Stability Analysis and Genetic Variation in Seedling Growth of 51 Larix olgensis Clones from Different Sites

doi:10.7525/j.issn.1673-5102.2021.03.003

Abstract

Abstract:

Larix olgensis is one of the most important fast-growing timber species in northeast China. In this study， 51 L. olgensis clones from different stites were used as materials， the height and ground diameter of the 2-year-old seedlings were investigated and analyzed on the genetic stability and variation respectively. The results showed that the differences of seedling height and ground diameter for L. olgensis were extremely significant（P<0.01） within sites， clones or sites×clones respectively. The phenotypic variation coefficient of seedling height and ground diameter at different sites were from 23.89%-36.82%； and the repeatability of the ground diameter was 0.172 at Siping， but the repeatability of the rest sites were from 0.573-0.891 respectively. Genetic stability analysis results showed that 28 clones including LO 13 had the higher genetic stability respectively. The results of correlation analysis showed that there was an extremely significant positive correlation between seedling height and ground diameter. 10 clones with good comprehensive performance were selected from different site using the method of comprehensive evaluation of multiple traits with a selection rate of 20%； Both clones LO 10 and LO 26 were selected as elite clones showing the excellent performance and the stronger genetic stability in the different cite respectively.

Key words: Larix olgensis, variation, genetic stability

CLC Number:

S791.22

Fang WANG, Lu-Ping JIANG, Qin-Hui ZHANG, Zhi-Min LU, Yu-Chun YANG, Jian-Qiu ZHANG, Xi-Yang ZHAO. Stability Analysis and Genetic Variation in Seedling Growth of 51 Larix olgensis Clones from Different Sites[J]. Bulletin of Botanical Research, 2021, 41(3): 336-343.

Figures/Tables 5

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变异来源 Variance source	苗高Seedling height				地径Ground diameter
变异来源 Variance source	df	MS	F	Sig.	df	MS	F	Sig.
地点Sites	2	196 509.177	821.240	0.000	2	1 021.700	433.436	0.000
无性系Clones	50	2 166.285	9.053	0.000	50	10.981	4.659	0.000
地点×无性系Sites×Clones	100	519.811	2.172	0.000	100	3.825	1.623	0.000
误差Error	1 683	239.283			1 683	2.357

地点 Sites	性状 Traits	平均值 Mean value	变幅 Variable amplitude(mm)	PCV(%)	重复力 Repeatability
E1	苗高Seedling height(cm)	69.68±25.65	42.65~99.70	36.82	0.777
E1	地径Ground diameter(mm)	7.31±2.18	5.62~9.16	29.84	0.573
E2	苗高Seedling height(cm)	35.28±9.18	25.67~48.83	26.03	0.891
E2	地径Ground diameter(mm)	5.06±1.21	3.51~6.64	23.89	0.172
E3	苗高Seedling height(cm)	43.77±13.38	27.17~60.55	30.57	0.741
E3	地径Ground diameter(mm)	5.08±1.34	3.79~6.17	26.42	0.577

无性系 Clones	苗高 Seedling height（cm）	_iCV (%)	b_i	适应地区 Adapting range	无性系 Clones	苗高 Seedling height（cm）	_iCV (%)	b_i	适应地区 Adapting range
LO 26	66.34	10.10	1.36	E1~E3	LO 49	47.05	8.72	0.78	E1~E3
LO 30	62.69	23.47	1.81	E1	LO 18	46.69	8.37	1.22	E1~E3
LO 16	62.20	21.36	1.73	E1	LO 35	46.67	2.28	1.01	E1~E3
LO 22	61.94	13.45	1.46	E1	LO 36	46.23	5.35	0.94	E1~E3
LO 10	61.04	11.00	1.36	E1	LO 33	46.15	8.56	0.85	E1~E3
LO 20	61.00	16.37	1.56	E1	LO 5	45.89	6.70	0.87	E1~E3
LO 13	60.21	6.49	1.20	E1~E3	LO 15	45.88	8.05	0.82	E1~E3
LO 7	60.10	5.37	0.82	E1~E3	LO 9	45.84	4.17	0.92	E1~E3
LO 25	58.88	6.16	1.18	E1~E3	LO 31	45.78	1.23	1.02	E1~E3
LO 6	58.43	14.69	1.48	E1	LO 2	45.75	2.37	0.97	E1~E3
LO 38	57.70	4.31	1.13	E1~E3	LO 41	45.72	7.99	0.80	E1~E3
LO 23	56.81	15.31	1.40	E1	LO 27	45.53	3.74	0.91	E1~E3
LO 12	56.52	7.12	1.08	E1~E3	LO 44	44.86	7.82	0.88	E1~E3
LO 50	55.21	2.44	1.02	E1~E3	LO 51	44.58	12.97	0.73	E2
LO 11	54.48	8.37	1.02	E1~E3	LO 48	44.11	21.50	0.52	E3
LO 17	54.03	19.33	1.57	E1	LO 43	44.04	6.31	0.87	E1~E3
LO 37	53.74	11.32	1.32	E1~E3	LO 45	41.87	21.37	0.50	E2
LO 29	51.15	7.70	1.19	E1~E3	LO 39	41.63	17.10	0.60	E2
LO 14	51.09	6.15	0.88	E1~E3	LO 32	40.61	24.83	0.46	E2, E3
LO 21	50.92	10.11	0.73	E1~E3	LO 4	40.46	15.55	1.19	E1
LO 24	50.11	7.29	0.8	E1~E3	LO 1	39.62	9.17	0.82	E1~E3
LO 28	49.69	7.07	0.82	E1~E3	LO 40	38.84	15.35	0.69	E3
LO 19	48.63	22.29	1.60	E1	LO 42	36.98	20.26	0.70	E2
LO 34	48.32	7.01	1.16	E1~E3	LO 46	35.51	24.23	0.53	E2, E3
LO 47	48.14	10.46	0.86	E1~E3	LO 3	35.25	31.29	0.41	E2, E3
LO 8	47.47	4.46	0.90	E1~E3

无性系 Clones	E1	无性系 Clones	E2	无性系 Clones	E3	无性系 Clones	E1	无性系 Clones	E2	无性系 Clones	E3
无性系 Clones	Qi	无性系 Clones	Qi	无性系 Clones	Qi	无性系 Clones	Qi	无性系 Clones	Qi	无性系 Clones	Qi
LO 30	1.41	LO 7	1.41	LO 26	1.38	LO 27	1.20	LO 37	1.21	LO 3	1.22
LO 16	1.39	LO 12	1.37	LO 38	1.36	LO 47	1.20	LO 15	1.20	LO 5	1.22
LO 22	1.37	LO 25	1.33	LO 10	1.36	LO 14	1.20	LO 49	1.20	LO 8	1.22
LO 10	1.35	LO 26	1.33	LO 13	1.36	LO 24	1.20	LO 31	1.20	LO 36	1.22
LO 17	1.35	LO 10	1.32	LO 16	1.35	LO 44	1.19	LO 41	1.19	LO 29	1.22
LO 20	1.34	LO 38	1.31	LO 22	1.35	LO 21	1.19	LO 42	1.19	LO 35	1.21
LO 26	1.33	LO 13	1.31	LO 30	1.34	LO 35	1.19	LO 18	1.19	LO 28	1.21
LO 23	1.32	LO 14	1.30	LO 7	1.33	LO 41	1.19	LO 35	1.19	LO 18	1.21
LO 11	1.32	LO 21	1.30	LO 21	1.32	LO 36	1.18	LO 6	1.18	LO 47	1.20
LO 12	1.31	LO 50	1.29	LO 37	1.31	LO 28	1.18	LO 9	1.18	LO 19	1.20
LO 38	1.29	LO 22	1.29	LO 11	1.31	LO 9	1.17	LO 48	1.18	LO 32	1.19
LO 37	1.29	LO 30	1.28	LO 24	1.30	LO 15	1.16	LO 2	1.18	LO 17	1.19
LO 13	1.28	LO 47	1.28	LO 20	1.30	LO 43	1.16	LO 36	1.18	LO 51	1.19
LO 7	1.28	LO 23	1.26	LO 12	1.29	LO 49	1.14	LO 39	1.17	LO 43	1.19
LO 29	1.28	LO 29	1.25	LO 14	1.28	LO 1	1.12	LO 32	1.15	LO 39	1.19
LO 25	1.28	LO 20	1.25	LO 50	1.28	LO 51	1.12	LO 34	1.15	LO 40	1.18
LO 50	1.28	LO 17	1.24	LO 31	1.27	LO 3	1.12	LO 43	1.15	LO 27	1.18
LO 6	1.27	LO 24	1.24	LO 34	1.26	LO 40	1.11	LO 5	1.12	LO 45	1.18
LO 5	1.26	LO 51	1.23	LO 33	1.26	LO 42	1.11	LO 44	1.12	LO 41	1.17
LO 19	1.25	LO 16	1.23	LO 49	1.26	LO 39	1.11	LO 40	1.12	LO 15	1.17
LO 4	1.25	LO 28	1.23	LO 48	1.26	LO 2	1.10	LO 1	1.12	LO 46	1.14
LO 34	1.24	LO 27	1.22	LO 2	1.25	LO 48	1.10	LO 3	1.10	LO 1	1.13
LO 8	1.21	LO 33	1.22	LO 25	1.25	LO 45	1.10	LO 46	1.10	LO 9	1.12
LO 18	1.21	LO 11	1.22	LO 6	1.24	LO 32	1.05	LO 4	1.05	LO 42	1.11
LO 31	1.21	LO 45	1.21	LO 23	1.24	LO 46	1.05	LO 19	1.04	LO 4	1.07
LO 33	1.20	LO 8	1.21	LO 44	1.23

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