IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) ALL CONTENT : Managing deltas : Seasonal variation of carbohydrates in pueraria montana as affected by soil characteristics in a riv...
Seasonal variation of carbohydrates in pueraria montana as affected by soil characteristics in a river floodplain
seasonal changes of total non-structural carbohydrate (TNC), water soluble carbohydrate (WSC) and
starch concentrations in Pueraria montana throughout its lifecycle to elucidate potential points in the seasonal growth
and phenological cycles for improved control. The study was carried out from April 2008 to June 2009 at two different
habitat zones with distinct soil conditions in the riparian zone of the Tama River, Tokyo, Japan. One zone, with sandy
soil, had lower levels of available nitrogen and phosphorous while the second zone contained high levels of organic
matter and nutrient levels. The highest and lowest concentrations of TNC and TNC pools in roots of P. montana were
observed in December and August at both study sites. Lowest TNC reserves were attained at the end of the vegetative
stage with highest TNC reserves at the end of the reproductive stage. WSC gradually decreased from April to August in
the roots, and then increased until February. The starch concentrations of all plant organs followed the same pattern as
WSC. Stem and leaf did not show the same pattern as the roots. The total carbohydrate concentrations and pools did
not show significant variation between the two sites suggesting that soil conditions had very little effect on carbohydrate
production in different organs of the plant (p ≤ .05). The studies suggest that the identified low points of carbohydrate
storage in the roots might be exploited to improve management of P. montana.Form Required :
File Size : 600,731 bytes
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Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Managing deltas
Date Published : 28/08/2015
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