Genetic dissection of stem WSC accumulation and remobilization in wheat (Triticum aestivum L.) under terminal drought stress

Table 2 Stable additive QTLs for stem WSC-related traits across water environments in the wheat RIL population

Trait	QTL	Flanking markers	Site (cM)	Environ.	a	R²(a)%
WSCf	Qwscf.acs-3B.1	Xpsp3112-Xgwm72	49.6	E1/E3	−3.55^*/− 3.48^*	6.96/8.09
	Qwscf.acs-4A	Xksum51-Xgwm637	75.7	E1/E3	4.07^*/3.77^*	9.14/9.58
	Qwscf.acs-7A.2	Xbarc195-Xbarc121	113.2	E2/E3	1.59^*/2.12^*	3.42/4.12
WSCg	Qwscg.acs-2D.1	Xgwm261-Xwmc112	3.5	E1/E2	−2.45^*/−3.45^*	3.92/4.62
	Qwscg.acs-4B.1	Xgwm495-Xgwm251	76.5	E2/E3	−3.55^*/−2.36^*	4.91/3.08
	Qwscg.acs-5A.1	Xmag694-Xgwm415	10.4	E2/E3	2.26^*/3.32^*	2.97/3.83
WSCm	Qwscm.acs-7A.2	Xbarc195-Xbarc121	113.2	E1/E3	2.29^*/2.80^*	3.48/8.94
WRRpr	Qwrrpr.acs-6B.2	Xwmc341-Xbarc198	69.4	E1/E3	1.68^/1.96^*	5.49/6.66
WRRps	Qwrrps.acs-4B.1	Xgwm495-Xgwm251	76.5	E1/E2	−1.50^*/−3.05^*	1.75/5.31
WRRps	Qwrrps.acs-5A.4	Xgwm443-Xcfa2155	98.8	E1/E3	−1.63^*/−1.25^*	0.97/0.89
WCRpr	Qwcrpr.acs-6B.1	Xcfd13-Xwmc737	5.8	E2/E3	0.43^*/0.50^*	4.92/5.76
WCRps	Qwcrps.acs-6B.1	Xwmc341-Xbarc198	69.4	E1/E2	−0.85^*/−0.99^*	5.81/5.32
GWMS	Qgwms.acs-2A	Xgwm122-Xmag2150	50.4	E1/E3	−0.01^*/− 0.01^*	5.15/4.75

WSC water-soluble carbohydrate concentration, WSCf WSC at the anthesis stage, WSCg WSC at the grain-filling stage, WSCg WSC at the grain-filling stage, WSCm WSC at the maturity stage, WRRpr pre-anthesis WSC remobilization rate, WRRps post-anthesis WSC remobilization rate, WCRpr pre-anthesis WSC contribution rate, WCRps post-anthesis WSC contribution rate, GWMS grain weight of main spike. Site (cM), the most likely position of the putative QTL on the specific chromosome. E1 to E3 represent field trials at Anning farm station, Gansu, China (103°51′E, 36°04′N, 1600 m ASL) in 2012–2013, at Yongdeng farm station, Gansu, China (103°18′E, 36°42′N, 1950 m ASL) in 2013–2014, and at Yuzhong farm station, Gansu, China (104°07′E, 35°51′N, 1900 m ASL) in 2014–2015, respectively. a, the additive effect, of which a positive value indicates the Longjian 19 allele having an increasing effect on the trait value and a negative value represents the Q9086 allele having a decreasing effect on the trait value. R²(a) (%), the proportion of phenotypic variations explained by additive QTL. ^**P < 0.005, ^***P < 0.001. Water environments (E1 to E3) marked by bold typeface indicated a QTL identified in the specific environment was also interacted significantly with drought stress

ISSN: 2730-6844