Construction strategy of core collections of tomato germplasm resources in Ningxia, China

doi:10.3969/j.issn.1004-1524.2022.09.07

Acta Agriculturae Zhejiangensis ›› 2022, Vol. 34 ›› Issue (9): 1877-1888.DOI: 10.3969/j.issn.1004-1524.2022.09.07

• Horticultural Science • Previous Articles Next Articles

Construction strategy of core collections of tomato germplasm resources in Ningxia, China

ZHENG Fushun¹(), WANG Xiaomin¹^,²^,³^,⁴^,^*(), LI Guohua¹, LI Honglei¹, LIU Peijun¹, HU Xinhua⁵, FU Jinjun⁵

1. School of Agriculture, Ningxia University, Yinchuan 750021, China
2. Ningxia Modern Facility Horticulture Engineering and Technology Research Center, Yinchuan 750021, China
3. Key Laboratory of Modern Molecular Breeding for Dominant and Special Crops in Ningxia, Yinchuan 750021, China
4. Ningxia Facility Horticulture (Ningxia University) Technology Innovation Center, Yinchuan 750021, China
5. Ningxia Jufeng Seedlings Co., Ltd., Yinchuan 750021, China

Received:2021-12-08 Online:2022-09-25 Published:2022-09-30
Contact: WANG Xiaomin

Abstract

Abstract:

In order to select a better strategy for core collection construction. In this study, we based on the data of 20 phenotypic traits of 480 tomato germplasms, 8 clustering methods and 5 different sampling proportions were compared; On this basis, two genetic distances, the sampling proportion of the top two, three sampling methods and the clustering method of the top two were used for combination test, and the representative evaluation of the 24 core collections were carried out. The results showed that the order of systematic clustering methods were Ward’s method>Weighted pair-group average>Complete linkage>Weighted pair-group average>Centroid method>Single linkage>Unweighted pair-group average. The order of sampling proportions were 15%>30%>25%>20%>10%. The best construction method of combination test was that the genetic distance was Euclidean distance, the sampling proportion was 15%, the sampling method was random sampling method, and the clustering method was the Single linkage. This study provided the optimal construction strategy for the construction of core collection, and provided theoretical basis and technical support for the related research of tomato germplasm resources in Ningxia.

Key words: Ningxia, tomato, germplasm resources, core collections, construction strategy

CLC Number:

S641.2

ZHENG Fushun, WANG Xiaomin, LI Guohua, LI Honglei, LIU Peijun, HU Xinhua, FU Jinjun. Construction strategy of core collections of tomato germplasm resources in Ningxia, China[J]. Acta Agriculturae Zhejiangensis, 2022, 34(9): 1877-1888.

Figures/Tables 7

References 23

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构建方法 Construction methods	遗传距离 Genetic distance	抽样比例 Sampling proportions	抽样方法 Sampling methods	系统聚类法 Clustering methods
C1	欧氏距离Eulidean distance	a	随机取样法Random sampling	A
C2	欧氏距离Eulidean distance	a	随机取样法Random sampling	B
C3	欧氏距离Eulidean distance	a	优先取样法Preferred sampling	A
C4	欧氏距离Eulidean distance	a	优先取样法Preferred sampling	B
C5	欧氏距离Eulidean distance	a	偏离度取样法Deviation sampling	A
C6	欧氏距离Eulidean distance	a	偏离度取样法Deviation sampling	B
C7	欧氏距离Eulidean distance	b	随机取样法Random sampling	A
C8	欧氏距离Eulidean distance	b	随机取样法Random sampling	B
C9	欧氏距离Eulidean distance	b	优先取样法Preferred sampling	A
C10	欧氏距离Eulidean distance	b	优先取样法Preferred sampling	B
C11	欧氏距离Eulidean distance	b	偏离度取样法Deviation sampling	A
C12	欧氏距离Eulidean distance	b	偏离度取样法Deviation sampling	B
C13	马氏距离Mahalanobis distance	a	随机取样法Random sampling	A
C14	马氏距离Mahalanobis distance	a	随机取样法Random sampling	B
C15	马氏距离Mahalanobis distance	a	优先取样法Preferred sampling	A
C16	马氏距离Mahalanobis distance	a	优先取样法Preferred sampling	B
C17	马氏距离Mahalanobis distance	a	偏离度取样法Deviation sampling	A
C18	马氏距离Mahalanobis distance	a	偏离度取样法Deviation sampling	B
C19	马氏距离Mahalanobis distance	b	随机取样法Random sampling	A
C20	马氏距离Mahalanobis distance	b	随机取样法Random sampling	B
C21	马氏距离Mahalanobis distance	b	优先取样法Preferred sampling	A
C22	马氏距离Mahalanobis distance	b	优先取样法Preferred sampling	B
C23	马氏距离Mahalanobis distance	b	偏离度取样法Deviation sampling	A
C24	马氏距离Mahalanobis distance	b	偏离度取样法Deviation sampling	B

构建方法 Construction methods	遗传距离 Genetic distance	抽样比例 Sampling proportions	抽样方法 Sampling methods	系统聚类法 Clustering methods
C1	欧氏距离Eulidean distance	a	随机取样法Random sampling	A
C2	欧氏距离Eulidean distance	a	随机取样法Random sampling	B
C3	欧氏距离Eulidean distance	a	优先取样法Preferred sampling	A
C4	欧氏距离Eulidean distance	a	优先取样法Preferred sampling	B
C5	欧氏距离Eulidean distance	a	偏离度取样法Deviation sampling	A
C6	欧氏距离Eulidean distance	a	偏离度取样法Deviation sampling	B
C7	欧氏距离Eulidean distance	b	随机取样法Random sampling	A
C8	欧氏距离Eulidean distance	b	随机取样法Random sampling	B
C9	欧氏距离Eulidean distance	b	优先取样法Preferred sampling	A
C10	欧氏距离Eulidean distance	b	优先取样法Preferred sampling	B
C11	欧氏距离Eulidean distance	b	偏离度取样法Deviation sampling	A
C12	欧氏距离Eulidean distance	b	偏离度取样法Deviation sampling	B
C13	马氏距离Mahalanobis distance	a	随机取样法Random sampling	A
C14	马氏距离Mahalanobis distance	a	随机取样法Random sampling	B
C15	马氏距离Mahalanobis distance	a	优先取样法Preferred sampling	A
C16	马氏距离Mahalanobis distance	a	优先取样法Preferred sampling	B
C17	马氏距离Mahalanobis distance	a	偏离度取样法Deviation sampling	A
C18	马氏距离Mahalanobis distance	a	偏离度取样法Deviation sampling	B
C19	马氏距离Mahalanobis distance	b	随机取样法Random sampling	A
C20	马氏距离Mahalanobis distance	b	随机取样法Random sampling	B
C21	马氏距离Mahalanobis distance	b	优先取样法Preferred sampling	A
C22	马氏距离Mahalanobis distance	b	优先取样法Preferred sampling	B
C23	马氏距离Mahalanobis distance	b	偏离度取样法Deviation sampling	A
C24	马氏距离Mahalanobis distance	b	偏离度取样法Deviation sampling	B

构建方法 Construction methods	均值差异百分率 Mean difference percentage	方差差异百分率 Percentage of variance difference	极差符合率 Coincidence rate of range	变异系数变化率 Variable rate of coefficient of variation
CX1	10.00	10.00	93.46	100.85
CX2	0	15.00	92.22	109.97
CX3	5.00	35.00	91.52	111.8
CX4	40.00	45.00	94.86	119.25
CX5	0	5.00	92.44	108.49
CX6	0	10.00	90.94	104.53
CX7	0	15.00	91.34	106.58
CX8	0	15.00	93.66	109.07

构建方法 Construction methods	均值差异百分率 Mean difference percentage	方差差异百分率 Percentage of variance difference	极差符合率 Coincidence rate of range	变异系数变化率 Variable rate of coefficient of variation
CX1	10.00	10.00	93.46	100.85
CX2	0	15.00	92.22	109.97
CX3	5.00	35.00	91.52	111.8
CX4	40.00	45.00	94.86	119.25
CX5	0	5.00	92.44	108.49
CX6	0	10.00	90.94	104.53
CX7	0	15.00	91.34	106.58
CX8	0	15.00	93.66	109.07

性状 Traits	参数 Parameter	原群体 Initial population	构建方法Construction methods
性状 Traits	参数 Parameter	原群体 Initial population	CX1	CX2	CX3	CX5	CX6	CX7	CX8
1	均值Mean	6.49	6.50	6.63	6.52	6.60	6.56	6.58	6.58
	方差Variance	0.65	0.94	0.79	0.73	1.48^*	0.63	0.63	0.63
	变异系数CV	12.43	14.89	13.44	13.04	18.42^*	12.13	12.07	12.07
2	均值Mean	151.61	150.88	145.40	142.83	109.28^*	141.10	146.32	145.76
	方差Variance	3 688.79	3 817.41	4 893.83	5 460.42^*	6 462.94^**	3 949.25	4 567.26	4 974.95
	变异系数CV	40.06	40.95	48.11	51.74	73.57	44.54	46.19	48.39
3	均值Mean	27.26	26.25	25.62	25.07	21.87^**	26.79	26.67	26.06
	方差Variance	55.83	56.38	74.28	89.62^**	97.94^**	78.25^*	75.65	73.88
	变异系数CV	27.41	28.61	33.64	37.76	45.25	33.02	32.61	32.98
4	均值Mean	11.96	12.09	11.80	10.86^*	10.04	11.85	11.81	11.41
	方差Variance	10.94	9.31	13.23	13.28	19.94^*	11.03	11.30	11.28
	变异系数CV	27.64	25.23	30.82	33.54	44.47	28.04	28.47	29.43
5	均值Mean	55.91	55.98	54.02	53.59	47.97^*	55.52	55.30	54.57
	方差Variance	117.06	115.19	171.09^*	152.46	243.06^*	132.68	120.44	178.02^*
	变异系数CV	19.35	19.17	24.21	23.04	32.50	20.75	19.84	24.45
6	均值Mean	64.02	65.76	61.87	60.60	54.00^*	63.41	63.81	62.23
	方差Variance	223.59	149.86^*	289.37	282.65	452.54^**	260.20	241.83	277.60
	变异系数CV	23.36	18.61	27.49	27.74	39.40	25.44	24.37	26.77
7	均值Mean	3.07	3.12	2.94	3.03	2.93^*	3.07	3.01	3.03
	方差Variance	0.30	0.38	0.38	0.37	0.46	0.34	0.35	0.38
	变异系数CV	17.93	19.80	20.92	20.03	23.07	19.10	19.65	20.46
8	均值Mean	6.23	6.02	6.44	6.51	6.99	6.32	6.50	6.33
	方差Variance	2.03	1.70	2.30	2.29	3.67^**	1.90	2.86^*	2.49
	变异系数CV	22.87	21.67	23.56	23.26	27.40	21.84	26.05	24.97
9	均值Mean	4.65	4.58	4.52	4.52	3.98	4.60	4.54	4.41
	方差Variance	1.65	1.65	2.04	2.72	2.79^**	2.12	1.70	1.70
	变异系数CV	27.61	28.05	31.61	36.50	41.93	31.60	28.71	29.48
10	均值Mean	7.05	7.11	6.85	6.65	6.09^*	6.86	6.88	6.63
	方差Variance	2.42	1.96	3.29	3.68^*	4.38^**	2.72	2.69	2.70
	变异系数CV	22.05	19.70	26.47	28.84	34.40	24.03	23.84	24.80
11	均值Mean	7.05	6.77	7.00	7.23	7.00	7.02	7.15	7.06
	方差Variance	1.10	1.46	1.36	1.45	1.66	1.21	1.74^**	1.59^*
	变异系数CV	14.87	17.83	16.67	16.70	18.40	15.68	18.48	17.84
12	均值Mean	6.38	6.21	7.08	7.23	8.71	6.63	6.48	6.85
	方差Variance	12.70	11.70	20.03^*	19.33^*	29.49	13.43	14.77	19.28^*
	变异系数CV	55.85	55.10	63.19	60.82	62.34	55.32	59.31	64.06
13	均值Mean	2.17	2.18	2.18	2.18	2.25^*	2.17	2.18	2.18
	方差Variance	0.02	0.02	0.02	0.02	0.03^**	0.02	0.02	0.02
	变异系数CV	6.31	7.09	6.58	6.61	7.94	6.35	7.02	7.18
14	均值Mean	2.47	2.44	2.44	2.52	2.46	2.52	2.48	2.40
	方差Variance	0.25	0.25	0.25	0.25	0.25	0.25	0.25	0.24
	变异系数CV	20.20	20.57	20.57	20.03	20.49	20.03	20.60	20.63
15	均值Mean	2.49	2.60	2.40	2.48	2.56	2.48	2.52	2.56
	方差Variance	0.27	0.33	0.29	0.30	0.34	0.30	0.34	0.29
	变异系数CV	20.92	22.04	22.35	22.00	22.36	22.00	23.13	21.16
16	均值Mean	0.16	0.21	0.15	0.21	0.21	0.15	0.21	0.19
	方差Variance	0.14	0.17	0.13	0.17	0.17	0.13	0.17	0.16
	变异系数CV	229.38	197.00	244.58	197.00	195.24	244.58	197.00	210.37
17	均值Mean	4.34	4.02^*	4.19	4.21	4.06	4.23	4.15	4.25
	方差Variance	0.59	1.04^**	0.88^*	0.93^*	0.83^*	0.90^*	0.94^*	0.83^*
	变异系数CV	17.74	25.39	22.39	22.97	22.39	22.48	23.33	21.43
18	均值Mean	0.15	0.17	0.19	0.19	0.19	0.19	0.17	0.19
	方差Variance	0.13	0.14	0.16	0.16	0.16	0.16	0.14	0.16
	变异系数CV	239.33	225.97	210.37	210.37	207.37	210.37	225.97	210.37
19	均值Mean	1.02	3.40^*	1.68	1.73	1.26	1.89	1.91	1.53
	方差Variance	14.65	60.54^**	26.77^**	31.23^**	25.13	32.66^**	29.81^**	29.28^**
	变异系数CV	376.1	229.18	307.64	322.21	397.20	303.03	286.12	353.77
20	均值Mean	2.81	2.81	2.81	2.88	3.17	2.81	2.85	2.81
	方差Variance	0.77	0.79	0.75	0.96	1.21^*	0.88	1.02	0.88
	变异系数CV	31.25	31.68	30.82	34.13	34.64	33.33	35.40	33.33

Construction strategy of core collections of tomato germplasm resources in Ningxia, China

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构建方法 Construction methods	均值差异百分率 Mean difference percentage	方差差异百分率 Percentage of variance difference	极差符合率 Coincidence rate of range	变异系数变化率 Variable rate of coefficient of variation
C1	0	10.00	94.54	106.02
C2	0	10.00	96.82	108.63
C3	60.00	65.00	100.00	120.76
C4	50.00	65.00	100.00	120.37
C5	0	35.00	97.26	111.00
C6	0	15.00	97.20	107.31
C7	0	15.00	91.87	100.35
C8	0	5.00	94.51	99.58
C9	45.00	55.00	100.00	121.31
C10	60.00	55.00	100.00	121.24
C11	0	45.00	98.54	109.98
C12	5.00	50.00	98.37	112.79
C13	0	5.00	97.27	104.09
C14	0	0	97.78	105.39
C15	0	35.00	100.00	109.34
C16	0	40.00	100.00	110.60
C17	0	20.00	99.88	105.80
C18	0	15.00	99.88	105.63
C19	0	5.00	96.26	99.20
C20	0	0	96.50	100.17
C21	10.00	40.00	100.00	111.78
C22	40.00	40.00	100.00	111.81
C23	5.00	60.00	99.56	108.47
C24	5.00	40.00	99.67	107.45

性状 Traits	参数 Parameter		原群体 Initial population		构建方法 Construction methods
性状 Traits	参数 Parameter		原群体 Initial population		C1		C2		C5		C6		C7		C8		C11		C12		C13		C14		C15		C16		C17		C18		C19		C20		C21		C23		C24
1	均值Mean		6.49		6.44		6.56		6.56		6.58		6.54		6.58		6.44		6.47		6.48		6.47		6.54		6.53		6.51		6.53		6.53		6.53		6.53		6.43		6.42
	方差Variance		0.65		0.93^*		0.84		0.81		0.73		0.56		0.73		0.84		0.76		0.74		0.8		0.80		0.85^*		0.74		0.73		0.70		0.64		0.87^*		0.85^*		0.83^*
	变异系数CV		12.43		14.94		14.00		13.76		12.94		11.46		12.94		14.24		13.47		13.28		13.79		13.63		14.14		13.22		13.06		12.80		12.26		14.24		14.32		14.21
2	均值Mean		151.61		147.41		143.41		149.09		150.05		150.66		150.57		147.86		146.65		147.14		148.27		143.99		144.67		154.70		153.90		151.52		150.86		141.43		146.66		149.34
	方差Variance		3 688.79		4 526.67		4 696.06		4 876.88^*		4 282.62		3 552.78		4 052.65		4 588.49		4 936.38^*		4 340.35		4 189.12		4 817.92^*		5 012.71^**		4 389.72		4 304.74		3 745.36		4 027.53		4 877.82^*		4 518.45		4 416.71
	变异系数CV		40.06		45.64		47.79		46.84		43.61		39.56		42.28		45.81		47.91		44.78		43.65		48.21		48.94		42.83		42.63		40.39		42.07		49.38		45.83		44.50
3	均值Mean		27.26		26.47		26.10		27.15		27.56		27.65		27.32		27.03		26.21		26.74		26.6		26.10		25.78		27.47		27.39		26.93		27.04		25.10		26.49		26.80
	方差Variance		55.83		69.51		71.68		72.27		65.17		54.22		66.39		69.45		74.28^*		67.85		63.12		75.67^**		76.17^**		64.96		65.78		59.01		65.77		71.77^*		67.55		66.60
	变异系数CV		27.41		31.50		32.44		31.31		29.29		26.64		29.83		30.84		32.88		30.80		29.86		33.32		33.85		29.34		29.61		28.53		30.00		33.75		31.02		30.45
4	均值Mean		11.96		11.82		11.49		11.68		11.82		12.01		12.12		11.59		11.43		11.83		11.72		11.56		11.40		11.91		11.85		12.03		11.99		11.53		11.71		11.77
	方差Variance		10.94		11.64		10.97		12.68		11.61		9.33		11.56		14.26		14.84^*		11.68		10.96		13.57^*		13.43		11.90		12.18		10.20		11.35		14.99^**		14.15^*		13.38
	变异系数CV		27.64		28.87		28.82		30.50		28.83		25.43		28.04		32.58		33.70		28.88		28.25		31.87		32.14		28.97		29.46		26.55		28.09		33.58		32.12		31.06
5	均值Mean		55.91		55.73		54.88		54.95		55.77		55.70		56.21		53.87		54.00		55.25		55.71		54.32		54.31		55.59		55.54		56.18		55.80		54.17		54.73		54.94
	方差Variance		117.06		126.20		169.46^*		153.81		138.87		146.28		127.51		188.91^**		184.34^**		135.97		145.95^*		154.17^*		157.82^*		148.55^*		148.43^*		118.53		120.92		160.71^**		159.93^**		161.31^**
	变异系数CV		19.35		20.16		23.72		22.57		21.13		21.71		20.09		25.52		25.14		21.11		21.69		22.86		23.13		21.93		21.94		19.38		19.71		23.40		23.11		23.12
6	均值Mean		64.02		64.14		62.48		63.83		65.02		64.84		64.16		63.03		63.22		63.46		63.53		62.01		61.82		64.34		64.21		64.50		63.84		61.61		63.14		63.66
	方差Variance		223.59		274.41		268.22		306.48^*		290.81		204.72		224.70		287.69		320.56^*		261.16		251.83		304.44^**		313.16^**		258.65		256.34		218.71		226.27		308.57^**		282.09^*		275.57
	变异系数CV		23.36		25.83		26.21		27.43		26.23		22.07		23.37		26.91		28.32		25.47		24.98		28.14		28.63		25.00		24.94		22.93		23.56		28.51		26.60		26.08
7	均值Mean		3.07		3.02		3.04		3.11		3.12		3.13		3.15		3.13		3.09		3.07		3.05		3.04		3.00		3.10		3.10		3.12		3.09		3.07		3.10		3.10
	方差Variance		0.30		0.34		0.39		0.50^**		0.50^**		0.37		0.35		0.48^**		0.48^**		0.34		0.36		0.34		0.37		0.42^**		0.41^*		0.31		0.32		0.36		0.43^**		0.39^*
	变异系数CV		17.93		19.30		20.39		22.87		22.66		19.42		18.70		22.20		22.46		18.99		19.57		19.23		20.20		20.83		20.63		17.86		18.41		19.45		21.11		20.20
8	均值Mean		6.23		6.43		6.31		6.38		6.28		6.23		6.23		6.27		6.24		6.30		6.25		6.41		6.40		6.26		6.20		6.24		6.24		6.41		6.25		6.27
	方差Variance		2.03		2.64		2.62		3.24^**		2.81^*		2.20		1.96		3.01^**		2.79^*		2.37		2.37		2.63^*		2.44		2.61^*		2.55^*		1.99		2.06		2.48		2.87^**		2.76^**
	变异系数CV		22.87		25.28		25.62		28.21		26.73		23.81		22.50		27.66		26.75		24.46		24.65		25.32		24.43		25.82		25.75		22.61		22.99		24.58		27.11		26.47
9	均值Mean		4.65		4.63		4.46		4.67		4.72		4.65		4.71		4.74		4.72		4.55		4.63		4.52		4.43		4.68		4.70		4.62		4.65		4.36^*		4.63		4.67
	方差Variance		1.65		1.70		1.63		2.20^*		2.09		1.86		1.67		2.42^*		2.57^**		1.76		1.73		2.00		1.97		2.00		2.00		1.75		1.77		1.94		2.12^*		2.11^*
	变异系数CV		27.61		28.21		28.66		31.76		30.62		29.34		27.48		32.86		33.95		29.17		28.46		31.28		31.66		30.18		30.09		28.63		28.57		31.93		31.51		31.14
10	均值Mean		7.05		6.93		6.73		6.96		7.11		7.10		7.04		7.06		6.90		6.96		6.93		6.81		6.83		7.09		7.07		7.02		6.96		6.77		6.94		6.95
	方差Variance		2.42		2.67		2.81		3.07		2.77		2.38		2.28		2.98		3.08		2.72		2.73		2.84		3.15^*		2.89		2.91		2.40		2.42		3.03^*		2.93		2.77
	变异系数CV		22.05		23.57		24.92		25.20		23.40		21.75		21.45		24.44		25.43		23.68		23.84		24.76		26.00		23.95		24.11		22.07		22.35		25.74		24.69		23.92
11	均值Mean		7.05		7.10		7.01		7.04		7.08		6.90		6.94		6.99		7.15		7.08		7.06		7.03		7.06		7.08		7.09		7.01		7.00		6.97		6.97		6.99
	方差Variance		1.10		1.47^*		1.48^*		1.87^**		1.96^**		1.10		1.07		1.76^**		1.79^**		1.19		1.31		1.27		1.30		1.55^**		1.52^**		1.20		1.08		1.43^*		1.44^*		1.55^**
	变异系数CV		14.87		17.08		17.34		19.43		19.79		15.22		14.88		18.99		18.72		15.42		16.23		16.05		16.15		17.61		17.41		15.64		14.83		17.13		17.21		17.78
12	均值Mean		6.38		6.61		6.86		6.76		6.49		5.88		6.40		6.44		7.01		6.54		6.49		7.02		6.99		6.38		6.47		6.26		6.43		7.14		6.67		6.51
	方差Variance		12.70		14.66		17.22^*		18.97^**		17.15		8.65^*		11.77		16.05		20.49^**		14.08		12.94		17.95^**		17.50^**		14.11		14.73		12.04		12.9		19.74^**		16.51^*		15.54
	变异系数CV		55.85		57.92		60.48		64.40		63.86		50.05		53.57		62.17		64.54		57.37		55.45		60.35		59.87		58.92		59.36		55.40		55.86		62.24		60.90		60.52
13		均值Mean		2.17		2.18		2.18		2.17		2.17		2.15		2.17		2.17		2.19		2.18		2.17		2.19		2.19		2.17		2.17		2.16		2.17		2.19		2.18		2.17
		方差Variance		0.02		0.02		0.02		0.03^*		0.03^*		0.02		0.02		0.02		0.03^**		0.02		0.02		0.02^*		0.03^**		0.02		0.02^*		0.02		0.02		0.03^*		0.03^**		0.03^*
		变异系数CV		6.31		6.76		6.79		7.46		7.30		6.09		6.40		7.22		7.69		6.50		6.47		7.08		7.25		6.97		7.00		6.19		6.62		7.23		7.31		7.31
14		均值Mean		2.47		2.49		2.42		2.47		2.49		2.50		2.44		2.51		2.49		2.47		2.44		2.47		2.47		2.49		2.47		2.49		2.49		2.49		2.50		2.48
		方差Variance		0.25		0.25		0.25		0.25		0.25		0.25		0.25		0.25		0.25		0.25		0.25		0.25		0.25		0.25		0.25		0.25		0.25		0.25		0.25		0.25
		变异系数CV		20.20		20.25		20.54		20.34		20.25		20.14		20.47		20.02		20.25		20.30		20.40		20.30		20.26		20.17		20.26		20.17		20.17		20.17		20.07		20.22
15		均值Mean		2.49		2.50		2.57		2.56		2.56		2.49		2.54		2.51		2.56		2.50		2.51		2.56		2.51		2.52		2.51		2.46		2.51		2.51		2.51		2.53
		方差Variance		0.27		0.31		0.28		0.33		0.33		0.28		0.34		0.31		0.33		0.29		0.28		0.29		0.28		0.29		0.29		0.26		0.29		0.28		0.29		0.29
		变异系数CV		20.92		22.27		20.48		22.65		22.65		21.34		22.82		22.14		22.65		21.68		21.10		21.09		21.10		21.48		21.62		20.9		21.55		21.10		21.62		21.41
16		均值Mean		0.16		0.18		0.18		0.21		0.21		0.15		0.18		0.26		0.28^*		0.18		0.14		0.17		0.19		0.17		0.18		0.21		0.19		0.17		0.25^*		0.24^*
		方差Variance		0.14		0.15		0.15		0.17		0.17		0.13		0.15		0.20^*		0.20^**		0.15		0.12		0.14		0.15		0.14		0.15		0.17		0.16		0.14		0.19^**		0.19^**
		变异系数CV		229.38		214.53		214.53		196.30		196.30		237.14		214.53		168.19		162.38		213.78		249.87		224.39		208.89		224.39		213.78		195.62		204.25		218.94		173.81		177.09
17		均值Mean		4.34		4.17		4.28		4.21		4.28		4.25		4.31		4.21		4.14		4.20		4.28		4.24		4.33		4.26		4.28		4.24		4.25		4.21		4.24		4.21
		方差Variance		0.59		0.82^*		0.77		0.84^*		0.79		0.84^*		0.53		0.90^**		1.02^**		0.74^*		0.69		0.67		0.70		0.78^*		0.75^*		0.69		0.65		0.68		0.80^*		0.82^**
		变异系数CV		17.74		21.69		20.47		21.82		20.84		21.54		16.83		22.54		24.43		20.41		19.44		19.36		19.30		20.75		20.22		19.56		18.98		19.65		21.08		21.56
18		均值Mean		0.15		0.17		0.15		0.21		0.19		0.14		0.17		0.24		0.22		0.16		0.17		0.17		0.14		0.19		0.19		0.18		0.19		0.15		0.22		0.22
		方差Variance		0.13		0.14		0.13		0.17		0.16		0.12		0.14		0.18^*		0.18^*		0.14		0.14		0.14		0.12		0.15		0.15		0.15		0.15		0.13		0.17^*		0.17^*
		变异系数CV		239.33		225.18		237.14		196.3		204.97		250.75		225.18		181.13		188.40		230.17		224.39		224.39		249.87		208.89		208.89		213.78		208.89		236.31		191.59		191.59
19		均值Mean		1.02		1.77		1.22		1.84		2.25		1.49		1.64		2.14		1.68		1.42		1.06		1.13		1.10		1.61		1.54		1.27		1.25		0.99		1.45		1.45
		方差Variance		14.65		24.43^**		20.59^**		27.88^**		36.61		21.31^**		22.19^**		34.49^**		31.02^**		19.26^**		16.16		18.51^*		15.93		23.67^**		23.15^**		19.75^**		16.75		16		23.35^**		23.35^**
		变异系数CV		376.1		278.88		372.09		286.58		269.22		310.28		287.90		274.81		332.26		308.70		378.61		381.74		364.10		302.10		312.70		351.27		327.13		404.20		334.14		334.14
20		均值Mean		2.81		2.85		2.82		2.82		2.78		2.76		2.75		2.76		2.86		2.83		2.80		2.89		2.86		2.82		2.82		2.78		2.80		2.94		2.88		2.85
		方差Variance		0.77		0.92		0.80		1.00		0.88		0.75		0.75		0.92		0.91		0.81		0.82		0.91		0.95		0.83		0.85		0.73		0.76		0.97^*		0.94		0.88
		变异系数CV		31.25		33.69		31.68		35.38		33.76		31.26		31.57		34.62		33.34		31.79		32.34		33.03		33.99		32.40		32.67		30.83		31.22		33.50		33.64		32.88

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