EFFECTS OF TWIG SIZE ON BIOMASS ALLOCATION WITHIN TWIGS AND ON LAMINA AREA SUPPORTING EFFICIENCY IN RHODODENDRON: ALLOMETRIC SCALING ANALYSES

doi:10.3773/j.issn.1005-264x.2008.05.022

Abstract

Abstract:

Aims Current-year shoots (twigs) are the most active compartment in plants. Biomass allocation within twigs is an important parameter categorizing plant life history strategies. Our objective was to explain variation in leaf size among habitats and why small-leaved species are more likely to be seen in severe habitats than large-leaved species.

Methods Effects of twig size on biomass allocation among lamina, stem, and petiole and on lamina supporting efficiency were estimated using standardized major axis estimation. Correlation between parameters was examined using the phylogenetically independent comparative method.

Important findings Fractional lamina mass was found to be independent of twig size, but allometric relationships were found between stem mass and petiole mass and between lamina area and stem mass. Petiole mass increased disproportionally with stem mass, while lamina area failed to keep pace with the increase in stem mass. Species with smaller twigs and smaller leaves may be advantageous in lamina area supporting efficiency over their counterparts.

Key words: twig, biomass allocation, lamina area, allometric scaling, Rhododendron

LI Ya-Nan, YANG Dong-Mei, SUN Shu-Cun, GAO Xian-Ming. EFFECTS OF TWIG SIZE ON BIOMASS ALLOCATION WITHIN TWIGS AND ON LAMINA AREA SUPPORTING EFFICIENCY IN RHODODENDRON: ALLOMETRIC SCALING ANALYSES[J]. Chin J Plant Ecol, 2008, 32(5): 1175-1183.

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URL: https://www.plant-ecology.com/EN/10.3773/j.issn.1005-264x.2008.05.022

https://www.plant-ecology.com/EN/Y2008/V32/I5/1175

Figures/Tables 3

References 28

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物种 Species	小枝茎干重 TSM (mg)	总叶面积 TLA (mm²)	单叶面积 ILA (mm²)	总叶片干重 TLM (mg)	总叶柄干重 TPM (mg)
长毛杜鹃 R. trichanthum	428.31	4 145.04	540.66	334.09	14.86
纯红杜鹃 R. sperabile	2 234.93	10 712.46	1 438.99	1 775.71	122.49
大白杜鹃 R. decorum	2 313.00	14 766.36	1 703.81	1 595.44	104.11
大王杜鹃 R. rex	9 305.93	38 236.95	9 559.24	7 484.59	752.04
杜鹃 R. simisii	416.98	5 181.89	370.13	303.65	15.98
多鳞杜鹃 R. polylepis	660.19	6 849.21	1 208.68	575.97	16.64
繁花杜鹃 R. floribundum	1 915.78	14 821.07	2 615.48	1 552.11	73.11
贵州杜鹃 R. guizhouense	323.36	4 607.29	476.62	227.36	17.02
亮鳞杜鹃 R. heliolepis	1 179.60	6 580.64	897.36	762.05	42.38
芒刺杜鹃 R. strigillosum	1 369.04	8 812.61	862.10	965.82	51.93
红棕杜鹃 R. rubiginosum	753.49	6 268.57	924.87	572.71	34.94
白面杜鹃 R. zaleucum	485.58	5 957.94	552.80	368.91	15.13
亮叶杜鹃 R. vernicosum	1 205.10	8 607.69	1 156.26	763.88	34.99
秀雅杜鹃 R. concinnum	494.10	5 257.71	498.10	316.10	16.43
团叶杜鹃 R. orbiculare	1 564.11	8 553.17	2 025.75	1 070.78	76.67
锈叶杜鹃 R. siderophyllum	373.30	4 819.46	619.65	307.08	10.41
白花杜鹃 R. mucronatum	297.61	3 955.59	378.73	228.17	7.50
亮毛杜鹃 R. microphyton	707.71	6 981.12	343.33	490.38	26.27
黄花杜鹃 R. lutescens	653.87	7 554.14	607.03	488.87	20.20
基毛杜鹃 R. rigidum	300.90	3 174.57	519.48	215.46	9.90
喇叭杜鹃 R. discolor	3 076.69	29 336.45	3 826.49	2 809.13	180.47
露珠杜鹃 R. irroratum	801.50	6 888.55	984.08	662.17	31.67
卵叶杜鹃 R. callimorphum	439.11	2 650.12	795.04	289.11	20.78
毛肋杜鹃 R. augustinii	499.40	4 568.37	1 054.24	396.29	11.63
美容杜鹃 R. calophytum	5 317.67	34 026.13	4 138.31	4 449.56	327.22
岷江杜鹃 R. hunnewellianum	919.09	6 745.44	979.18	760.98	42.31
绒毛杜鹃 R. pachytrichum	614.34	5 893.25	1 359.98	514.67	27.78
三花杜鹃 R. triflorum	317.60	3 105.80	522.47	211.10	9.83
山光杜鹃 R. oreodoxa	1 025.89	7 300.52	1 602.55	753.89	51.56
山育杜鹃 R. oreotrephes	570.23	4 782.49	1 049.82	405.23	20.79
问客杜鹃 R. ambiguum	589.35	5 137.93	983.86	472.46	23.57
腺果杜鹃 R. davidii	2 058.29	10 605.31	1 871.53	1 440.96	96.18
羊踯躅 R. molle	1 174.23	14 161.85	1 191.18	976.34	31.01
银叶杜鹃 R. argyrophyllum	1 481.67	8 624.79	1 584.15	1 215.78	54.78
云南杜鹃 R. yunnanense	314.46	4 656.43	453.06	232.52	11.85
粘毛杜鹃 R. glischrum	1 991.96	20 577.51	3 494.29	1 729.51	123.18
紫花杜鹃 R. amesiae	426.87	4 129.78	387.17	275.98	14.76
绿点杜鹃 R. searsiae	929.90	7 199.81	1 045.13	703.46	28.24
粉白杜鹃 R. hypoglaucum	1 463.19	6 621.11	876.32	802.30	50.86
极多花杜鹃 R. pleistanthum	777.86	5 982.46	464.16	465.86	24.64
峨眉银叶杜鹃 R. argyrophyllumssp.omeiense	1 078.39	7 058.49	1 411.70	877.28	33.17
疏花美容杜鹃 R. calophytumvar. pauciflorum	967.02	5 518.63	814.22	731.35	49.02

物种 Species	小枝茎干重 TSM (mg)	总叶面积 TLA (mm²)	单叶面积 ILA (mm²)	总叶片干重 TLM (mg)	总叶柄干重 TPM (mg)
长毛杜鹃 R. trichanthum	428.31	4 145.04	540.66	334.09	14.86
纯红杜鹃 R. sperabile	2 234.93	10 712.46	1 438.99	1 775.71	122.49
大白杜鹃 R. decorum	2 313.00	14 766.36	1 703.81	1 595.44	104.11
大王杜鹃 R. rex	9 305.93	38 236.95	9 559.24	7 484.59	752.04
杜鹃 R. simisii	416.98	5 181.89	370.13	303.65	15.98
多鳞杜鹃 R. polylepis	660.19	6 849.21	1 208.68	575.97	16.64
繁花杜鹃 R. floribundum	1 915.78	14 821.07	2 615.48	1 552.11	73.11
贵州杜鹃 R. guizhouense	323.36	4 607.29	476.62	227.36	17.02
亮鳞杜鹃 R. heliolepis	1 179.60	6 580.64	897.36	762.05	42.38
芒刺杜鹃 R. strigillosum	1 369.04	8 812.61	862.10	965.82	51.93
红棕杜鹃 R. rubiginosum	753.49	6 268.57	924.87	572.71	34.94
白面杜鹃 R. zaleucum	485.58	5 957.94	552.80	368.91	15.13
亮叶杜鹃 R. vernicosum	1 205.10	8 607.69	1 156.26	763.88	34.99
秀雅杜鹃 R. concinnum	494.10	5 257.71	498.10	316.10	16.43
团叶杜鹃 R. orbiculare	1 564.11	8 553.17	2 025.75	1 070.78	76.67
锈叶杜鹃 R. siderophyllum	373.30	4 819.46	619.65	307.08	10.41
白花杜鹃 R. mucronatum	297.61	3 955.59	378.73	228.17	7.50
亮毛杜鹃 R. microphyton	707.71	6 981.12	343.33	490.38	26.27
黄花杜鹃 R. lutescens	653.87	7 554.14	607.03	488.87	20.20
基毛杜鹃 R. rigidum	300.90	3 174.57	519.48	215.46	9.90
喇叭杜鹃 R. discolor	3 076.69	29 336.45	3 826.49	2 809.13	180.47
露珠杜鹃 R. irroratum	801.50	6 888.55	984.08	662.17	31.67
卵叶杜鹃 R. callimorphum	439.11	2 650.12	795.04	289.11	20.78
毛肋杜鹃 R. augustinii	499.40	4 568.37	1 054.24	396.29	11.63
美容杜鹃 R. calophytum	5 317.67	34 026.13	4 138.31	4 449.56	327.22
岷江杜鹃 R. hunnewellianum	919.09	6 745.44	979.18	760.98	42.31
绒毛杜鹃 R. pachytrichum	614.34	5 893.25	1 359.98	514.67	27.78
三花杜鹃 R. triflorum	317.60	3 105.80	522.47	211.10	9.83
山光杜鹃 R. oreodoxa	1 025.89	7 300.52	1 602.55	753.89	51.56
山育杜鹃 R. oreotrephes	570.23	4 782.49	1 049.82	405.23	20.79
问客杜鹃 R. ambiguum	589.35	5 137.93	983.86	472.46	23.57
腺果杜鹃 R. davidii	2 058.29	10 605.31	1 871.53	1 440.96	96.18
羊踯躅 R. molle	1 174.23	14 161.85	1 191.18	976.34	31.01
银叶杜鹃 R. argyrophyllum	1 481.67	8 624.79	1 584.15	1 215.78	54.78
云南杜鹃 R. yunnanense	314.46	4 656.43	453.06	232.52	11.85
粘毛杜鹃 R. glischrum	1 991.96	20 577.51	3 494.29	1 729.51	123.18
紫花杜鹃 R. amesiae	426.87	4 129.78	387.17	275.98	14.76
绿点杜鹃 R. searsiae	929.90	7 199.81	1 045.13	703.46	28.24
粉白杜鹃 R. hypoglaucum	1 463.19	6 621.11	876.32	802.30	50.86
极多花杜鹃 R. pleistanthum	777.86	5 982.46	464.16	465.86	24.64
峨眉银叶杜鹃 R. argyrophyllumssp.omeiense	1 078.39	7 058.49	1 411.70	877.28	33.17
疏花美容杜鹃 R. calophytumvar. pauciflorum	967.02	5 518.63	814.22	731.35	49.02