Fruiting characteristics and seed germination capacity of Abies fargesiiin Shennongjia Nature Reserve

doi:10.3724/SP.J.1003.2008.07361

Abstract

Abstract:

We investigated cone traits of Abies fargesii including length, width, fresh weight, seed numbers per cone, and seed traits including length, width, thickness, seed mass and seed germination capacity. The results showed that the average length and width of the cone were 5.37 ± 0.75 cm and 3.01 ± 0.32 cm, respectively, and its fresh weight was 18.93 ± 6.06 g, the seed number per cone was 59-567. The length, width and thickness of seeds were 1.08-8.68 mm, 1.16-6.42 mm and 0.66-3.48 mm, respectively, and the thousand-seed mass was 7.30 g. One-way ANOVA revealed that fruiting characteristics were significantly different both within and between populations. The distribution pattern of frequency of seed numbers per cone differed in different populations. The seed germination rate, seed germination energy and seed germination speed were different among mother trees. The proportion of empty seeds was high, accounting for 75.79% of the total amount due to seed abortion.

Key words: fruiting characteristics, cone, seed, germination experiment, germination percentage, germination energy

Li Zou, Qingmei Li, Zongqiang Xie. Fruiting characteristics and seed germination capacity of Abies fargesiiin Shennongjia Nature Reserve[J]. Biodiv Sci, 2008, 16(5): 509-515.

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URL: https://www.biodiversity-science.net/EN/10.3724/SP.J.1003.2008.07361

https://www.biodiversity-science.net/EN/Y2008/V16/I5/509

Figures/Tables 8

References 29

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种群 Population	母树 Mother tree	树高 Height (m)	胸径 DBH (cm)	冠幅 Crown (m×m)	生境 Habitat		种群状态 Situation
种群 Population	母树 Mother tree	树高 Height (m)	胸径 DBH (cm)	冠幅 Crown (m×m)	海拔 Altitude (m)	坡向 Slope direction	种群状态 Situation
I	1	23	59.5	6×7	2,610	NE50°	郁闭纯林 Closed and pure forest
	2	25	25.5	7×7
	3	20	36.7	7×7
II	4	20	44.3	9×7	2,860	SE39°	簇状丛生 Clustered trees
	5	32	55.2	10×10
	6	25	42.5	12×7

种群 Population	母树 Mother tree	树高 Height (m)	胸径 DBH (cm)	冠幅 Crown (m×m)	生境 Habitat		种群状态 Situation
种群 Population	母树 Mother tree	树高 Height (m)	胸径 DBH (cm)	冠幅 Crown (m×m)	海拔 Altitude (m)	坡向 Slope direction	种群状态 Situation
I	1	23	59.5	6×7	2,610	NE50°	郁闭纯林 Closed and pure forest
	2	25	25.5	7×7
	3	20	36.7	7×7
II	4	20	44.3	9×7	2,860	SE39°	簇状丛生 Clustered trees
	5	32	55.2	10×10
	6	25	42.5	12×7

		长 Length (cm)	宽 Width (cm)	鲜重 Fresh weight (g)
种群I (郁闭种群) Population I (in closed forest)	平均值 Mean ± SD	5.10 ± 0.68	2.84 ± 0.26	17.13 ± 3.96
	变异系数 CV (%)	13.33	9.15	23.12
	F	58.568	57.161	3.533
	P	0.000	0.000	0.031
种群II (开阔地种群) Population II (in open habitat)	平均值 Mean ± SD	5.66 ± 0.72	3.18 ± 0.28	20.88 ± 7.25
	变异系数 CV (%)	12.72	8.81	34.72
	F	51.073	15.164	85.196
	P	0.000	0.000	0.000
种群间 Between populations	F	51.898	149.538	37.449
种群间 Between populations	P	0.000	0.000	0.000

		长 Length (cm)	宽 Width (cm)	鲜重 Fresh weight (g)
种群I (郁闭种群) Population I (in closed forest)	平均值 Mean ± SD	5.10 ± 0.68	2.84 ± 0.26	17.13 ± 3.96
	变异系数 CV (%)	13.33	9.15	23.12
	F	58.568	57.161	3.533
	P	0.000	0.000	0.031
种群II (开阔地种群) Population II (in open habitat)	平均值 Mean ± SD	5.66 ± 0.72	3.18 ± 0.28	20.88 ± 7.25
	变异系数 CV (%)	12.72	8.81	34.72
	F	51.073	15.164	85.196
	P	0.000	0.000	0.000
种群间 Between populations	F	51.898	149.538	37.449
种群间 Between populations	P	0.000	0.000	0.000

			长 Length (mm)		宽 Width (mm)		厚 Thickness (mm)		重量 Weight (g)
种群I (郁闭种群) Population I (in closed forest)		平均值 Mean ± SD	6.14 ± 0.90		2.87 ± 0.38		1.79 ± 0.41		0.007 ± 0.004
		变异系数 CV (％)	14.66		13.24		22.91		57.14
		种群II (开阔地种群) Population II (in open habitat)		平均值 Mean ± SD	6.26 ± 0.75		3.08 ± 0.38		1.60 ± 0.25	0.008 ± 0.005
变异系数 CV (％)	11.98			12.34		15.63		62.5
种群间 Between populations	F			9.149		131.412		132.148	42.226
种群间 Between populations	P			0.003		0.000		0.000	0.000
植株间 Between trees	F			548.825		112.095		162.133	49.378
植株间 Between trees	P			0.000		0.000		0.000	0.000