Coupling Evaluation of Growth and Wood Properties of Pinus koraiensis Half-sib Families

doi:10.7525/j.issn.1673-5102.2024.04.008

Abstract

Abstract:

Pinus koraiensis is an important tree species used as fruit in northeast China， but due to its long growth cycle， its genetic improvement progress is slow. In order to evaluate and screen the elite P. koraiensis germplasm resources， 36 half-sib families of 20-year-old P. koraiensis from Xiyang forest seed orchard in Jilin Province were used as materials， and the growth traits and wood properties of different families were investigated. The results of variance analysis showed that the differences of each trait among families reached extremely significant level（P<0.01）， and the phenotypic variation coefficients of different investigated traits was 5.89%~45.21%. Except trait straightness（0.46）， the family heritabilities of other traits exceeded 0.5， which all belonged to high heritability. Correlation analysis results showed that the growth traits such as tree height and diameter at breast height had significantly positive correlations（r>0.663）. The contents of hemicellulose， cellulose and holocellulose were significantly correlated with each other among wood traits， while only cellulose and holocellulose were negatively correlated with some growth traits among growth traits and wood properties. The results of principal component analysis showed that 14 traits constituted five principal components， and the cumulative contribution rate was 79.24%. The comprehensive evaluation method was used to evaluate 36 half-sib families， with an admission rate of 10%， three elite families（PK61， PK29 and PK22） were selected according to their growth traits， and the genetic gain of each growth trait ranged from 6.41%- 33.91%. According to wood properties， three elite families（PK16， PK78 and PK10） were preliminarily screened， and the genetic gain of each wood trait ranged from 1.08%-6.72%. Combined with growth and wood properties， three excellent families（PK61， PK29 and PK44） were selected， and the genetic gain of each index ranged from 0.27%-37.28%. The elite families selected in this study can provide the basis for the selection of improved varieties of P. koraiensis.

Key words: Pinus koraiensis, growth trait, wood property, heritable variation, evaluation and selection

CLC Number:

S791.247

Xuelai WANG, Xiaoting LIU, Liran WANG, Shitong LI, Taijin ZHANG, Jiafeng ZHANG, Jinghua XU, Guanzheng QU, Xiyang ZHAO. Coupling Evaluation of Growth and Wood Properties of Pinus koraiensis Half-sib Families[J]. Bulletin of Botanical Research, 2024, 44(4): 554-564.

Figures/Tables 6

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子代来源 Progeny source	编号 Number
35个半同胞家系 35 Half-sib families	PK10	PK12	PK16	PK17	PK18	PK22	PK25
	PK27	PK28	PK29	PK31	PK32	PK34	PK35
	PK36	PK37	PK43	PK44	PK45	PK51	PK61
	PK63	PK64	PK66	PK68	PK70	PK71	PK73
	PK74	PK75	PK76	PK78	PK81	PK82	PK84
对照CK	PK1

性状 Trait	变异来源 Variance source	自由度 df	均方 Mean square	F	P
树高H	区组Block	2	42.149 7	138.069	<0.001
	家系Families	35	2.204 6	7.222	<0.001
	区组×家系Blocks×Families	70	1.684 7	5.519	<0.001
胸径D_BH	区组Block	2	11.561 3	4.104	0.017
	家系Families	35	20.872 2	7.409	<0.001
	区组×家系Blocks×Families	70	13.948 5	4.951	<0.001
2 m径 D₂	区组Block	2	15.605 9	5.882	0.003
	家系Families	35	18.618 8	7.017	<0.001
	区组×家系Blocks×Families	70	12.904 2	4.864	<0.001
材积V	区组Block	2	0.001 2	10.464	<0.001
	家系Families	35	0.000 9	7.465	<0.001
	区组×家系Blocks×Families	70	0.000 5	4.289	<0.001
分枝角B_A	区组Block	2	770.799 0	11.596	<0.001
	家系Families	35	257.327 5	3.871	<0.001
	区组×家系Blocks×Families	70	171.152 2	2.575	<0.001
通直度S_S	区组Block	2	0.413 1	3.073	0.048
	家系Families	35	0.247 3	1.840	0.004
	区组×家系Blocks×Families	70	0.139 8	1.040	0.401
木材密度W_D	家系Families	35	0.007 0	1.988	0.001
纤维长F_L	家系Families	35	423 655.133 0	9.466	<0.001
纤维宽F_W	家系Families	35	162.764 0	6.155	<0.001
纤维长宽比L_WR	家系Families	35	809.903 0	5.827	<0.001
半纤维素H_EC	家系Families	35	7.225 0	3.680	<0.001
纤维素C_C	家系Families	35	30.968 0	5.712	<0.001
综纤维素H_OC	家系Families	35	25.187 0	3.993	<0.001
木质素L_C	家系Families	35	8.733 0	2.123	<0.001

性状 Trait	平均值 Average value	变幅 Range	标准差 Standard deviation	表型变异系数 P_CV/%	家系遗传力 h²
树高H/m	5.97	5.07~6.76	0.94	15.69	0.86
胸径D_BH/cm	11.76	9.71~15.11	2.48	21.05	0.87
2 m径 D₂/cm	10.82	8.94~14.00	2.38	22.02	0.86
材积V/m³	0.03	0.02~0.06	0.02	45.21	0.87
通直度S_S	4.05	3.83~4.58	0.38	9.43	0.46
分枝角B_A/（°）	68.36	57.12~74.38	10.11	14.79	0.74
木材密度W_D/（g·cm^-3）	0.54	0.47~0.61	0.06	11.98	0.50
纤维长F_L/μm	1 211.26	1 045.74~1 368.24	219.45	18.12	0.89
纤维宽F_W/μm	25.70	22.88~29.01	5.26	20.47	0.84
纤维长宽比L_WR	48.77	44.18~55.35	12.04	24.69	0.83
半纤维素H_EC/%	15.31	13.52~17.21	1.59	10.36	0.73
纤维素C_C/%	38.80	34.17~41.93	2.84	7.31	0.82
综纤维素H_OC/%	54.11	48.69~56.52	2.87	5.30	0.75
木质素L_C/%	36.30	33.80~38.46	2.14	5.89	0.53

性状 Trait	树高 H	胸径 D_BH	2 m径 D₂	材积 V	通直度 S_S	分枝角 B_A	木材密度 W_D	纤维长 F_L	纤维宽 F_W	纤维长宽比 L_WR	半纤维素 H_EC	纤维素 C_C	综纤维素 H_OC
胸径D_BH	0.649^**
2 m径 D₂	0.663^**	0.985^**
材积V	0.708^**	0.979^**	0.975^**
通直度S_S	0.202^*	0.127	0.149	0.142
分枝角B_A	-0.070	-0.043	-0.068	-0.085	0.126
木材密度W_D	0.070	0.053	0.046	0.025	0.107	0.058
纤维长F_L	0.135	0.110	0.112	0.140	-0.004	0.002	-0.101
纤维宽F_W	0.058	0.056	0.056	0.080	-0.131	-0.100	-0.090	0.431^**
纤维长宽L_WR	0.077	0.030	0.034	0.047	0.106	0.087	-0.040	0.658^**	-0.391^**
半纤维素H_EC	0.080	0.051	0.061	0.067	-0.007	0.027	0.016	-0.111	-0.052	-0.076
纤维素C_C	-0.186^*	-0.216^**	-0.214^**	-0.206^*	-0.090	-0.078	-0.059	0.086	0.054	0.051	-0.347^**
综纤维素H_OC	-0.152	-0.198^*	-0.192^*	-0.180^*	-0.098	-0.067	-0.053	0.034	0.030	0.015	0.179^*	0.861^**
木质素L_C	-0.065	0.117	0.109	0.122	-0.072	0.052	0.066	-0.052	-0.040	-0.026	0.343^**	-0.095	0.086

主要成分因子 Principal component factor	主成分Ⅰ Principal component Ⅰ	主成分Ⅱ Principal component Ⅱ	主成分Ⅲ Principal component Ⅲ	主成分Ⅳ Principal component Ⅳ	主成分Ⅴ Principal component Ⅴ
特征值 Eigenvalue	4.123	2.601	1.909	1.312	1.149
贡献率 Contribution rate	29.450	18.578	13.632	9.370	8.205
累计贡献率 Cumulative contribution rate	29.405	48.028	61.660	71.030	79.235
树高H	0.829	0.214	-0.007	-0.107	0.129
胸径D_BH	0.885	0.410	0.023	0.058	-0.028
2 m径 D₂	0.887	0.413	0.029	0.054	-0.020
材积V	0.894	0.409	0.029	0.050	-0.016
通直度S_S	0.320	-0.149	0.139	-0.438	0.703
分枝角B_A	0.081	-0.297	0.307	0.463	0.432
木材密度W_D	0.431	-0.124	0.419	-0.072	-0.531
纤维长F_L	-0.322	0.780	0.144	0.093	0.163
纤维宽F_W	-0.102	0.439	-0.665	0.504	0.109
纤维长宽比L_WR	-0.308	0.338	0.733	-0.357	0.072
半纤维素H_EC	0.142	-0.315	0.425	0.513	0.248
纤维素C_C	-0.538	0.727	0.026	-0.123	-0.015
综纤维素H_OC	-0.501	0.615	0.238	0.125	0.107
木质素L_C	-0.061	0.045	0.626	0.443	-0.225