【摘 要】
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The pot trials were conducted to investigate the growth and development of Potamogeton erispus in different sediments of Lake Taihu.The results showed that nutrient enrichment in sediment had favorabl
【机 构】
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Laboratory of Plant Nutrition and Ecological Environment Research,Centre for Microelement Research o
论文部分内容阅读
The pot trials were conducted to investigate the growth and development of Potamogeton erispus in different sediments of Lake Taihu.The results showed that nutrient enrichment in sediment had favorableeffects on the vegetative growth,(b)ut had opposite influence on the propagules formation including reducing the number and delaying the initiation of propagules generation.The multiple regressive analysis indicated that only Mn concentration in sediments exhibited a significant relationship with Mn contents in plants,but no Mn toxicity observed on biomass accumulation,suggesting that P.crispus might accumulate Mn in appreciable amounts with increasing Mn concentration in environment.Total plant biomass increased with increasing tissue N and Mg contents,while decreased with increasing tissue P and Cu concentration.Nutrient contents in plants did not correlate significantly with propagules biomass of P.crispus.
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