水稻核不育系柱头性状的主基因+多基因遗传分析

doi:10.3724/SP.J.1006.2021.02057

Abstract

Abstract:

Rice stigma traits are important traits that affects the yield of male sterile lines and hybrid rice seed production. To provide genetic information for the creation of thermo-sensitive genic male sterile lines with long stigmas and high exsertion rates in rice, we investigated the correlation among four stigma traits of 7001S (japonica photoperiod-thermo-sensitive genic male sterile line with short stigma length and low exsertion rate, P₁), Zitai S (indica thermo-sensitive genic male sterile line with long stigma length and high exsertion rate, P₂), and F₁, F₂ (350 lines), and F_2:3 (320 lines) from the cross P₁ × P₂. Coefficients of linear correlation in stigma traits were calculated, and genetic patterns were analyzed by mixed major-gene plus polygene inheritance models. The results showed that there were extremely significant linear positive correlations among four stigma traits. The correlation coefficients were between 0.262 and 0.895. Genetic analysis revealed that stigma length (STL), style length (SYL), the sum of stigma, and style length (TSSL) were controlled by two major genes plus polygenes. The two major genes expressed additive-dominant-epistatic effects, but they expressed equal additive effects and equal dominant effects of TSSL in F₂ population. The epistatic effect was dominant in STL, SYL, and TSSL in F₂ and F_2:3. Percentage of exserted stigma (PES) was controlled by two major genes plus polygenes with additive-dominant-epistatic effect in F₂. However, PES was controlled by one major gene with additive-dominant effect plus polygenes in F_2:3. The additive effect was dominant of PES in F₂ and F_2:3. Four stigma traits were mainly governed by major genes.

Key words: rice (Oryza sativa L.), genic male sterile line, stigma trait, major gene plus polygene model, genetic analysis

JIANG Jian-Hua, ZHANG Wu-Han, DANG Xiao-Jing, RONG Hui, YE Qin, HU Chang-Min, ZHANG Ying, HE Qiang, WANG De-Zheng. Genetic analysis of stigma traits with genic male sterile line by mixture model of major gene plus polygene in rice (Oryza sativa L.)[J].Acta Agronomica Sinica, 2021, 47(7): 1215-1227.

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性状 Trait	环境 Environment	亲本Parent		F₁	F₂/F_2:3群体 F₂/F_2:3 population
性状 Trait	环境 Environment	7001S	紫泰S Zitai S	F₁	变幅 Range	均值 ± 标准差 Mean ± SD	变异系数CV (%)	遗传力 H² (%)	偏度值Skewness	峰度值 Kurtosis
柱头长度 STL	E1	0.867	1.808	1.438	0.993-2.079	1.468 ± 0.226	15.40	78.71	0.088	-0.467
柱头长度 STL	E2	0.915	1.737	1.303	0.752-1.880	1.180 ± 0.221	18.71	86.09	0.807	0.334
花柱长度 SYL	E1	0.780	1.134	0.825	0.441-1.402	0.793 ± 0.162	20.43	93.44	0.559	0.138
花柱长度 SYL	E2	0.721	1.207	0.953	0.554-1.399	0.862 ± 0.170	19.78	95.30	0.853	0.298
柱花总长度 TSSL	E1	1.648	2.941	2.263	1.524-3.116	2.261 ± 0.323	14.29	86.42	0.055	-0.269
柱花总长度 TSSL	E2	1.636	2.943	2.256	1.464-3.100	2.042 ± 0.337	16.49	96.72	0.202	0.169
柱头外露率 PES	E1	19.60	63.33	48.35	2.16-79.59	31.73 ± 17.43	54.94	80.23	0.547	-0.178
柱头外露率 PES	E2	14.82	58.09	43.32	2.83-74.34	35.85 ± 16.33	45.55	90.16	0.143	-0.792

性状 Trait	变异来源 Source of variation	自由度 DF	平方和 SS	均方 MS	F值 F-value	F_0.05	F_0.01
柱头长度 STL (mm)	基因型间Genotypes	2	12.44	6.22	833.66^**	3.10	4.85
柱头长度 STL (mm)	环境间Environments	1	0.07	0.07	8.98^**	3.95	6.93
	基因型×环境互作Genotype × Environment	2	0.14	0.07	9.22^**	3.10	4.85
花柱长度 SYL (mm)	基因型间Genotypes	2	2.92	1.46	727.96^**	3.10	4.85
花柱长度 SYL (mm)	环境间Environments	1	0.05	0.05	26.65^**	3.95	6.93
	基因型×环境互作Genotype × Environment	2	0.15	0.07	36.98^**	3.10	4.85
柱花总长度 TSSL (mm)	基因型间Genotypes	2	27.06	13.53	1512.51^**	3.10	4.85
柱花总长度 TSSL (mm)	环境间Environments	1	0	0	0.08	3.95	6.93
	基因型×环境互作Genotype × Environment	2	0	0	0.04	3.10	4.85
柱头外露率 PES (%)	基因型间Genotypes	2	19,545.70	9772.85	265.44^**	3.17	5.03
柱头外露率 PES (%)	环境间Environments	1	377.86	377.86	10.26^**	4.02	7.13
	基因型×环境互作Genotype × Environment	2	0.52	0.26	0.01	3.17	5.03

性状 Trait	环境 Env.	世代 Generation	备选模型 Candidate model	极大对数似然函数值 Max. log likelihood value	AIC值 AIC value	适合性检验^a Test of goodness-of-fit ^a
柱头长度 STL	E1	F₂	MX1-AD-ADI	69.20	-122.40	0/0/2/0/0
			MX2-ADI-ADI	72.90	-121.90	0/0/2/0/0
			MX2-ADI-AD	72.70	-127.50	0/0/2/0/0
			MX2-AD-AD	66.60	-123.20	0/1/1/1/1
	E2	F_2:3	PG-ADI	227.00	-442.00	0/0/1/1/0
			MX1-AD-ADI	236.50	-457.00	0/0/1/0/0
			MX2-ADI-ADI	238.60	-453.10	0/0/1/1/0
			MX2-ADI-AD	238.40	-458.80	0/0/1/0/0
花柱长度 SYL	E1	F₂	2MG-ADI	118.90	-217.80	1/1/1/2/0
			MX1-AD-ADI	118.40	-222.80	0/0/1/0/0
			MX2-ADI-AD	121.70	-217.40	0/0/1/0/0
			MX2-AD-AD	106.20	-194.40	3/2/2/3/0
	E2	F_2:3	2MG-ADI	220.90	-421.90	0/0/2/0/0
			2MG-AD	210.90	-409.80	2/2/2/2/0
			MX1-AD-ADI	220.80	-427.60	0/0/1/0/0
			MX2-ADI-AD	219.10	-412.20	0/0/0/0/0
柱花总长度 TSSL	E1	F₂	MX2-AD-AD	-60.20	130.39	0/0/1/0/0
			MX2-A-AD	-62.25	130.50	0/0/1/0/0
			MX2-EAED-AD	-64.11	132.22	0/0/1/0/0
			MX2-EEAD-AD	-65.47	134.94	0/0/1/0/0
	E2	F_2:3	2MG-ADI	18.46	-16.92	0/0/0/1/0
			MX1-AD-ADI	9.54	-5.08	0/0/0/0/0
			MX2-ADI-AD	5.01	15.98	0/0/0/0/0
			MX2-EAED-AD	-3.10	18.20	3/3/1/3/0
柱头外露率 PES	E1	F₂	2MG-ADI	-1627.49	3276.98	1/1/0/1/0
			MX1-AD-ADI	-1631.22	3278.44	0/0/0/0/0
			MX2-ADI-ADI	-1620.71	3265.42	0/0/0/0/0
			MX2-ADI-AD	-1619.79	3257.57	0/0/0/0/0
	E2	F_2:3	2MG-AD	-1482.84	2977.69	0/0/1/0/0
			MX1-AD-ADI	-1482.98	2979.95	0/0/1/0/0
			MX1-A-AD	-1483.46	2976.92	0/0/1/0/0
			MX1-EAD-AD	-1484.77	2979.55	0/0/1/0/0

遗传参数 Genetic parameter	柱头长度STL		花柱长度SYL		柱花总长度TSSL		柱头外露率PES
	E1	E2	E1	E2	E1	E2	E1	E2
	MX2-ADI- AD	MX2-ADI- AD	MX2-ADI- AD	MX2-ADI- AD	MX2-EEAD- AD	MX2-ADI- AD	MX2-ADI- ADI	MX1-AD- ADI
一阶参数Univalent parameter
d_a	0.18	0.06	0.12	0.05	-0.28	0.06	-22.32	15.99
d_b	0.05	0.01	-0.02	-0.01		-0.03	-7.61
h_a	0.13	0.11	-0.19	0.13		0.50	-2.71	-4.31
h_b	0.06	0.30	-0.12	0.12		0.19	-1.63
i	-0.05	0.13	0.12	0.05		-0.14	7.56
j_ab	0.17	0.18	0.02	0.07		-0.19	1.59
j_ba	-0.01	-0.03	0.08	0.25		0.32	-2.04
l	-0.25	0.22	0.15	0.28		1.44	-0.71
[d]	-0.70	-0.47	-0.28	-0.28	-0.06	-0.68
[h]	0.10	-0.53	0.15	-0.50	-0.08	-2.29
二阶参数Bivalent parameter
σ²_p	0.051	0.049	0.026	0.029	0.104	0.113	304.86	266.70
σ²_mg	0.040	0.045	0.020	0.030	0.080	0.110	271.96	189.71
σ²_pg	0.000	0.000	0.006	0.000	0.010	0.000	8.42	52.40
h²_mg (%)	81.81	92.86	71.64	93.00	76.02	97.09	89.21	71.13
h²_pg (%)	0.00	0.00	22.21	0.00	10.99	0.00	2.76	19.65

性状 Trait	柱头长度 STL	花柱长度 SYL	柱花总长度 TSSL	柱头外露率 PES
柱头长度 STL	—	0.472^**	0.885^**	0.281^**
花柱长度 SYL	0.369^**	—	0.760^**	0.306^**
柱花总长度 TSSL	0.895^**	0.816^**	—	0.339^**
柱头外露率 PES	0.352^**	0.262^**	0.377^**	—

Genetic analysis of stigma traits with genic male sterile line by mixture model of major gene plus polygene in rice (Oryza sativa L.)

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