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Clonal Plasticity in Response to Nutrient Availability in the Stoloniferous Herb, Duchesnea indica

DONG Ming, ZHANG Shu_Min, CHEN Yu_Fu (Laboratory of Quantitative Vegetation Ecology, Institute of Botany, The Chinese Academy of Sciences, Beijing 100093, China)  
A pot experiment with three levels of nutrient (N, P, K) supply was carried out to investigate clonal plasticity of stoloniferous herb Duchesnea indica Focke in response to nutrient availability. The plants had greater biomass at higher levels of nutrient availability. The root/shoot ratio of the plants changed with the nutrient availability in the following order: low level high level medium level. They had the largest biomass allocation to stolon at the medium level of nutrient availability. The biomass allocation to petiole did not respond to the treatments. The plants formed more stolons and ramets at the high and medium levels than the low level of nutrient availability. The petiole length, specific petiole weight(mg·cm -1 )and stolon internode length of the plants did not respond to the treatments, while the specific stolon weight (mg·cm -1 )of the plants was greater at the high and medium levels than the low level of nutrient availability. The results have been discussed in the context of adaptation of clonal plants to environmental heterogeneity.
【Fund】: 国家杰出青年科学基金!( 3 982 5 10 6);; 国家自然科学基金!( 3 9770 13 2 )&&
【CateGory Index】: Q948.12
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