Effect of cutting periodicity on energy allocation and architecture of Trifolium repens

Abstract

Abstract: On the subtropical mountain swards, the effect of cutting periodicity on energy allocation, module density, number of branches and branching angle of T.repens were significant,With cutting periodicity raised, the energy allocation of stolon increased steadly,the caloric content of unit stolon dropped gradually,and the changing pattern of leaf density,stem density, branch number and internode's length was from low to high,and then to low.The branching intensity of T.repens ranged from 15 to 23.7 branches穖^-2,and branching angle raried from 49.5皌o 60.2皐hile the cutting periodicity differed.

Key words: Trifolium repens, Cutting, Energy allocation, Architecture, mitochondrial DNA, genetic structure, COII gene, geographic population, genetic diversity., Harmonia axyridis

CLC Number:

Q142
S812

BAO Guozhang, LI Xianglin, SHEN Wanbin, XIE Zhonglei, KANG Chunli . Effect of cutting periodicity on energy allocation and architecture of Trifolium repens[J]. Chinese Journal of Applied Ecology, 2003, (2): 215-218.

References

[1] Azuma Tsujimura. 1987. The ecology of Carex exyandra Ⅱ. The behavior of seedlings and tillers. Ecol Res,2:279～288
[2] Bao G-Z(包国章),Li X-L(李向林),Bai J-R(白静仁).2000.Effects of grazing and patch quality of soil on density and branching pattern of Trifolium repens.Chin J Ecol(生态学报),20(5):779～783(in Chinese)
[3] Bazzaz FA.1991. Habitat selection in plants.Am Nat,137:116～130.
[4] Birch CPD,Hutchings MJ.1992. Analysis of ramet development in the stoloniferous herb Glechoma hederacea using a plastochron index.Oikos,63:387～394
[5] Cain ML.1994. Consequences of foraging in clonal plant species.Ecology, 74(4):933～944
[6] Callaghan TV,et al.1990.Models of clonal plant growth based on population dynamics and architecture.Oikos, 57:257～269
[7] Chapman DF,Robson MJ,Snaydon RW.1992.Physiological integration in the clonal perennial herb Trifolium repens L.Oecologia,89:338～347
[8] de Kroon H, Schieving F.1991. Resource allocation patterns as a function of clonal morphology:A general model applied to a foraging clonal plant.J Ecol,79:519～530
[9] Eriksson O.1988.Ramet behaviour and population growth in the clonal herb Potentilla anserina.J Ecol,76:522～536
[10] Hodgson J.1990.Trans.Gong Y-M(弓耀明),et al.1993.Grazing Management. Beijing:Science Press.(in Chinese)
[11] Hutchings MJ, de Kroon H. 1994. Foraging in plants: The role of morphological plasticity in resource acquisition.Adv Ecol Res,25:159～238
[12] Simpson D, Wilman D, Adams WA.1987.The distribution of white clover (Trifolium repens L.) and grasses within six soun hill swards.J Appl Ecol,24:201～216
[13] Simpson D, Wilman D,Adams WA.1988. Response of white clover and grass to applications of potassium and nitrogen on a potassium-deficient hill soil.J Agric Sci,110:159～167
[14] Slade A-J,Hutchings MJ.1987b.The effects of nutrient availability on foraging in the clonal herb Glechoma hederacea.J Ecol,75:95～112
[15] Turkington R,Harper JL.1979.The growth, distibution and neighbour relationships of Trifloium repens in a permanent pasture.J Ecol,67:201～218
[16] Turkington R,Burdon JT. 1983.The biology of Canadian weeds. 57.Trifolium repens L.Can J Plant Sci,63:243～266
[17] Wilman D,Simpson D.1988.The growth of white clover (Trifolium repens) in five sown hill swards grazed by sheep.J Appl Ecol,25:631～642