress (initially flooded) | 130 | √ | √ | √ | √ |
| Container studies | |||||||||||
| 1 | Ab09CH | Aberdeen, UK | 2009 Mar | growth chamber | 38-L (58 cm x 38.5 cm x 26 cm) aerated hydroponic tank, 36 plants per tank | n/a | 35 | √ | √ | √ | |
| 2 | Ab09CNW | Aberdeen, UK | 2009 Mar-Sep | growth chamber | 0.5-L (8 x 8 cm at top, 5.5 x 5.5 cm at bottom, 12.3 cm deep) soil-filled pot, covered at the bottom with non-woven fabric (aerobic) | n/a | 38 | √ | √ | ||
| 3 | Ab09CR | Aberdeen, UK | 2009–2010 Jun-Jan | greenhouse | 5.4-L (30 cm x 1.5 cm x 120 cm) soil-filled rhizotron (aerobic) | n/a | 42 | √ | √ | ||
| 4 | Ba10CC | Maharajpet, Andhra Pradesh, India | 2010 Jul-Oct | outdoor | 60-L (25 cm x 120 cm) soil-filled cylinders (aerobic) | well-watered control | 100 | √ | √ | ||
| 5 | Ba10CS | Maharajpet, Andhra Pradesh, India | 2010 Jul-Oct | drought stress | 100 | √ | √ | ||||
| 6 | CS09CC | Wagga Wagga, NSW, Australia | 2009 Oct–Nov | greenhouse | 15-L (20 cm x 50 cm) soil-filled cylinders (all initially flooded) | well-watered control | 42 | √ | √ | ||
| 7 | CS10CS1 | Wagga Wagga, NSW, Australia | 2010 Feb-Mar | drought stress (intermediate) | 42 | √ | √ | ||||
| 8 | CS10CS2 | Wagga Wagga, NSW, Australia | 2010 Apr-May | drought stress (severe) | 42 | √ | √ | ||||
| 9 | IC09CC | Patencheru, Andhra Pradesh, India | 2009 Jan-Apr (dry season) | outdoor rainout shelter | 37-L (20 cm x 120 cm) soil-filled cylinders (all initially flooded) | well-watered control | 96 | √ | |||
| 10 | IC09CS | Patencheru, Andhra Pradesh, India | 2009 Jan-Apr (dry season) | drought stress | 96 | √ | |||||
| 11 | IR08CC | Los Baños, Laguna, Philippines | 2008 Sep-Dec (wet season) | greenhouse | 29-L (19 cm x 105 cm) soil-filled cylinders (all initially flooded) | well-watered control | 74 | √ | √ | √ | |
| 12 | IR08CS | Los Baños, Laguna, Philippines | 2008 Sep-Dec (wet season) | drought stress | 74 | √ | √ | √ | |||
Experiment names include the first two letters of the institute where the experiment was conducted, the year in which the experiment was conducted, letters indicating the type of study (F (field) or C (container)), the season (w (wet season) or d (dry season)), system (L (lowland), U (upland), H (hydroponics), NW (non-woven fabric), or R (rhizotron)), and a letter for the treatment (C (control), S (stress), INT (intermediate stress), WD (water deficit), or WW (well-watered). DAS = days after sowing.