蓖麻株高性状主基因+多基因遗传分析

doi:10.3724/SP.J.1006.2019.84127

Abstract

Abstract:

In this study, plant height related traits in Ricinus communis L. were analyzed using the mixed major gene plus polygenes genetic model with two groups of six-generation populations (P₁, P₂, F₁, B₁, B₂, and F₂) derived from the cross YC2×YF1. The results revealed that the plant height was controlled by a pair of major gene and polygenes. The major-gene heritability in B₁, B₂, and F₂ populations was 37.05%/49.57% (group I/group II), 30.51%/34.48%, and 43.98%/43.64%, respectively. The bearing height of primary raceme and the node number of main stems were all controlled by two pairs of major genes and polygenes, with the importance of major-gene genetic components in the order of epistasis >dominance >additive. In the three generations the heritability of major genes conferring the bearing height of primary raceme was 67.91%/92.72%, 86.89%/92.13%, and 60.18%/66.87%, respectively, and that of major genes conferring the node number of main stem were 91.83%/91.50%, 35.22%/63.37%, and 85.76%/94.58%, respectively. As for the length of main stem internode, it was fully controlled by polygenes, the heritability was 47.64%/47.64%, 38.87%/38.87%, and 25.25%/52.71%, respectively. The above genetic models explained the positive transgressive inheritance of plant height, the bearing height of primary raceme and the length of main stem internode as well as the similar performance to the low value parent of the node number of main stem in F₁generation. It suggested that the bearing height of primary raceme and the node number of main stem should be used as indirect selection indexes for plant height at early stage and the node number of main stem of lower value parent should not be too little in high yield breeding.

Key words: Ricinus communis L., plant height related traits, major gene plus polygene model, genetic analysis

CUI Yue,LU Jian-Nong,SHI Yu-Zhen,YIN Xue-Gui,ZHANG Qi-Hao. Genetic analysis of plant height related traits in Ricinus communis L. with major gene plus polygenes mixed model[J].Acta Agronomica Sinica, 2019, 45(7): 1111-1118.

Figures/Tables 5

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Fig. 1

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References 46

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性状 Trait	世代 Generation	单株数 No. of plants	最大值 Max	最小值 Min	极差 Rage	平均值 Mean	标准差 SD	变异系数 CV (%)
株高 PH (cm)	P₁	33	226.00	184.00	42.00	208.12	9.03	4.34
	P₂	32	110.00	74.00	36.00	98.03	8.22	8.39
	F₁	35	245.00	224.00	21.00	230.84	1.53	0.66
	B₁	51	238.00	100.00	138.00	171.12	6.74	3.94
	B₂	48	198.00	77.00	121.00	135.82	6.21	4.57
	F₂-1	162	260.00	60.00	200.00	159.51	38.14	23.91
	F₂-2	121	281.00	80.00	201.00	174.10	45.96	26.40
主穗位高 PRH (cm)	P₁	33	112.00	87.00	25.00	101.69	5.35	5.26
	P₂	32	38.00	24.00	14.00	31.33	3.17	10.13
	F₁	35	129.00	118.00	11.00	125.01	3.48	2.78
	B₁	51	100.00	49.00	51.00	75.65	15.80	20.89
	B₂	48	94.00	39.00	55.00	63.42	16.02	25.26
	F₂-1	162	105.00	12.00	93.00	57.52	22.18	37.35
	F₂-2	121	137.00	29.00	108.00	69.04	34.05	45.90
主茎节数 MSNN	P₁	33	15	9	6	12.12	1.96	16.17
	P₂	32	31	21	10	26.89	2.38	8.85
	F₁	35	15	10	5	12.96	1.51	11.65
	B₁	51	15	9	6	10.68	1.65	15.45
	B₂	48	25	9	16	14.84	3.14	21.16
	F₂-1	162	31	4	27	14.56	4.48	30.77
	F₂-2	121	29	5	24	14.99	4.86	32.42
主茎节长MSIL (cm)	P₁	33	11.20	5.40	5.80	8.14	1.36	16.71
	P₂	32	1.60	0.90	0.70	1.19	0.14	11.76
	F₁	35	12.10	9.00	3.10	10.25	0.91	8.88
	B₁	51	9.00	4.45	4.55	6.52	1.24	19.02
	B₂	48	7.58	2.81	4.77	5.14	1.22	23.74
	F₂-1	162	7.30	1.58	5.72	4.17	1.16	27.82
	F₂-2	121	9.55	2.00	7.55	4.99	1.46	29.26

	性状 Trait	模型 Model	模型含义 Implication of 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
I组	株高 PH	D-0	MX1-AD-ADI	-1215.34	2458.23	0/0/0/0/0
Group I	主穗位高 PRH	E-1	MX2-ADI-AD	-1033.05	2097.31	0/0/0/0/0
	主茎节数 MSNN	E-1	MX2-ADI-AD	-648.77	1326.46	0/0/0/0/0
	主茎节长 MSIL	C-0	PG-ADI	-404.12	827.38	0/0/0/0/0
II组	株高 PH	D-0	MX1-AD-ADI	-898.87	1821.42	0/0/0/0/0
Group II	主穗位高 PRH	E-1	MX2-ADI-AD	-776.23	1585.13	0/0/0/0/0
	主茎节数 MSNN	E-1	MX2-ADI-AD	-475.89	981.14	0/0/0/0/0
	主茎节长 MSIL	C-0	PG-ADI	-324.56	668.02	0/0/0/0/0

世代 Generation	遗传参数 Genetic parameter	株高 PH		主穗位高 PRH		主茎节数 MSNN		主茎节长 MSIL
世代 Generation	遗传参数 Genetic parameter	(D-0) I	(D-0) II	(E-0) I	(E-0) II	(E-0) I	(E-0) II	(C-0) I	(C-0) II
	d_a	35.87	41.63	-9.39	-3.88	-4.44	-4.58
	d_b			-9.39	-3.88	-4.44	-4.58
	h_a	-4.85	-8.27	17.78	10.22	-6.60	-7.27
	h_b			17.78	10.16	-8.17	-7.68
	i			42.42	42.72	-0.07	-1.34
	j_ab			-11.82	0.77	2.30	0.28
	j_ba			-11.82	-16.41	3.88	3.12
	l			40.39	29.78	9.12	7.79
	[d]			16.54	27.51	-0.57	1.95
	[h]			95.17	83.79	-3.08	-0.47
	h_a/d_a	-0.14	-0.20	-1.89	-2.64	1.49	1.59
	h_b/d_b			-1.89	-2.64	1.84	1.68
B₁	σ²_p	1243.83	1235.34	255.84	255.84	2.94	2.94	1.91	1.91
	σ²_mg	460.84	612.36	173.74	237.22	2.70	2.69
	σ²_pg	718.38	561.23	64.80	1.32	0.00	0.00	0.91	0.91
	h²_mg(%)	37.05	49.57	67.91	92.72	91.83	91.50
	h²_pg(%)	57.86	45.31	25.40	0.53	0.00	0.00	47.64	47.64
B₂	σ²_p	899.84	900.96	282.33	282.33	13.46	13.46	1.65	1.65
	σ²_mg	274.54	310.65	245.32	260.11	4.74	8.53
	σ²_pg	561.03	524.54	20.07	5.35	5.42	2.90	0.64	0.64
	h²_mg(%)	30.51	34.48	86.89	92.13	35.22	63.37
	h²_pg(%)	62.21	58.15	7.07	1.86	40.32	21.55	38.87	38.87
F₂	σ²_p	1448.34	2086.94	380.38	779.11	20.09	23.63	1.35	2.12
	σ²_mg	636.98	910.74	228.91	520.99	17.23	22.35
	σ²_pg	754.25	1138.15	135.22	241.46	0.00	0.00	0.34	1.12
	h²_mg(%)	43.98	43.64	60.18	66.87	85.76	94.58
	h²_pg(%)	51.54	53.47	35.45	30.94	0.00	0.00	25.25	52.71

性状Trait	株高PH	主穗位高PRH	主茎节数MSNN	主茎节长MSIL
株高 PH		0.844^**	0.474^**	0.709^**
主穗位高 PRH	0.725^**		0.726^**	0.613^**
主茎节数 MSNN	0.309^**	0.569^**		-0.242^**
主茎节长 MSIL	0.508^**	0.600^**	-0.254^**

Genetic analysis of plant height related traits in Ricinus communis L. with major gene plus polygenes mixed model

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