Genetic variation and juvenile selection of growth traits of Dalbergia tonkinensis Prain

doi:10.3969/j.issn.1000-2006.201906028

JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2020, Vol. 44 ›› Issue (1): 25-30.doi: 10.3969/j.issn.1000-2006.201906028

Special Issue: 红木类珍贵树种专题

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Genetic variation and juvenile selection of growth traits of Dalbergia tonkinensis Prain

HONG Zhou, YANG Zengjiang, ZHANG Ningnan, GUO Junyu, LIU Xiaojin, CUI Zhiyi, XU Daping^*()

Research Institute of Tropical Forestry, Chinese Academy of Forestry, Guangzhou 510520, China

Received:2019-06-19 Revised:2019-09-04 Online:2020-02-08 Published:2020-02-02
Contact: XU Daping E-mail:gzfsrd@163.com

Abstract

Abstract:

【Objective】 Dalbergia tonkinensis Prain, commonly known as Mai Dou Lai in Vietnam is a semi deciduous tree belonging to the genus Dalbergia, family Papilionoideae. The genetic variability and genetic-phenotypic correlations among growth traits were studied for screening the excellent genetic materials of D. tonkinensis at an juvenile stage. It helped the germplasm introduction of D. tonkinensis and the development of precious timber industry in Guangdong Province. 【Method】 The growth traits include tree height, diameter at breast height, diameter at ground height, crown, leaf chlorophyll SAPD value and leaf area were studied in the 4 years old, provenance/family testing trail in Baishengyuan, Yangjiang City, in west Guangdong Province. The genetic parameters were estimated for each trait using mixed linear model. Further, we selected the excellent provenances and families using exponential equation.【Result】 The average annual growth in height and ground diameter of D. tonkinensis was 1 m and 3 cm, respectively. The coefficient of variation of diameter (26.86%-40.41%) was higher than that of tree height (25.27%-26.35%). There were different phenotypic and genetic variations in the growth characters for D. tonkinensis. The phenotypic variation coefficient ranged from 10.81% (leaf chlorophyll SPAD value) to 36.97% (ground diameter 17). The genetic variation coefficient ranged from 4.20% (leaf chlorophyll SPAD value) to 10.95% (ground diameter 17). The coefficient of variation of tree height was consistent among all the characteristics at juvenile stage. The provenance repeatability, family and individual heritability were recorded as (0.45±0.19) to (0.81±0.06), (0.27±0.16) to (0.59±0.09) and (0.18±0.13) to (0.35±0.19), respectively. Highly significant positive genetic correlation was observed between growth characters (P < 0.01). Significant ( P < 0.05) or extremely significant genetic positive correlation ( P < 0.01) was observed between growth traits and leaf chlorophyll SPAD value and crown, except leaf area traits. Genetic correlation among leaf chlorophyll SPAD value, leaf area and crown were not observed. Based on phenotypic and genetic variation of growth traits, the early index selection of excellent provenances / families was carried out with tree height, DBH, ground diameter, leaf chlorophyll SPAD value, leaf area and crown diameter (measured in 2018). The provenance index coefficients of tree height, DBH, ground diameter, leaf chlorophyll SPAD, leaf area and crown diameter were 0.78, 0.54, 0.48, 0.11, 0.05 and 0.87, respectively. The average aggregation index of provenance was 17.62±1.88. Two excellent provenances (No.3 and No.8) were selected as their aggregation index of multiple traits was greater than the average value+1 standard deviation (mean+SD = 19.50). The average genetic gain of tree height, DBH and DBH for excellent provenances was 43.06%, 101.46% and 115.84%, respectively. Six excellent families were selected according to the index of family aggregation (11.81) constructed based on population mean values. The selection rate was 13.03%. The genetic gains of tree height, DBH, ground diameter, leaf chlorophyll SPAD value, leaf area and crown diameter of the selected population were 6.87%, 6.54%, 6.77%, 2.62%, 3.50% and 9.43%, respectively. 【Conclusion】 There are abundant provenance and family variations among the early growth characters for D. tonkinensis. The genetic control of growth and wood properties at provenance and families were observed above moderate intensity. The highly genetic variation of the introduced germplasm ofD. tonkinensis provided a basis for genetic breeding, and this can be further used for genetic improvement of D. tonkinensis.

Key words: Dalbergia tonkinensis Prain, genetic variation, provenance selection, family selection, juvenile selection

CLC Number:

S722.3⁺3

HONG Zhou, YANG Zengjiang, ZHANG Ningnan, GUO Junyu, LIU Xiaojin, CUI Zhiyi, XU Daping. Genetic variation and juvenile selection of growth traits of Dalbergia tonkinensis Prain[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY, 2020, 44(1): 25-30.

Figures/Tables 5

Table 1

Geographic location information of provenances and families of D.tonkinensis "

序号 No.	种源 provenance	家系号 family No.	经度(E)/ (°) longitude	纬度(N)/ (°) latitude	海拔 /m elevation
1	嘉莱Gia Lai	1~5	108.11	13.81	700~800
2	承天-顺化Hu $ê'$	6	107.56	16.45	3~5
3	义安Nghê An	7	104.92	19.23	30~45
4	清化Thanh Hóa	8~10	105.31	20.13	5~18
5	宁平Ninh Bình	11~14	105.92	20.21	15~66
6	河内Hung Yên	15~21	106.02	20.85	8~20
7	北宁Hà Nôi	22~23	105.83	21.03	5~20
8	兴安Bac Ninh	24~28	106.11	21.12	5~15
9	永福Vınh Phúc	29~36	105.55	21.36	15~30
10	凉山Lang Son	37~46	106.63	21.86	152~324

Table 1

Table 2

Table 3

Table 4

Table 5

References 25

[1]	中国科学院中国植物志委员会. 中国植物志全文电子版[M]. 北京: 科学出版社, 1994.
	China Flora Editorial Board, Chinese Academy of Sciences. Flora of China [M]. Beijing: Science Press, 1994.
[2]	麻永红. 东京黄檀种子生物学及幼苗生长变异研究[D]. 北京: 中国林业科学研究院, 2016.
	MA Y H. Variation in seed biological traits and early seedling growth of Dalbergia tonkinensis prain [D]. Beijing: Chinese Academy of Forestry, 2016.
[3]	吴师强, 李大周, 陆文, 等. 越南黄花梨形态特性及引种植物名称研究初报[J]. 热带林业, 2013, 41(3):25-26.
	WU S Q, LI D Z, LU W, et al. Dalbergia spp.morphological characteristics and introduction botanical name research preliminary report [J]. Tropical Forestry, 2013, 41(3):25-26. DOI: 10.3969/j.issn.1672-0938.2013.03.009. doi: 10.3969/j.issn.1672-0938.2013.03.009
[4]	SON N T, YAMAMOTO T, FUKUYAMA Y. Chemotaxonomic aspects of the constituents of the plant Dalbergia tonkinensis[J]. Biochemical Systematics and Ecology, 2018, 78:98-101. DOI: 10.1016/j.bse.2018.04.009. doi: 10.1016/j.bse.2018.04.009
[5]	张礼行, 周丹水, 郭聪颖, 等. 基于GC-MS技术对降香黄檀与其他黄檀属植物挥发油成分的鉴别分析[J]. 广东药科大学学报, 2018, 34(5):579-585.
	ZHANG L H, ZHOU D S, GUO C Y, et al. Identification and analysis of the volatile oil from Dalbergia odorifera T. Chen and other plants in Dalbergia genus by GC-MS [J]. Journal of Guangdong Pharmaceutical University, 2018, 34(5):579-585. DOI: 10.16809/j.cnki.2096-3653.2018070101. doi: 10.16809/j.cnki.2096-3653.2018070101
[6]	WRIGHT J W. Introduction to forest genetics[M]. New York: Academic Press, 1976: 427-438.
[7]	杨秀艳, 季孔庶. 林木育种中的早期选择[J]. 世界林业研究, 2014, 17(2):6-8.
	YANG X Y, JI K S. Early selection in forest tree improvement[J]. World Forestry Research, 2004, 17(2):6-8.
[8]	何霞, 李景剑, 王芳, 等. 苦楝种源/家系幼林的性状变异及选择[J]. 东北林业大学学报, 2019, 47(6):1-7.
	HE X, LI J J, WANG F, et al. Variation and Selection of Melia azedarach provenances and families[J]. Journal of Northeast Forestry University, 2019, 47(6):1-7. DOI: 10.3969/j.issn.1000-5382.2019.06.001. doi: 10.3969/j.issn.1000-5382.2019.06.001
[9]	程林林, 尹光天, 黄雨芹, 等. 闽楠种源家系种质早期生长评估及选择[J]. 分子植物育种, 2018, 16(15):5108-5116.
	CHEN L L, YIN G T, HUANG Y Q, et al. Early growth evaluation and selection of germplasm resources of Phoebe bournei provenances/families [J]. Molecular Plant Breeding, 2018, 16(15):5108-5116. DOI: 10.13271/j.mpb.016.005108. doi: 10.13271/j.mpb.016.005108
[10]	王婧, 李培, 陈晓阳, 等. 黄樟种源、家系早期生长性状变异与初步选择[J]. 中南林业科技大学学报, 2018, 38(2):57-63.
	WANG J, LI P, CHEN X Y, et al. Growth traits variation analysis and preliminary selection of Cinnamomum porrectum seedling of different provenances and families [J]. Journal of Central South University of Forestry & Technology, 2018, 38(2):57-63. DOI: 10.14067/j.cnki.1673-923x.2018.02.009. doi: 10.14067/j.cnki.1673-923x.2018.02.009
[11]	朱报著, 张卫华, 张方秋, 等. 土沉香早期生长性状遗传变异及选择[J]. 中国野生植物资源, 2017, 36(4):24-28.
	ZHU B Z, ZHANG W H, ZHANG F Q, et al. Genetic variation and early selection of growth traits in Aquilaria sinensis families [J]. Chinese Wild Plant Resources, 2017, 36(4):24-28. DOI: 10.3969/j.issn.1006-9690.2017.04.006. doi: 10.3969/j.issn.1006-9690.2017.04.006
[12]	陈美红, 刘小金, 徐大平, 等. 越南黄花梨育苗技术[J]. 林业实用技术 2014(7):33-34.
	CHEN M H, LIU X J, XU D P, et al. Seedling technology of Dalbergia tonkinensis Prain [J]. Practical Forestry Technology, 2014(7):33-34. DOI: 10.13456/j.cnki.lykt.2014.07.011. doi: 10.13456/j.cnki.lykt.2014.07.011
[13]	刘小金, 徐大平, 杨曾奖, 等. 温度对越南黄花梨种子萌发的影响[J]. 林业科学研究, 2014, 27(5):707-709.
	LIU X J, XU D P, YANG Z J, et al. Effects of temperature on seed germination of Dalbergia tonkinensis [J]. Forest Research, 2014, 27(5):707-709. DOI: 10.13275/j.cnki.lykxyj.2014.05.022. doi: 10.13275/j.cnki.lykxyj.2014.05.022
[14]	李桂兰, 徐峰, 罗建举, 等. 海南香枝木与越南香枝木木材构造特征比较解剖研究[J]. 广西农业生物科学, 2008, 27(2):154-157.
	LI G L, XU F, LUO J J, et al. Comparative anatomical research on the wood structure between Dalbergia odorifera T. Chen and D.rimosa Roxb [J]. Journal of Guangxi Agricultural and Biological Science, 2008, 27(2):154-157.
[15]	罗真付, 张雪峰, 潘彪, 等. 越南香枝木解剖构造及物理力学性能研究[J]. 安徽农业大学学报, 2012, 39(4):493-496.
	LUO Z F, ZHANG X F, PAN B, et al. Anatomy structure and physical and mechanical properties of Dalbergia tonkinensis [J]. Journal of Anhui Agricultural University, 2012, 39(4):493-496. DOI: 10.13610/j.cnki.1672-352x.2012.04.025. doi: 10.13610/j.cnki.1672-352x.2012.04.025
[16]	GILMOUR A, GOGEL B, CULLIS B. ASReml user guide release 3.0[M]. Hemel Hempstead, UK: VSN International Ltd, 2009.
[17]	林元震, 陈晓阳. R与ASReml-R统计分析教程[M]. 北京: 中国林业出版社, 2014.
[18]	洪舟, 刘福妹, 杨曾奖, 等. 5个泰国种源大果紫檀的早期生长及材性分析[J]. 南京林业大学学报(自然科学版), 2019, 43(2):161-167.
	HONG Z, LIU F M, YANG Z J, et al. Early stage analysis on growth and wood properties of five provenances for Pterocarpus macrocarpus from Thailand [J]. Journal of Nanjing Forestry University(Natural Sciences Edition), 2019, 43(2):161-167. DOI: 10.3969/j.issn.1000-2006.201811004. doi: 10.3969/j.issn.1000-2006.201811004
[19]	洪舟, 刘福妹, 张宁南, 等. 降香黄檀生长性状家系间变异与优良家系初选[J]. 南京林业大学学报(自然科学版), 2018, 42(4):106-112.
	HONG Z, LIU F M, ZHANG N N, et al. Growth traits variation among families and preliminary selection of superior families in Dalbergia odorifera T. Chen [J]. Journal of Nanjing Forestry University(Natural Science Edition), 2018, 42(4):106-112. DOI: 10.3969/j.issn.1000-2006.201711017. doi: 10.3969/j.issn.1000-2006.201711017
[20]	CORMACK R M, HARTL D L, CLARK A G. Principles of population genetics[J]. Biometrics, 1990, 46(2):546. DOI: 10.2307/2531471.https://doi.org/10.2307/2531471. doi: 10.2307/2531471.https://doi.org/10.2307/2531471
[21]	王亚南, 王军辉, 麻文俊, 等. 34年生华山松生长和材性的种源变异与种源选择[J]. 东北林业大学学报, 2013, 41(12):5-7, 12.
	WANG Y N, WANG J H, MA W J, et al. Provenance variation and selection in growth and wood quality of 34-year Pinus armandi franch [J]. Journal of Northeast Forestry University, 2013, 41(12):5-7, 12. DOI: 10.3969/j.issn.1000-5382.2013.12.002. doi: 10.3969/j.issn.1000-5382.2013.12.002
[22]	马育华. 植物育种的数量遗传学基础[M]. 南京: 江苏科学技术出版社, 1982.
	MA Y H. Quantitative genetic basis of plant breeding[M]. Nanjing: Jiangsu Science and Technology Press, 1982.
[23]	WEIR B S, THOMPSON J N, THODAY J M. Quantitative genetic variation[J]. Biometrics, 1980, 36(3):561. DOI: 10.2307/2530231.https://doi.org/10.2307/2530231. doi: 10.2307/2530231.https://doi.org/10.2307/2530231
[24]	王丽波. 选择指数的决策分析[D]. 杨凌: 西北农林科技大学, 2006.
	WANG L B. Decision analysis on selection index[D]. Yangling: Northwest A & F University, 2006.
[25]	孙晓梅, 张守攻, 王卫东, 等. 日本落叶松自由授粉家系形质性状遗传变异的研究[J]. 北京林业大学学报, 2004, 26(3):41-45.
	SUN X M, ZHANG S G, WANG W D, et al. Genetic variation of stem-form qualities of Larix kaempferi open-pollinated families [J]. Journal of Beijing Forestry University, 2004, 26(3):41-45. DOI: 10.3321/j.issn:1000-1522.2004.03.008. doi: 10.3321/j.issn:1000-1522.2004.03.008

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性状 traits	平均值±标准误差 mean±SE	变异系数 coefficient of variation	方差来源 source of variation
性状 traits	平均值±标准误差 mean±SE	变异系数 coefficient of variation	区组 block	种源 provenances	家系 family
树高(2016)/m tree height	1.93±0.02	25.38	11.08^**	8.11^***	2.15^**
树高(2017)/m tree height	2.73±0.03	25.27	16.64^**	19.84^**	2.41^**
地径(2017)/cm diameter at ground height	2.87±0.05	40.41	17.83^**	20.34^**	2.89^**
树高(2018)/m tree height	3.87±0.05	26.35	21.18^**	22.11^**	2.62^**
胸径(2018)/cm diameter at breast height	4.54±0.06	31.27	17.46^**	25.13^**	2.79^**
地径(2018)/cm diameter at ground height	6.03±0.07	26.86	12.09^**	25.39^**	2.41^**
叶片叶绿素SPAD值(2018) SPAD	51.80±0.26	11.15	4.57^**	3.42^**	3.88^**
叶面积(2018)/cm² leaf area	32.35±0.38	26.08	2.97^*	2.49^**	1.71^**
冠幅(2018)/m crown	2.31±0.04	37.22	25.32^**	25.26^**	3.54^**

性状 traits	表型变异系数/% phenotypic variation coefficients	遗传变异系数/% genetic variation coefficients	种源重复力 provenance repeatability	家系遗传力 family heritability	单株遗传力 individual heritability
树高(2016) tree height	25.34	7.02	0.53±0.16	0.37±0.14	0.30±0.16
树高(2017) tree height	23.25	5.74	0.72±0.10	0.28±0.16	0.24±0.17
地径(2017) diameter at ground height	36.97	10.95	0.71±0.10	0.37±0.14	0.35±0.19
树高(2018) tree height	23.16	6.23	0.81±0.06	0.35±0.14	0.28±0.17
胸径(2018) diameter at breast height	28.22	6.46	0.77±0.08	0.27±0.16	0.20±0.16
地径(2018) diameter at ground height	24.62	5.88	0.79±0.07	0.30±0.16	0.22±0.15
叶片叶绿素SPAD值(2018) SPAD	10.81	4.20	0.60±0.13	0.59±0.09	0.30±0.18
叶面积(2018) leaf area	25.15	5.46	0.45±0.19	0.30±0.16	0.18±0.13
冠幅(2018) crown	32.27	9.33	0.74±0.08	0.36±0.14	0.33±0.18

性状 traits	树高(2016) tree height	树高(2017) tree height	地径(2017) diameter at ground height	树高(2018) tree height	胸径(2018) diameter at breast height	地径(2018) diameter at ground height	叶片叶绿素 SPAD值(2018) SPAD	叶面积(2018) leaf area
树高(2017) tree height	0.946±0.053^**
地径(2017) diameter at ground height	0.971±0.050^**	0.993±0.026^**
树高(2018) tree height	0.924±0.102^**	0.989±0.077^**	0.992±0.071^**
胸径(2018) diameter at breast height	0.966±0.103^**	0.987±0.081^**	0.995±0.073^**	0.988±0.038^**
地径(2018) diameter at ground height	0.938±0.109^**	0.985±0.093^**	0.993±0.078^**	0.994±0.052^**	0.997±0.022^**
叶片叶绿素SPAD值(2018) SPAD	0.475±0.197^**	0.438±0.204^*	0.483±0.188^**	0.665±0.175^**	0.635±0.187^**	0.666±0.188^**
叶面积(2018) leaf area	0.116±0.292	0.159±0.290	0.189±0.277	0.287±0.286	0.274±0.296	0.408±0.289	0.390±0.249
冠幅(2018) crown	0.746±0.131^**	0.858±0.084^**	0.859±0.076^**	0.992±0.081^**	0.986±0.081^**	0.991±0.092^**	0.339±0.210	0.021±0.289

类别 type	种源号 provenance No.	家系号 family No.	聚合指数 I	树高 tree height	胸径 diameter at breast height	地径 diameter at ground height	叶片叶绿素 SPAD值 SPAD	叶面积 leaf area	冠幅 crown
种源选择 provenance selection	3		20.61	46.65	105.25	112.13	502.21	915.58	49.5
	8		20.06	39.47	97.67	119.54	526.19	886.66	27.84
	入选平均值 mean			43.06	101.46	115.84	514.2	901.12	38.67
家系选择 family selection	8	25	12.73	8.82	10.15	10.08	4.53	0.68	15.57
	8	28	12.41	7.00	3.70	6.72	5.91	9.34	1.75
	3	7	12.09	8.91	7.76	5.55	0.69	4.15	16.21
	8	24	11.94	5.64	7.64	6.67	0.36	5.27	5.72
	1	2	11.94	8.11	5.19	7.38	1.05	0.22	8.89
	6	16	11.83	2.73	4.78	4.23	3.21	1.35	8.42
	入选平均值 mean			6.87	6.54	6.77	2.62	3.50	9.43

Genetic variation and juvenile selection of growth traits of Dalbergia tonkinensis Prain

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