Table 3.

Quantitative trait loci (QTLs) mapped for drought signaling molecules in wheat.

Chromosome location	Function	Reference
MAPMAKER QTL; 5A	Located between Xpsr575-Xpsr426, ABA production	Quarrie et al., 1994
2A	ABA production, smaller leaf size, homoeolog of wheat gene Vrn1 that controls number of tillers and ABA accumulation	Quarrie et al., 1997
7A	Activated on exogenous ABA application, involved in ABA signaling	Quarrie et al., 2007
3Am, 4Am, 5Am	QTLs for ABA signaling genes (TmABF, TmVP1, TmERA1, and TmABI8)	Nakamura et al., 2007
6A	Located at Xgwm459 and gwm334a region, activated by exogenous ABA, salicylic acid (SA), jasmonic acid (JA), and ethylene application, contains signaling genes	Castro et al., 2008
1B, 2A, 3A, 6D, 7B	ABA responsiveness, regulate expression of ABA responsive LEA protein coding genes, i.e., Wrab15, Wdhn13, and Wrab17	Kobayashi et al., 2010
MAPMAKER QTL; 5A	Linked to Dhn1/Dhn2 genes, early flowering based drought tolerance	Ibrahim et al., 2012
6D	ABA production and signaling, seed dormancy, regulation of LEA proteins	Iehisa et al., 2014
3A, 1B, 4A, 5A, 5D, 7B	Enhanced ABA production, located at marker locations of Wmc96, Trap9, and Barc164	Barakat et al., 2015