利用东乡普通野生稻染色体片段置换系定位产量相关性状QTL

doi:10.3724/SP.J.1006.2021.02054

Abstract

Abstract:

In former study, we constructed a chromosome segment substitution lines (CSSLs) of Dongxiang common wild rice (Oryza rufipogon Griff.) in the background of Nipponbare (Oryza sativa L.). In this study, in order to investigate 11 yield-related traits, such as tillering number, grains per panicle and grain shapes, the CSSLs were planted in Beijing, Linyi and Nanchang. The results of quantitative trait loci (QTLs) for yield-related traits showed that a total of 68 QTLs were detected, including 4 QTLs for plant height, 5 QTLs for panicle length, 2 QTLs for tillering number, 7 QTLs for primary branch grain number, 8 QTLs for primary branch grain number, 8 QTLs for secondary branch grain number, 10 QTLs for secondary branch grain number, 6 QTLs for grains per panicle, 7 QTLs for 1000-grain weight, 8 QTLs for grain length and 3 QTLs for grain width. LOD score of the detected QTLs ranged from 2.50 to 12.66. The phenotypic variation explained by these QTLs ranged from 4.67% to 27.79%. There were 15 QTLs with a contribution rate more than 15%, 24 QTLs overlapped with the reported loci or gene position, 44 QTLs newly detected loci. In addition, 6 QTLs were stably detected at two sites, and 1 QTL (qTGW2) as a novel QTL was detected at three sites. Finally, the reliability of the three QTLs of qPH7, qPBPP8-2 and qGW10 was verified by BSA. Our results will be helpful for the subsequent cloning of yield-related trait genes and further analysis of their genetic basis and molecular regulation mechanism.

Key words: common wild rice (Oryza rufipogon Griff.), chromosome segment substitution lines (CSSLs), yield-related traits, QTL analysis

LUO Lan, LEI Li-Xia, LIU Jin, ZHANG Rui-Hua, JIN Gui-Xiu, CUI Di, LI Mao-Mao, MA Xiao-Ding, ZHAO Zheng-Wu, HAN Long-Zhi. Mapping QTLs for yield-related traits using chromosome segment substitution lines of Dongxiang common wild rice (Oryza rufipogon Griff.) and Nipponbare (Oryza sativa L.)[J].Acta Agronomica Sinica, 2021, 47(7): 1391-1401.

Figures/Tables 5

Fig. 1

Table 1

Fig. 2

Table 2

QTL information of yield-related traits detected in the CSSLs in Beijing, Linyi, and Nanchang"

性状 Trait	位点 QTL	染色体 Chr.	标记名称 Marker	北京Beijing						南昌Nanchang
性状 Trait	位点 QTL	染色体 Chr.	标记名称 Marker	阈值 LOD value	贡献率 PVE (%)	加性效应 Additive	阈值 LOD value		贡献率 PVE (%)	加性效应 Additive	阈值 LOD value	贡献率 PVE (%)	加性效应 Additive
株高PH	qPH2	2	DX-C2-13	5.87	20.74	6.06					2.63	10.90	4.17
	qPH5	5	DX-C5-10				3.54		11.80	6.54
	qPH7	7	Indel-c7-1	2.93	9.86	5.91
	qPH8	8	DX-C8-12				2.80		8.99	5.52
穗长PL	qPL1	1	01-009	3.06	9.17	0.61
	qPL2-1	2	DX-C2-13	5.48	17.36	0.86
	qPL2-2	2	02-067				3.26		12.87	1.06	3.37	11.88	1.07
	qPL5	5	05-028								3.39	10.42	2.08
	qPL10	10	DX-S10-1	2.66	8.06	0.94
分蘖数TN	qTN1-1	1	DX-C1-2				3.03		10.96	-1.31
分蘖数TN	qTN1-2	1	010-060				3.89		13.32	-1.70
一次枝梗数PBPP	qPBPP1-1	1	DX-C1-6				2.77		9.25	1.03
	qPBPP1-2	1	DX-C1-10				2.68		8.34	2.33
	qPBPP3	3	DX-C3-8	3.08	9.86	-0.69
	qPBPP5	5	DX-C5-3	3.48	11.23	1.05
	qPBPP8-1	8	DX-C8-11									4.23	6.79	-1.41
	qPBPP8-2	8	DX-C8-12									7.98	13.99	1.36
一次枝梗数PBPP	qPBPP8-3	8	DX-S8-14	5.43	18.54	1.23
一次枝梗粒数PBGN	qPBGN1-1	1	DX-C1-3	3.00	9.85	4.05
	qPBGN1-2	1	DX-C1-10	3.74	12.29	-17.18
	qPBGN1-3	1	01-046					4.10		17.32	4.94
	qPBGN3	3	DX-C3-28	2.61	8.18	-5.57
	qPBGN8-1	8	DX-C8-11									4.70	7.45	-10.34
	qPBGN8-2	8	DX-C8-12									9.27	16.35	10.25
	qPBGN8-3	8	DX-S8-14	2.90	9.33	6.36
	qPBGN11	11	DX-S11-10	3.11	9.86	6.12
二次枝梗数SBPP	qSBPP1	1	DX-C1-7					3.26		8.86	3.50
	qSBPP2-1	2	DX-C2-1					5.52		15.83	10.49
	qSBPP2-2	2	DX-C2-2	9.46	23.99	7.76
	qSBPP2-3	2	02-057	5.26	12.01	2.71
	qSBPP4-1	4	DX-C4-12	3.68	8.10	-1.51
	qSBPP4-2	4	S4-12-2					5.50		15.75	-5.73
	qSBPP6-1	6	DX-C6-2									3.17	13.08	2.93
二次枝梗数SBPP	qSBPP6-2	6	S6-9-1	3.09	6.71	2.27
二次枝梗粒数SBGN	qSBGN2-1	2	DX-C2-1					12.66		27.79	56.08
	qSBGN2-2	2	DX-C2-2	8.56	21.39	20.58
	qSBGN2-3	2	02-057	4.33	9.79	6.87
	qSBGN3-1	3	DX-S3-16					3.90		6.99	20.08
	qSBGN3-2	3	DX-S3-17									4.03	15.34	17.26
	qSBGN4-1	4	DX-C4-2					4.93		9.03	-15.61
	qSBGN4-2	4	DX-C4-8					2.68		4.67	-11.22
	qSBGN4-3	4	DX-C4-12	4.64	10.55	-4.84
	qSBGN6-1	6	DX-C6-2									2.85	10.56	9.59
	qSBGN6-2	6	S6-9-1	4.21	9.47	7.58
每穗粒数GPP	qGPP1	1	01-046					4.39		13.92	14.35
	qGPP2	2	DX-C2-1					4.02		14.43	37.54
	qGPP4	4	S4-12-2					3.55		12.58	-19.21
	qGPP6-1	6	06-013									3.26	13.45	20.53
	qGPP6-2	6	06-037	5.14	17.43	14.15
	qGPP11	11	DX-S11-10	3.08	9.96	10.70
千粒重TGW	qTGW2	2	02-008	4.39	14.36	-2.79		3.26		9.19	-1.98	4.21	10.96	-2.56
	qTGW3	3	DX-C3-1	3.27	10.64	1.31
	qTGW8-1	8	DX-C8-3					4.07		11.68	-3.14
	qTGW8-2	8	DX-S8-14					3.02		8.54	-1.12	3.07	7.86	-1.27
	qTGW9-1	9	DX-C9-4					2.90		8.12	1.33
	qTGW9-2	9	DX-C9-10									3.02	7.81	-2.15
	qTGW12	12	S12-6-3									5.28	14.11	-2.38
粒长GL	qGL1	1	DX-C1-18	5.29	16.65	0.42
粒长GL	qGL2	2	02-067					3.13		10.71	0.13	2.86	7.12	0.15
	qGL3-1	3	DX-C3-8					3.89		13.44	0.17
	qGL3-2	3	indel-c3-12	3.08	9.22	0.12
	qGL3-3	3	DX-S3-17									5.75	15.14	0.37
	qGL3-4	3	DX-C3-23	4.78	14.90	0.17						5.69	14.95	0.25
	qGL4	4	S4-12-2					3.14		10.68	0.18
	qGL10	10	DX-C10-8									3.55	8.88	0.20
粒宽GW	qGW3	3	DX-S3-17									2.50	10.06	-0.11
	qGW8	8	DX-C8-15	4.59	17.86	-0.07		3.53		14.49	-0.07
	qGW10	10	DX-C10-10									2.56	10.33	-0.08

Table 2

Fig. 3

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性状 Trait	北京Beijing				临沂Linyi				南昌Nanchang
性状 Trait	日本晴 Nip	平均值±标准差 Mean±SD	变异系数 CV (%)	幅度 Range	日本晴 Nip	平均值±标准差 Mean±SD	变异系数 CV (%)	幅度 Range	日本晴 Nip	平均值±标准差 Mean±SD	变异系数 CV (%)	幅度 Range
株高 PH (cm)	96.30	108.02±10.07	9.33	87.75-133.75	94.64	103.34±10.95	10.59	80.30-134.82	95.00	100.31±9.76	9.73	70.20-130.00
穗长 PL (cm)	19.68	19.97±1.53	7.68	15.07-24.94	21.59	22.29±2.03	9.10	16.64-26.96	21.74	22.32±2.01	9.01	17.78-28.03
分蘖数 TN	13.00	14.30±2.14	14.96	8.80-20.00	17.21	16.24±2.89	17.78	9.00-24.17	13.60	11.83±1.58	13.38	7.80-15.40
一次枝梗数 PBPP	10.23	10.72±1.42	13.27	7.17-15.17	10.69	10.99±1.56	14.18	8.42-19.67	9.63	10.52±1.50	14.27	6.38-15.75
一次枝梗粒数PBGN	63.42	62.50±11.28	18.04	30.50-00.17	60.60	61.79±8.65	14.00	42.50-84.83	57.38	62.79±10.57	16.84	35.38-111.75
二次枝梗数 SBPP	15.17	12.65±4.25	33.61	5.08-29.75	21.38	20.85±7.13	34.20	6.42-63.00	17.13	18.60±5.21	27.99	9.00-43.75
二次枝梗粒数 SBGN	41.79	33.97±12.04	35.46	11.08-75.17	63.02	59.58±24.91	41.80	13.92-208.17	45.75	53.05±19.48	36.72	20.75-181.63
每穗粒数 GPP	105.21	96.46±16.51	17.11	57.58-156.67	123.63	121.37±30.55	25.17	62.67-288.25	103.13	115.84±24.04	20.75	77.50-258.63
千粒重 TGW (g)	23.81	23.21±1.92	8.28	17.95-28.30	26.58	25.81±1.76	6.82	19.71-30.01	25.68	24.51±2.03	8.26	16.39-28.87
粒长 GL (mm)	6.60	6.74±0.29	4.36	6.21-7.57	6.94	7.04±0.29	4.17	6.34-7.89	6.93	7.07±0.40	5.66	6.27-8.85
粒宽 GW (mm)	3.20	3.22±0.10	3.09	2.92-3.44	3.39	3.34±0.11	3.34	2.97-3.60	3.37	3.31±0.15	4.64	2.49-3.60

Mapping QTLs for yield-related traits using chromosome segment substitution lines of Dongxiang common wild rice (Oryza rufipogon Griff.) and Nipponbare (Oryza sativa L.)

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