修剪和不定根节点对生长在田间条件下的南瓜中多氯联苯摄取的影响。
The effects of pruning and nodal adventitious roots on polychlorinated biphenyl uptake by Cucurbita pepo grown in field conditions.
机构信息
Department of Chemistry and Chemical Engineering, Royal Military College of Canada, PO Box 17000 Station Forces, Kingston, ON, Canada.
出版信息
Environ Pollut. 2011 Mar;159(3):769-75. doi: 10.1016/j.envpol.2010.11.015. Epub 2010 Dec 18.
Two cultivation techniques (i-pruning and ii-nodal adventitious root encouragement) were investigated for their ability to increase PCB phytoextraction by Cucurbita pepo ssp pepo cv. Howden (pumpkin) plants in situ at a contaminated industrial site in Ontario (Aroclor 1248, mean soil [PCB] = 5.6 μg g(-1)). Pruning was implemented to increase plant biomass close to the root where PCB concentration is known to be highest. This treatment was found to have no effect on final shoot biomass or PCB concentration. However, material pruned from the plant is not included in the final shoot biomass. The encouragement of nodal adventitious roots at stem nodes did significantly increase the PCB concentration in the primary stem, while not affecting shoot biomass. Both techniques are easily applied cultivation practices that may be implemented to decrease phytoextraction treatment time.
两种栽培技术（i-修剪和 ii-节位不定根诱导）被研究用于增加南瓜（Cucurbita pepo ssp pepo cv. Howden）在安大略省受污染工业场地原位修复多氯联苯的能力（Aroclor 1248，土壤中多氯联苯的平均浓度 [PCB] = 5.6μg g(-1))。修剪是为了增加靠近根部的植物生物量，因为众所周知，根部的多氯联苯浓度最高。这种处理方法对最终的茎叶生物量或多氯联苯浓度没有影响。然而，从植物上修剪下来的材料不包括在最终的茎叶生物量中。在茎节点诱导不定根的方法显著增加了主茎中的多氯联苯浓度，而不影响茎叶生物量。这两种技术都是易于应用的栽培方法，可以用来缩短植物修复的处理时间。
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