不同鲜重秋茄胚轴形态及其对幼苗生长的影响

doi:10.11978/2021127

热带海洋学报 ›› 2022, Vol. 41 ›› Issue (6): 56-66.doi: 10.11978/2021127CSTR: 32234.14.2021127

不同鲜重秋茄胚轴形态及其对幼苗生长的影响

刘双双¹^,²(), 杨升², 刘星², 陈秋夏²(), 王金旺², 郭晋敏¹^,², 王佳玉², 王文卿³, 吴伟志⁴^,⁵, 梁立成⁵, 张小伟⁴^,⁵

1.浙江农林大学林业与生物技术学院, 浙江杭州 311300
2.浙江省亚热带作物研究所, 浙江温州 325005
3.厦门大学环境与生态学院, 福建厦门 361102
4.浙江省森林资源监测中心, 浙江杭州 310020
5.浙江省林业勘测规划设计有限公司, 浙江杭州 310020

收稿日期:2021-09-19 修回日期:2021-12-22 出版日期:2022-11-10 发布日期:2021-12-27
通讯作者: 陈秋夏
作者简介:刘双双(1998—), 女, 山东省聊城市人, 硕士研究生, 从事红树植物秋茄宜林地研究。email: liushuangshuang202@163.com
基金资助:
科技部科技基础资源调查专项(2017FY100701);浙江省农业(林木)新品种选育重大科技专项(2016C02056-9)

Morphological characteristics of hypocotyls with different fresh weights of Kandelia obovata and their effects on the seedling growth

LIU Shuangshuang¹^,²(), YANG Sheng², LIU Xing², CHEN Qiuxia²(), WANG Jinwang², GUO Jinmin¹^,², WANG Jiayu², WANG Wenqing³, WU Weizhi⁴^,⁵, LIANG Licheng⁵, ZHANG Xiaowei⁴^,⁵

1. College of Forestry and Biotechnology, Zhejiang Agricultural and Forestry University, Hangzhou 311300, China
2. Zhejiang Institute of Subtropical Crops, Wenzhou 325005, China
3. College of the Environment and Ecology, Xiamen University, Xiamen 361102, China
4. Zhejiang Forest Resources Monitoring Center, Hangzhou 310020, China
5. Zhejiang Forestry Survey planning and Design Co., Ltd., Hangzhou 310020, China

Received:2021-09-19 Revised:2021-12-22 Online:2022-11-10 Published:2021-12-27
Contact: CHEN Qiuxia
Supported by:
Programs of Science and Technology on Basic Resources Survey for the Ministry of Science and Technology of China(2017FY100701);Zhejiang Science and Technology Major Program on Agricultural New Variety Breeding(2016C02056-9)

摘要/Abstract

摘要：

为了探讨不同鲜重秋茄胚轴的表型性状和营养成分含量差异, 及其对幼苗生长的影响, 确定浙江省秋茄胚轴质量标准, 提高造林质量, 本研究采集4.0~5.0g、5.0~6.0g、6.0~7.0g、7.0~8.0g、8.0~9.0g、9.0~10.0g共6组不同鲜重的秋茄胚轴, 测定其表型性状、营养成分含量和幼苗生长性状。结果表明, 胚轴长度、横径、顶径随着胚轴鲜重的增加而显著增加。不同鲜重等级胚轴间的氮(N)、磷(P)、钾(K)和有机碳百分含量差异不显著, 但随着秋茄胚轴鲜重增加, 淀粉百分含量显著减小。单根胚轴的营养成分总含量随胚轴鲜重的增加而显著增加。胚轴的C:N、N:P和C:P值在鲜重7.0~8.0g等级时均显著高于其他鲜重等级。幼苗生长高、基径、叶片数及生物量随胚轴鲜重的增加而显著增加, 但在5.0~6.0g、6.0~7.0g和7.0~8.0g等级间幼苗茎干重、叶干重、净生物量和总生物量差异不显著。胚轴表型性状与幼苗生长指标之间的相关性均呈显著水平(P<0.05), 除胚轴P总含量与生长高之间的相关性不显著外, N、K、Na、有机碳、淀粉总含量与幼苗生长指标之间均呈显著正相关关系(P<0.05)。主成分分析和综合评价结果表明鲜重7.0g以上的胚轴优于其他鲜重的胚轴。秋茄幼苗生长高和净生物量与胚轴鲜重的回归分析R²分别为0.978和0.951, P均小于0.01。胚轴鲜重大于5.22g时, 幼苗生长高急剧增加; 鲜重大于8.74g时, 幼苗净生物量增长加快。因此, 秋茄胚轴鲜重越大, 营养物质含量越高, 越有利于幼苗生长。在浙江省的秋茄林种植中, 应优先选择鲜重7.0g以上的胚轴。

关键词: 秋茄, 胚轴鲜重, 表型性状, 营养成分, 幼苗生长

Abstract:

In order to explore the phenotypic traits and nutrient contents of different fresh weights of Kandelia obovata hypocotyls and their effects on the growth of seedlings, and to determine the quality standard of hypocotyls in Zhejiang Province and improve the quality of forestation, we collected 6 groups of hypocotyls with different fresh weights (4.0~5.0g, 5.0~6.0g, 6.0~7.0g, 7.0~8.0g, 8.0~9.0g, 9.0~10.0g) to determine their phenotypic traits, nutrient contents and growth characteristics of seedlings. The results showed that the hypocotyl length, transverse diameter, and apical diameter increased significantly with the increase of fresh weight of hypocotyls. The percentage content of nitrogen (N), phosphorus (P), potassium (K), and organic carbon in the hypocotyl were not significantly different among the hypocotyls of different fresh weight, but with the increase of fresh weight of hypocotyls, the percentage content of starch decreased significantly. The total nutrient content in a single hypocotyl increased significantly with the increase of fresh weight of hypocotyls. The values of C:N, N:P and C:P of hypocotyl in fresh weight grade 7.0~8.0 were significantly higher than those in other fresh weight grades. The growth height, basal diameter, leaf number and biomass of seedlings increased significantly with the increase of fresh weight of hypocotyls, but between 5.0~6.0, 6.0~7.0 and 7.0~8.0, the stem biomass, leaf biomass, net biomass and the total biomass of seedlings are not significant. The correlation between hypocotyl phenotypic traits and seedling growth indicators was significant (P < 0.05). Except that the correlation between total P content and growth height was not significant, there was a significant positive correlation between the total N, K, Na, organic carbon, starch content and the growth indicators of seedlings (P < 0.05). The results of principal component analysis and comprehensive evaluation showed that the hypocotyls with fresh weight above 7.0g were better than those of other fresh weights. The regression analysis R² of growth height, net biomass and hypocotyl fresh weight of K. obovata seedlings were 0.978 and 0.951, respectively, with P < 0.01. When the hypocotyl fresh weight was higher than 5.22g, the growth height of seedlings increased sharply. When the hypocotyl fresh weight was higher than 8.74g, the growth of net biomass of seedlings accelerated. The higher the fresh weight of the hypocotyls of K. obovata, the higher the nutrient content, the more conducive to the growth of seedlings. In the planting of K. obovata in Zhejiang Province, hypocotyls with fresh weight above 7.0g should be selected with priority.

Key words: Kandelia obovata, hypocotyl fresh weight, phenotypic trait, nutrient content, seedling growth

中图分类号:

Q945

刘双双, 杨升, 刘星, 陈秋夏, 王金旺, 郭晋敏, 王佳玉, 王文卿, 吴伟志, 梁立成, 张小伟. 不同鲜重秋茄胚轴形态及其对幼苗生长的影响[J]. 热带海洋学报, 2022, 41(6): 56-66.

LIU Shuangshuang, YANG Sheng, LIU Xing, CHEN Qiuxia, WANG Jinwang, GUO Jinmin, WANG Jiayu, WANG Wenqing, WU Weizhi, LIANG Licheng, ZHANG Xiaowei. Morphological characteristics of hypocotyls with different fresh weights of Kandelia obovata and their effects on the seedling growth[J]. Journal of Tropical Oceanography, 2022, 41(6): 56-66.

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胚轴鲜重等级	鲜重/g	长度/cm	横径/mm	顶径/mm	干重/g
4.0~5.0g	4.46±0.04^a	13.94±0.12^a	8.69±0.09^a	4.69±0.03^a	1.66±0.03^a
5.0~6.0g	5.48±0.04^b	14.75±0.16^b	9.42±0.08^b	4.96±0.03^b	2.15±0.04^b
6.0~7.0g	6.48±0.04^c	15.13±0.14^b	10.37±0.07^c	5.14±0.03^c	2.53±0.03^c
7.0~8.0g	7.43±0.04^d	15.76±0.17^c	10.79±0.08^d	5.43±0.04^d	2.91±0.03^d
8.0~9.0g	8.47±0.04^e	16.69±0.18^d	11.31±0.09^e	5.49±0.06^d	3.37±0.05^e
9.0~10.0g	9.45±0.04^f	16.49±0.18^d	12.02±0.08^f	5.82±0.04^e	3.96±0.04^f

胚轴鲜重等级	N含量/%	P含量/%	K含量/%	Na含量/(mg·g^-1)	有机碳含量/%	淀粉含量/(mg·g^-1)
4.0~5.0g	0.79±0.02^c	0.08±0.00^d	0.70±0.66^c	5.65±0.01^d	42.86±0.44^ab	332.51±11.99^bc
5.0~6.0g	0.80±0.01^c	0.07±0.00^bc	0.66±0.64^b	5.93±0.02^e	47.53±0.77^bc	341.77±4.85^c
6.0~7.0g	0.77±0.00^bc	0.06±0.00^ab	0.65±0.63^ab	5.97±0.04^e	43.84±0.20^b	314.97±2.31^bc
7.0~8.0g	0.73±0.02^ab	0.05±0.00^a	0.62±0.59^a	5.51±0.07^c	51.58±3.69^c	310.23±5.71^b
8.0~9.0g	0.71±0.18^a	0.06±0.00^bc	0.67±0.63^b	4.93±0.06^a	46.94±1.34^bc	254.83±6.64^a
9.0~10.0g	0.77±0.01^c	0.07±0.01^cd	0.66±0.64^b	5.16±0.04^b	37.78±2.40^a	250.89±17.74^a

胚轴鲜重等级	N含量/mg	P含量/mg	K含量/mg	Na含量/mg	有机碳含量/mg	淀粉含量/mg
4.0~5.0g	13.10±0.35^a	1.26±0.02^a	11.69±0.30^a	9.38±0.02^a	711.37±7.33^a	549.71±14.09^a
5.0~6.0g	17.28±0.12^b	1.41±0.06^a	14.23±0.22^b	12.76±0.05^b	1021.81±16.47^b	730.87±8.60^b
6.0~7.0g	19.47±0.09^c	1.42±0.03^a	16.42±0.16^c	15.10±0.11^c	1109.25±5.10^b	793.27±4.61^b
7.0~8.0g	21.22±0.60^d	1.49±0.04^a	17.91±0.25^d	16.02±0.21^d	1500.85±107.42^c	900.89±10.69^c
8.0~9.0g	24.04±0.60^e	2.15±0.11^b	22.48±0.52^e	16.61±0.20^e	1581.97±45.05^c	866.52±20.93^c
9.0~10.0g	30.66±0.30^f	2.83±0.27^c	26.25±0.40^f	20.45±0.16^f	1495.92±94.85^c	1000.86±47.96^d

胚轴鲜重等级	C:N	N:P	C:P	K:Na
4.0~5.0g	54.42±1.10^ab	10.36±0.12^a	562.98±6.24^a	1.25±0.03^b
5.0~6.0g	59.13±0.90^b	12.40±0.59^bc	735.32±44.83^b	1.12±0.02^a
6.0~7.0g	56.97±0.28^b	13.70±0.31^cd	780.43±18.54^b	1.09±0.01^a
7.0~8.0g	70.30±3.17^c	14.35±0.76^d	1019.51±97.27^c	1.12±0.05^a
8.0~9.0g	66.10±2.95^c	11.26±0.30^ab	746.91±48.64^b	1.36±0.01^c
9.0~10.0g	48.78±3.02^a	11.31±1.00^ab	550.05±57.24^a	1.28±0.02^b

胚轴鲜重等级	生长高/cm	基径/mm	叶片数/ (片·株^-1)	根干重/g	茎干重/g	叶干重/g	胚轴干重/g	净生物量/g	总生物量/g
4.0~5.0g	11.08±0.29^a	5.88±0.13^a	7.23±0.19^a	0.87±0.11^a	0.86±0.13^a	1.41±0.16^a	1.84±0.08^a	3.14±0.36^a	4.98±0.42^a
5.0~6.0g	14.53±0.33^b	6.52±0.12^b	8.10±0.23^b	1.37±0.12^bc	1.24±0.09^b	2.13±0.10^b	2.61±0.08^b	4.74±0.23^b	7.35±0.30^b
6.0~7.0g	16.50±0.37^c	7.18±0.11^c	8.18±0.17^b	0.77±0.14^a	1.19±0.09^ab	2.09±0.21^b	2.53±0.09^b	4.05±0.41^ab	6.58±0.50^b
7.0~8.0g	16.90±0.38^c	7.69±0.10^d	8.83±0.20^b	1.04±0.15^ab	1.27±0.15^b	2.19±0.14^b	2.98±0.06^c	4.50±0.37^b	7.48±0.42^b
8.0~9.0g	17.23±0.32^cd	8.04±0.09^e	10.23±0.43^c	1.55±0.12^cd	1.83±0.12^c	3.06±0.15^c	3.58±0.10^d	6.44±0.31^c	10.02±0.37^c
9.0~10.0g	18.18±0.42^d	8.51±0.11^f	12.28±0.42^d	1.85±0.18^d	2.23±0.14^d	3.57±0.20^d	4.18±0.13^e	7.64±0.41^d	11.82±0.44^d

不同鲜重秋茄胚轴形态及其对幼苗生长的影响

Morphological characteristics of hypocotyls with different fresh weights of Kandelia obovata and their effects on the seedling growth

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	鲜重	长度	横径	顶径	N	P	K	Na	有机碳	淀粉	C:N	N:P	C:P	K:Na	生长高	基径	净生物量	总生物量
鲜重	1	0.972^**	0.994^**	0.990^**	0.976^**	0.890^*	0.985^**	0.970^**	0.928^**	0.947^**	0.039	0.066	0.062	0.443	0.913^*	0.994^**	0.908^*	0.935^**
长度		1	0.960^**	0.946^**	0.909^*	0.814^*	0.942^**	0.911^*	0.968^**	0.909^*	0.221	0.090	0.172	0.473	0.908^*	0.970^**	0.877^*	0.903^*
横径			1	0.989^**	0.970^**	0.856^*	0.970^**	0.983^**	0.924^**	0.962^**	0.042	0.152	0.110	0.359	0.944^**	0.998^**	0.874^*	0.904^*
顶径				1	0.977^**	0.868^*	0.967^**	0.983^**	0.926^**	0.975^**	0.041	0.147	0.115	0.347	0.923^**	0.991^**	0.887^*	0.918^**
N					1	0.939^**	0.986^**	0.980^**	0.844^*	0.938^**	-0.152	0.011	-0.078	0.401	0.882^*	0.960^**	0.942^**	0.960^**
P						1	0.953^**	0.855^*	0.687	0.767	-0.347	-0.331	-0.382	0.632	0.683	0.837^*	0.965^**	0.961^**
K							1	0.953^**	0.862^*	0.902^*	-0.105	-0.079	-0.105	0.526	0.858^*	0.962^**	0.954^**	0.969^**
Na								1	0.878^*	0.980^**	-0.052	0.203	0.085	0.245	0.951^**	0.977^**	0.877^*	0.906^*
有机碳									1	0.924^**	0.401	0.279	0.392	0.318	0.914^*	0.947^**	0.773	0.812^*
淀粉										1	0.114	0.340	0.263	0.144	0.968^**	0.968^**	0.822^*	0.859^*
C:N											1	0.529	0.877^*	-0.142	0.182	0.102	-0.187	-0.145
N:P												1	0.867^*	-0.792	0.421	0.177	-0.223	-0.164
C:P													1	-0.527	0.331	0.160	-0.237	-0.177
K:Na														1	0.086	0.353	0.569	0.540
生长高															1	0.947^**	0.763	0.801
基径																1	0.866^*	0.899^*
净生物量																	1	0.997^**
总生物量																		1

指标类型	项目	性状	主成分1	主成分2	主成分3
胚轴形态指标	X₁	长度	0.952	0.185	0.214
	X₂	横径	0.972	0.176	-0.038
	X₃	顶径	0.976	0.168	-0.042
	X₄	干重	0.994	0.061	-0.014
胚轴营养成分指标	X₅	N	0.989	-0.008	-0.138
	X₆	P	0.936	-0.341	-0.053
	X₇	K	0.994	-0.057	0.001
	X₈	Na	0.963	0.174	-0.196
	X₉	有机碳	0.888	0.392	0.239
	X₁₀	淀粉	0.930	0.333	-0.140
	X₁₁	C:N	-0.054	0.758	0.644
	X₁₂	N:P	-0.021	0.951	-0.306
	X₁₃	C:P	-0.043	0.974	0.201
	X₁₄	K:Na	0.473	-0.625	0.585
幼苗生长指标	X₁₅	生长高	0.884	0.418	-0.131
	X₁₆	基径	0.968	0.215	0.005
	X₁₇	叶片数	0.975	-0.192	-0.065
	X₁₈	根干重	0.823	-0.373	0.108
	X₁₉	茎干重	0.977	-0.200	-0.015
	X₂₀	叶干重	0.985	-0.128	-0.008
	X₂₁	胚轴干重	0.996	-0.023	0.011
	X₂₂	净生物量	0.963	-0.214	0.020
	X₂₃	总生物量	0.979	-0.151	0.017
初始特征值			17.592	3.852	1.110
方差贡献率/%			76.485	16.746	4.827
累积方差贡献率/%			76.485	93.231	98.059

胚轴鲜重等级	F₁	排序	F₂	排序	F₃	排序	F	排序
4.0~5.0g	-6.26	6	1.63	2	-0.59	5	-4.54	6
5.0~6.0g	-2.22	5	-0.43	4	-0.25	3	-1.78	5
6.0~7.0g	-0.73	4	-2.55	6	-0.35	4	-1.00	4
7.0~8.0g	0.75	3	-1.69	5	1.42	1	0.36	3
8.0~9.0g	2.34	2	2.63	1	1.11	2	2.28	2
9.0~10.0g	6.11	1	0.41	3	-1.33	6	4.68	1

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