Quantitative trait loci (QTLs) for stress resistance (updated March 10, 2008)

Select trait:

· Specific root and shoot responses under drought (see also 'whole plant' below)

· Osmotic adjustment

· Whole plant and crop drought resistance

· Hormonal responses under drought

· Water-use and photosynthetic activity under drought

· Cellular membrane stability (CMS)

· Flooding/waterlogging/submergence tolerance

· Salinity tolerance

· Cold tolerance

· Heat tolerance

· Stay-green (non-senescence)

· Mineral deficiency tolerance

· Mineral toxicity resistance

Specific root and shoot responses under drought (see also 'whole plant' below) Back to Top

Trait	Species	Population	Type *	QTL#	Reference	I.D. **
Carbon isotope discrimination (WUE)	Arabidopsis			5	Juenger et al. 2005	7767
Root size	Barley	Derkado x B83-12/21/5	DHL	Many	Chloupek et al. 2006	8262
Various regulatory candidate genes	Barley	Several		13	Tondelli et al. 2006	8189
Various physiological traits	cotton	G.hirsutum x G.barbadense		33	Saranga et al. 2004	7016
Root architecture and water acquisition	Lettuce	Salians X UC92G489	F2	13	Johnson et al. 2000	5041
Roots traits and yield	Maize	Lo964 x Lo1016	F3	<11	Tuberosa et al. 2002	5902
Leaf elongation rate in correspondence with ASI	Maize	Ac7643 and Ac7729/TZSR	RIL	5	Welcker et al., 2007	8701
Root length (constitutive)	Rice	Kalinga III x Azucena	NILS	1	Steele et al. 2006	8097
Root length, number, thickness, penetration index	Rice	IR58821 X IR52561	RIL	28	Ali et al. 2000	4998
Root morphology and root distribution	Rice	IR64 X Azucena	DHL	39	Yadav et al. 1997	3482
Root morphology, root cell length	Rice	Azucena X Bala	F2	24	Price and Tomos 1997	3558
Root thickness, root penetration index	Rice	CT9993 X IR62266	DHL	5	Zhang et al. 2001	5456
Root thickness, root penetration index	Rice	IR64 X Azucena	DHL	12	Zheng et al. 2000	5629
Root traits	Rice	CT9993 X IR62266	DHL*	8	Kamoshita et al. 2002	5780
Root traits	Rice	IR1552 x Azucena	RIL		Zheng et al. 2003	6890
shoot biomass, deep root morphology, root thickness	Rice	IR58821/IR52561	RIL	< 12	Kamoshita et al. 2002	5998
Tiller and root number, thickness, dry weight	Rice	CO39 X Moroberekan	RIL*	18	Champoux et al. 1995	3070
Tiller and root number, penetration ability	Rice	CO39 X Moroberekan	RIL	39	Ray et al. 1996	5623
Tiller, total and penetrated root number, ratio	Rice	Azucena X Bala	RIL	18	Price et al. 2000	4599
Various root growth traits	Rice	Azucena X Bala	RIL	<24	Price et al. 2002	6078
Yield and root traits under limited water	Rice	IR64/Azucena	DHL		Venuprasad et al. 2002	6264
Growth and development under PEG stress in Hydroponics	Rice	Zhenshan 97 x Minghui 63	RIL	14	Cui et al., 2008	9158

Osmotic adjustment Back to Top

Trait	Species	Population	Type *	QTL#	Reference	I.D. **
Osmotic adjustment under drought	Barley	Tadmor X Er/Amp	RIL	12	Teulat et al. 1998	3729
Osmotic adjustment and dehydration tolerance	Rice	CO39 X Moroberekan	RIL	1	Lilly et al. 1996	3346
Osmotic adjustment under drought	Rice	CT9993 X IR62266	DHL	5	Zhang et al. 2001	5456
Osmoregulation under drought	Sunflower	‘PAC2’ X ‘RHA266’	RIL	1 major + 4	Kiani et al., 2007	8737
Osmoregulation under drought	Wheat	Songlen X Cobdor*4/3Ag14	RIL	1	Morgan and Tam 1996	3395

Whole plant and crop drought resistance Back to Top

Trait	Species	Population	Type *	QTL#	Reference	I.D. **
Rainfed field performance in several locations	Barley	Barke x HOR11508 (H.Spontaneum)	DH	80	Talamè et al., 2004	7208
Relative water content	Barley		RIL	9	Teulat et al., 2003	6891
Seedling desiccation tolerance	Barley	Mona x H. spontaneum	F4	7	Zhang et al. 2005	7594
Flowering parameters under drought, ASI	Maize	Ac7643S5 X Ac7729/TZSRWS5	F2	7	Ribaut et al. 1996	3306
Plant height, ear number, days to silking, yield	Maize	SD34 X SD35