Identification of QTLs and candidate genes for physiological traits associated with drought tolerance in cotton

MAGWANGA, Richard Odongo; LU, Pu; KIRUNGU, Joy Nyangasi; CAI, Xiaoyan; ZHOU, Zhongli; AGONG, Stephen Gaya; WANG, Kunbo; LIU, Fang

doi:10.1186/s42397-020-0043-0

Journal of Cotton Research

Table 1 Analysis of variance of the BC₂F₂ population performance under drought the stress condition

From: Identification of QTLs and candidate genes for physiological traits associated with drought tolerance in cotton

		PH			FLW			RLWC			TFB			Chl/SPAD			SLW
Source	df	MS	F	Pr > F	MS	F	Pr > F	MS	F	Pr > F	MS	F	Pr > F	MS	F	Pr > F	MS	F	Pr > F
r^b	2	131.00	38.20	<0.000 1	0.00	0.33	0.72	0.04	5.08	0.01	0.09	0.62	0.54	1.41	0.69	0.50	0.01	3.72	0.02
e	1	10 100.00	2 940.00	<0.000 1	247.00	165 000.00	<0.000 1	4.33	604.00	<.000 1	31 600.00	227 000.00	<0.000 1	3 350.00	1 650.00	<0.000 1	572.00	385 000.00	<0.000 1
t	1	78.10	22.70	<0.000 1	0.02	12.90	0.00	6.11	853.00	<.000 1	3.47	24.90	<0.000 1	8 470.00	4 170.00	<0.000 1	30.10	20 200.00	<0.000 1
g	199	14.90	4.32	<0.000 1	0.05	34.90	<0.000 1	0.05	7.27	<.000 1	1.47	10.50	<0.000 1	29.20	14.40	<0.000 1	0.07	44.00	<0.000 1
e*t	1	155.00	45.00	<0.000 1	0.04	26.80	<0.000 1	13.50	1 880.00	<.000 1	0.93	6.67	0.01	378.00	186.00	<0.000 1	38.70	26 100.00	<0.000 1
e*g	199	8.36	2.43	<0.000 1	0.04	26.70	<0.000 1	0.05	7.39	<.000 1	0.92	6.57	<0.000 1	23.40	11.50	<0.000 1	0.04	29.80	<0.000 1
t*g	199	12.90	3.74	<0.000 1	0.05	30.10	<0.000 1	0.05	7.30	<.000 1	1.86	13.30	<0.000 1	21.00	10.30	<0.000 1	0.04	29.60	<0.000 1
gte	199	7.40	2.15	<0.000 1	0.04	28.00	<0.000 1	0.05	7.22	<.000 1	0.95	6.81	<0.000 1	20.60	10.10	<0.000 1	0.05	36.20	<0.000 1
Source	df	FSB/FRB			CMS			DLW			FRB			DSB			ELW
r^b	2	0.35	0.35	0.70	0.01	3.48	0.03	0.00	17.00	<0.000 1	0.02	0.63	0.53	0.01	1.94	0.14	0.01	9.23	0.00
e	1	24 800.00	24 600.00	<0.000 1	37.30	9 510.00	<0.000 1	1.42	34 100.00	<0.000 1	2 080.00	82 800.00	<0.000 1	1 150.00	224 000.00	<0.000 1	92.60	118 000.00	<0.000 1
t	1	0.14	0.14	0.71	0.00	0.09	0.77	0.02	492.00	<0.000 1	0.72	28.80	<0.000 1	0.57	112.00	<0.000 1	0.01	7.38	0.01
g	199	6.77	6.72	<0.000 1	0.01	2.21	<0.000 1	0.00	9.19	<0.000 1	0.04	1.52	<0.000 1	0.29	57.30	<0.000 1	0.02	31.30	<0.000 1
e*t	1	9.92	9.85	0.00	0.02	3.82	0.05	0.01	138.00	<0.000 1	1.58	62.80	<0.000 1	2.98	584.00	<0.000 1	0.01	6.38	<0.000 1
e*g	199	6.26	6.72	<0.000 1	0.01	2.54	<0.000 1	0.00	7.29	<0.000 1	0.04	1.41	0.00	0.25	49.70	<0.000 1	0.02	31.00	<0.000 1
t*g	199	7.38	7.33	<0.000 1	0.01	2.41	<0.000 1	0.00	9.66	<0.000 1	0.04	1.60	<0.000 1	0.32	62.10	<0.000 1	0.03	35.50	<0.000 1
gte	199	6.66	6.62	<0.000 1	0.01	2.48	<0.000 1	0.00	8.39	<0.000 1	0.04	1.43	0.00	0.29	57.10	<0.000 1	0.03	33.40	<0.000 1
Source	df	ELWL			DSB/DRB			TDB			DRB			FSB
r^b	2	0.42	1.42	0.24	0.09	0.07	0.94	0.01	1.19	0.31	0.00	0.51	0.60	0.04	0.31	0.74
e	1	5 060.00	17 000.00	<0.000 1	51 700.00	37 200.00	<0.000 1	1 770.00	289 000.00	<0.000 1	67.10	79 800.00	<.000 1	17 500.00	152 000.00	<0.000 1
t	1	0.38	1.28	0.26	376.00	271.00	<0.000 1	1.36	223.00	<0.000 1	0.17	203.00	<0.000 1	1.03	8.94	0.00
g	199	1.75	5.87	<0.000 1	18.80	13.50	<0.000 1	0.31	50.40	<0.000 1	0.01	9.02	<0.000 1	1.38	12.00	<0.000 1
e*t	1	0.13	0.45	<0.000 1	62.50	45.00	<0.000 1	4.68	764.00	<0.000 1	0.19	226.00	<0.000 1	0.08	0.74	0.39
e*g	199	1.73	5.80	<0.000 1	17.30	12.50	<0.000 1	0.27	44.50	<0.000 1	0.01	9.24	<0.000 1	0.83	7.25	<0.000 1
t*g	199	1.97	6.60	<0.000 1	17.50	12.60	<0.000 1	0.33	53.10	<0.000 1	0.01	7.49	<0.000 1	1.71	14.90	<0.000 1
gte	199	1.94	6.52	<0.000 1	20.50	14.70	<0.000 1	0.30	48.90	<0.000 1	0.01	7.96	<0.000 1	0.86	7.52	<0.000 1

r^b: replication/block; e: environment; t: treatment; g: genotype; e*t: environment-treatment interaction; e*g: environment-genotype interaction; *g: treatment-genotype interaction; g*t*e: genotype-treatment-environment interaction; PH: Plant height (cm), FLW: Fresh leaf weight(g), RLWC: Relative leaf water content (%), TFB: Total fresh biomass (g), ELW: Excised leaf weight (g), DRB: Dry root biomass (g), Chl: Chlorophyll content (mg/g.FW), SLW: Saturated leaf weight (g), FSB/FRB: Fresh shoot biomass-fresh root biomass ratio, DLW: Dry leaf weight (g), TDB: Total dry biomass (g), CMS: Cell membrane stability (%), FRB: Fresh root biomass (g), DSB: Dry shoot biomass (g), ELWL: Excised leaf water loss (%) and DSB/DRB: Dry shoot biomass-dry root biomass ratio

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