A variation and selection of growth and wood traits for 10-year-old Schima superba

doi:10.3969/j.issn.1000-2006.202003086

JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2020, Vol. 44 ›› Issue (5): 85-92.doi: 10.3969/j.issn.1000-2006.202003086

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A variation and selection of growth and wood traits for 10-year-old Schima superba

WANG Yunpeng¹(), ZHANG Rui¹^,^*(), ZHOU Zhichun¹, HUA Bin², HUANG Shaohua², MA Lizhen², FAN Huihua³

1. Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Zhejiang Provincial Key Laboratory of Tree Breeding, Hangzhou 311400, China
2. Agriculture and Forestry Resources Protection Center of Fuyang District, Hangzhou, Hangzhou 311400,China
3. Forestry Technology Popularization Center of Jian’ou, Jian’ou 353100, China;
4. Fujian Academy of Forestry Sciences, Fuzhou 350012, China

Received:2020-03-30 Revised:2020-05-12 Online:2020-10-30 Published:2020-10-30
Contact: ZHANG Rui E-mail:wypcnsd@163.com;zhangruicaf@caf.ac.cn

Abstract

Abstract:

【Objective】 To analyze the genetic variation and correlation of growth and wood traits in 10-year-old Schima superba open-pollinated families and select families with excellent growth and wood traits that can provide quality material for high-generation breeding and improvement of S. superba. 【Method】The 113 open-pollinated families of S. superba plus trees established in Jian’ou of Fujian Province in 2008 were used as experimental materials. Genetic variation, genetic parameter estimation and the correlation analysis were carried out on tree height, diameter at breast height (DBH) and basic wood density. On this basis, families with high-quality growth and wood traits were selected. 【Result】 The tree height, DBH and basic wood density of the 10-year-old S. superba open-pollinated families showed significant differences among families. The basic wood density was greatly affected by genetic effects, while tree height and DBH were affected by genetic and environmental effects in addition to the genetic control. The differences in tree height and DBH between producing areas were highly significant, while the differences in basic wood density were not significant. The phenotype variation coefficient and genetic variation coefficient were followed by DBH (12.13%, 7.74%), tree height (8.28%, 3.58%), and basic wood density (2.82%, 1.92%), indicating a large variation between families in DBH and a small variation in basic wood density. The results of heritability estimation showed that the family heritability and the individual heritability were in the order of basic wood density (0.48, 0.42), DBH (0.44, 0.35) and tree height (0.32, 0.26), which were subject to moderate to strong genetic control. Phenotypic and genetic correlation results showed that there was a very significant positive correlation between tree height and DBH, while there was no correlation between growth traits and basic wood density. Therefore, growth traits and basic wood density could be independently selected. Thirteen families with excellent growth and wood traits were selected with the criteria of higher than 10% of the mean DBH and the average basic wood density. The average genetic gains of DBH and basic wood density were 6.99% and 1.18%, respectively, and the average real gains were 16.08% and 2.42%, respectively. 【Conclusion】 The tree height and DBH were affected by genetic and environmental interactions in addition to the genetic control, while the basic wood density was greatly affected by genetic effects. The DBH had strong variability, and the basic wood density was strongly controlled by genetics. Growth traits and basic wood density could be selected independently. Thirteen families with excellent growth and wood traits were selected.

Key words: Schima superba, growth trait, basic wood density, genetic variation, family selection

CLC Number:

S722.5

WANG Yunpeng, ZHANG Rui, ZHOU Zhichun, HUA Bin, HUANG Shaohua, MA Lizhen, FAN Huihua. A variation and selection of growth and wood traits for 10-year-old Schima superba[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY, 2020, 44(5): 85-92.

Figures/Tables 7

Table 1

Table 2

Fig.1

Table 3

Fig.2

Table 4

Table 5

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产地 location	编码 code	经度(E) longitude	纬度(N) latitude	海拔/m altitude
福建建瓯 Jian’ou, Fujian	JO	118°22'	26°57'	141
浙江龙泉 Longquan, Zhejiang	LQ	119°09'	28°05'	195
浙江庆元 Qingyuan, Zhejiang	QY	119°01'	27°36'	823
浙江遂昌 Suichang, Zhejiang	SC	119°14'	28°35'	274

试验组 group	性状 trait		均值 mean		标准差 standard deviation		变幅 variable amplitude			F
试验组 group	性状 trait		均值 mean		标准差 standard deviation		变幅 variable amplitude			区组 block	家系 family		区组×家系 block×family
1	H/m	8.08		0.57		7.06~9.25		97.42^**	5.98^**			3.58^**
	D/cm	7.58		0.97		5.80~10.13		110.88^**	7.70^**			2.58^**
	ρ_BD/(g·cm^-3)	0.558 8		0.015 6		0.526 4~0.595 6		9.42^**	2.38^**			0.80
2	H/m	8.23		0.87		5.944~9.80		506.47^**	5.96^**			6.11^**
	D/cm	8.07		1.10		5.52~10.33		57.72^**	4.07^**			3.18^**
	ρ_BD/(g·cm^-3)	0.558 1		0.017 5		0.523 6~0.590 8		7.70^**	1.86^**			1.19
3	H/m	8.73		0.63		7.34~9.87		267.70^**	4.37^**			2.97^**
	D/cm	8.11		0.81		6.66~9.70		39.74^**	3.93^**			2.44^**
	ρ_BD/(g·cm^-3)	0.560 1		0.014 1		0.533 8~0.589 7		8.00^**	2.35^**			1.40^*

试验组 group	性状 trait	产地 location				P
试验组 group	性状 trait	福建建瓯 Jian’ou, Fujian	浙江龙泉 Longquan, Zhejiang	浙江庆元 Qingyuan, Zhejiang	浙江遂昌 Suichang, Zhejiang	P
1	H/m	8.40±0.42	7.94±0.51	7.63±0.58	7.46±0.41	<0.001^**
	D/cm	7.99±0.88	7.70±0.57	7.46±0.40	6.20±0.30	<0.001^**
	ρ_BD/(g·cm^-3)	0.563 7±0.013 0	0.552 8±0.009 0	0.555 5±0.019 0	0.550 07±0.023 0	0.215
2	H/m	8.49±0.70	8.47±0.40	8.36±1.00	7.39±0.98	0.014^*
	D/cm	8.48±0.93	8.73±0.48	7.86±0.92	6.83±0.99	<0.001^**
	ρ_BD/(g·cm^-3)	0.557 5±0.016	0.557 4±0.023 0	0.569 4±0.006 0	0.551 5±0.020 0	0.311
3	H/m	8.78±0.67	8.78±0.38	8.46±0.63	—	0.471
	D/cm	8.14±0.84	8.15±0.80	7.93±0.77	—	0.832
	ρ_BD/(g·cm^-3)	0.562 1±0.015 0	0.550 4±0.010 0	0.562 0±0.013 0	—	0.138

试验组 group	性状 trait	H	D	ρ_BD
1	H		0.89^**	0.06
	D	0.63^**		-0.02
	ρ_BD	0.10	0.14
2	H		0.41^**	-0.16
	D	0.70^**		0.09
	ρ_BD	-0.18	-0.02
3	H		0.75^**	0.34
	D	0.61^**		0.14
	ρ_BD	-0.05	-0.02

试验组 group	序号 No.		家系号 family No.		D_DBH						ρ_BD
试验组 group	序号 No.		家系号 family No.		观测值/cm observation		遗传增益/% genetic gain		现实增益/% reality gain		观测值/ (g·cm^-3) observation		遗传增益/% genetic gain	现实增益/% reality gain
1	1	JO15		9.37		15.82		23.61		0.559 0		0.02		0.03
	2	JO11		8.56		8.66		12.93		0.567 0		0.97		1.47
	3	JO61		8.41		7.35		10.96		0.595 6		4.35		6.58
	均值 mean			8.78		10.61		15.84		0.573 9		1.78		2.69
2	1	JO5		10.33		7.53		27.89		0.5814		1.58		4.17
	2	LQ14		9.55		4.91		18.19		0.564 6		0.44		1.17
	3	QY22		9.50		4.75		17.57		0.572 1		0.95		2.50
	4	JO22		9.22		3.80		14.07		0.564 3		0.42		1.10
	5	LQ12		8.98		3.02		11.18		0.590 8		2.23		5.86
	均值 mean			9.52		4.80		17.78		0.574 6		1.12		2.96
试验组 group	序号 No.		家系号 family No.		D_DBH						ρ_BD
试验组 group	序号 No.		家系号 family No.		观测值/cm observation		遗传增益/% genetic gain		现实增益/% reality gain		观测值/ (g·cm^-3) observation		遗传增益/% genetic gain	现实增益/% reality gain
3	1	JO23		9.50		6.51		17.14		0.563 4		0.23		0.59
	2	JO27		9.40		6.04		15.91		0.569 8		0.69		1.73
	3	JO58		9.32		5.67		14.92		0.572 3		0.87		2.17
	4	JO16		9.31		5.63		14.81		0.571 3		0.80		1.99
	5	QY10		8.95		3.94		10.36		0.568 7		0.62		1.54
	均值 mean			9.30		5.56		14.63		0.569 1		0.64		1.60

A variation and selection of growth and wood traits for 10-year-old Schima superba

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