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

Table 1 Summary statistics of stem WSC-related traits in the parents and the wheat RIL population under drought-stressed (DS) and well-watered (WW) conditions across different environments

Trait	Water regime	Parents		RILs
Trait	Water regime	Longjian19	Q9086	Mean	Min.	Max.	CV (%)	Skew.	Kurt.	h²_B
WSCf (mg.g^− 1 DW)	DS	127.33	113.80^*	115.34^*	51.39	175.32	21.11^*	−0.25	− 0.17	0.54
WSCf (mg.g^− 1 DW)	WW	102.49	87.06^*	98.42	42.43	172.17	18.86	0.13	0.36	0.63
WSCg (mg.g⁻¹ DW)	DS	185.38	157.84^*	168.73^*	71.36	257.92	17.78	−0.36	0.28	0.69
WSCg (mg.g⁻¹ DW)	WW	151.06	110.59^**	148.55	81.82	254.85	16.81	0.35	0.73	0.72
WSCm (mg.g⁻¹ DW)	DS	34.17	43.82^**	40.53^**	7.32	95.90	33.26^**	0.79	0.88	0.70
WSCm (mg.g⁻¹ DW)	WW	73.56	104.53^**	80.65	19.81	148.94	24.13	0.32	0.02	0.55
WRRpr (%)	DS	69.29	54.46^**	64.78^**	32.63	90.36	13.93^**	−0.60	0.28	0.57
WRRpr (%)	WW	19.04	13.39^**	18.47	0.92	75.41	48.46	0.70	1.50	0.59
WRRps (%)	DS	31.38	24.52^**	25.00^**	3.65	71.75	38.78^**	0.33	0.11	0.51
WRRps (%)	WW	44.75	31.71^**	42.68	1.92	73.53	30.61	0.15	−0.22	0.64
WCRpr (%)	DS	16.40	9.54^**	15.11^**	3.65	27.92	35.92^**	0.29	−0.67	0.60
WCRpr (%)	WW	6.24	2.38^**	3.48	0.18	14.78	58.68	0.98	1.40	0.61
WCRps (%)	DS	8.42	4.51^**	5.70^**	0.75	27.98	51.37^**	0.57	−0.23	0.54
WCRps (%)	WW	17.73	8.74^**	8.93	0.21	26.25	29.27	0.58	−0.49	0.61
GWMS (g)	DS	1.05	0.89^*	0.98^**	0.48	1.52	18.92^**	0.05	−0.40	0.73
GWMS (g)	WW	1.43	1.18^*	1.31	0.83	1.71	11.87	0.12	−0.27	0.65

The phenotypic data for each trait is the mean averaged across three experimental sites under drought-stressed (DS) and well-watered (WW) conditions at Anning farm station, Gansu, China (103°51′E, 36°04′N, 1600 m ASL) in 2012–2013 (E1), at Yongdeng farm station, Gansu, China (103°18′E, 36°42′N, 1950 m ASL) in 2013–2014 (E2), and at Yuzhong farm station, Gansu, China (104°07′E, 35°51′N, 1900 m ASL) in 2014–2015 (E3). The asterisks in the column of “parent Q9086” represent significant differences in phenotypic data between two parents by the F test. The asterisks in the columns of “mean” and “CV (%)” represent significant differences in phenotypic data between two water conditions by the F test. ^*P < 0.05, ^**P < 0.01. 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, Min minimum, Max maximum, CV coefficient of variation, Skew skewness, Kurt kurtosis, h²_B broad-sense heritability

ISSN: 2730-6844