Growth variation and superior families early selection of Larix olgensis free-pollinated families

doi:10.12302/j.issn.1000-2006.202303014

JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2024, Vol. 48 ›› Issue (5): 81-89.doi: 10.12302/j.issn.1000-2006.202303014

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Growth variation and superior families early selection of Larix olgensis free-pollinated families

WANG Jiaxing(), YAN Pingyu, SUN Baifei, LIU Jinhong, FENG Kele, ZHANG Hanguo^*()

State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040, China

Received:2023-03-12 Revised:2023-04-16 Online:2024-09-30 Published:2024-10-03
Contact: ZHANG Hanguo E-mail:wjx0707@yeah.net;hanguozhang1@sina.com

Abstract

Abstract:

【Objective】 We investigated genetic variation and stability in growth characteristics across 40 free-pollinated families from four Larix olgensis seed orchards located in different regions, aiming to identify superior families. 【Method】 We analyzed progenies from four L. olgensis locations namely Hegang, Linkou, Yongji and Dagujia. The study involved single-point analysis of variance (ANOVA), multi-point multi-year ANOVA, genetic parameter analysis, stability analysis, and breeding value estimation on tree height and diameter at breast height (DBH) for trees aged 6-8 years to identify superior families. 【Result】 Single-point ANOVA results indicated significant differences in growth traits among families. Multi-point multi-year ANOVA revealed significant variations in the height of L. olgensis among families, locations, years, and their interactions. Genetic parameter analysis demonstrated that family heritability of height, ranging from 0.611 to 0.852 across sites, was greater than individual heritability, indicating strong genetic control. The phenotypic and genetic coefficients of variation at each site were 41.36% and 3.87%, respectively. Genetic gain in eight year height ranged from 23.35% to 38.89% at a 20% selection rate. Breeding value estimation identified high-yielding and stable families (CH309, CH349, HG5, BS349, and HG13) with an average breeding value of 0.528, an average height of 4.00 m (25.78% higher than that of the control), and an average stability parameter of 0.085, making them suitable for promotion in four locations. 【Conclusion】 L. olgensis exhibits rich genetic diversity in growth traits among families across different years and locations. The identified superior families are well-suited for cultivation in the three northeastern provinces and similar environments.

Key words: Larix olgensis, growth trait, genetic variation, stability analysis, superior family, early selection

CLC Number:

S722

WANG Jiaxing, YAN Pingyu, SUN Baifei, LIU Jinhong, FENG Kele, ZHANG Hanguo. Growth variation and superior families early selection of Larix olgensis free-pollinated families[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY, 2024, 48(5): 81-89.

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地点 site	林龄/a age	平均树高/m average height	变幅/m range	标准差 SD	F
地点 site	林龄/a age	平均树高/m average height	变幅/m range	标准差 SD	家系 family	区组 block	家系×区组 family×block
鹤岗 Hegang	6	1.119 0	0.32~2.13	0.358 62	20.619^**	0.873	3.251^**
	7	1.671 6	0.46~2.90	0.580 60	17.315^**	6.250^**	4.630^**
	8	2.226 4	0.55~3.92	0.809 47	14.363^**	3.002	4.433^**
林口 Linkou	7	2.271 7	0.54~4.57	0.822 88	8.688^**	12.012^**	2.811^**
	8	3.122 6	1.16~5.50	0.916 10	6.783^**	10.456^**	2.916^**
永吉 Yongji	6	1.938 5	0.63~3.52	0.597 46	4.838^**	1.566	2.184^**
	7	2.750 0	0.80~5.09	0.971 98	5.781^**	4.934^**	2.591^**
	8	3.689 3	1.39~6.30	1.154 21	6.704^**	3.976^*	2.989^**
大孤家 Dagujia	6	2.430 4	0.60~4.45	0.792 02	11.746^**	16.671^**	4.344^**
	7	3.409 5	0.90~6.00	1.041 26	13.518^**	11.043^**	4.327^**
	8	4.698 7	1.50~7.80	1.261 82	13.258^**	14.715^**	4.644^**

地点 site	林龄/a age	平均胸径/cm average DBH	变幅/cm range	标准差 SD	F
地点 site	林龄/a age	平均胸径/cm average DBH	变幅/cm range	标准差 SD	家系 family	区组 block	家系×区组 family×block
林口Linkou	8	2.410 2	0.1~8.7	1.050 6	7.307^**	9.825^**	2.701^**
永吉Yongji	8	3.267 1	0.2~8.6	1.516 1	5.189^**	11.473^**	2.411^**
大孤家Dagujia	8	4.391 0	0.2~13.7	1.743 6	17.624^**	17.077^**	3.693^**

来源source	SS	df	MS	F
家系family	94.150	39	2.414	20.003^**
地点site	1 562.779	3	520.926	4 316.397^**
年份year	98.768	2	49.384	409.194^**
地点×年份site×year	219.710	5	43.942	364.104^**
家系×地点family×site	322.782	117	2.759	22.86^**
家系×年份family×year	33.236	78	0.426	3.531^**
家系×地点×年份 family×site×year	65.280	195	0.335	2.774^**
误差error	2 961.622	24 540	0.121
总计total	35 613.982	24 980

变异来源 variation source	df	SS	SS占总体比例/%	MS	F	P
IPCA1	41	27.286 6	47.95	0.665 5	4.078 6	<0.01
IPCA2	39	20.579 4	36.16	0.527 7	3.233 8	<0.01
残差residual	37	9.044 4		0.244 4
误差error	320	52.216 1		0.163 2

家系 family	平均树高/ m average height	离差 deviation	IPCA1	IPCA2	稳定性参数 stability parameters	排名 rank
HG13	3.73	0.181 7	-0.017 8	-0.014 9	0.015	1
HG5	3.97	0.165 0	-0.069 5	-0.095 1	0.075	2
HG21	3.65	0.052 5	-0.113 2	-0.017 5	0.079	3
CH349	4.02	0.461 7	0.017 4	-0.136 6	0.083	4
CH9	2.82	-0.473 3	0.109 4	0.059 5	0.084	5
LK299	3.28	0.230 8	0.101 5	0.078 1	0.085	6
CH161	3.07	-0.260 8	0.134 9	-0.048 7	0.098	7
CH171	3.16	0.273 3	0.132 8	-0.056 3	0.098	8
……
LK122	3.64	0.123 3	0.180 5	0.601 8	0.383	36
NB181	3.99	0.105 8	0.487 6	0.305 8	0.384	37
NB124	3.08	0.210 8	0.168 2	0.625 3	0.394	38
CH4	4.16	0.018 3	0.386 4	-0.654 9	0.476	39
NB108	4.27	0.010 8	0.738 9	-0.115 9	0.516	40

Growth variation and superior families early selection of Larix olgensis free-pollinated families

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排名 rank	鹤岗Hegang		林口Linkou		永吉Yongji		大孤家Dagujia		综合选择 comprehensive selection
排名 rank	家系 family	育种值 breeding value	家系 family	育种值 breeding value	家系 family	育种值 breeding value	家系 family	育种值 breeding value	家系 family	育种值 breeding value
1	BS349	0.432	LK299	0.479	LK122	0.600	NB173	1.020	CH309	1.036
2	BS54	0.420	NB108	0.468	LK229	0.589	CH309	0.801	NB173	0.872
3	HG25	0.351	CH171	0.454	CH303	0.562	CH4	0.682	NB108	0.782
4	CH260	0.312	NB124	0.394	NB124	0.474	CH349	0.609	CH4	0.684
5	LK555	0.247	CH309	0.322	NB181	0.448	BS21	0.538	BS21	0.560
6	HG18	0.235	LK122	0.318	LK459	0.300	BS349	0.506	CH349	0.550
7	HG5	0.206	CH4	0.266	NB129	0.287	LK435	0.500	NB181	0.517
8	HG48	0.201	LK221	0.241	NB173	0.207	BS54	0.470	HG5	0.500
9	NB129	0.200	CH303	0.241	CH349	0.203	NB108	0.433	NB206	0.288
10	CH278	0.185	HG22	0.223	LK299	0.185	NB206	0.401	BS349	0.279
	……		……				……
36	CH161	-0.351	CH211	-0.373	CH9	-0.312	CH278	-0.623	CH139	-0.475
37	NB108	-0.403	CH139	-0.395	CH27	-0.367	LK221	-0.631	CH211	-0.498
38	LK286	-0.437	HG25	-0.425	CH278	-0.369	HG48	-0.640	HG28	-0.594
39	CH9	-0.456	HG18	-0.427	LK286	-0.489	CH139	-0.844	CH9	-0.605
40	NB206	-0.465	LK712	-0.494	CH4	-0.608	CH27	-1.034	CH27	-0.752

家系特点 family characteristic	家系 family	育种值 breeding value	平均树高/m average height	稳定性参数 stability parameter
高产稳产 high-yielding and stable	CH309	1.036	4.53	0.129
	CH349	0.550	4.02	0.083
	HG5	0.500	3.97	0.075
	BS349	0.279	3.74	0.125
	HG13	0.274	3.73	0.015
高产非稳产 high-yielding and non-stable	NB173	0.872	4.37	0.271
	NB108	0.782	4.27	0.516
	CH4	0.684	4.16	0.476
	BS21	0.560	4.03	0.241
	NB181	0.517	3.99	0.384