Responses of water spinach (Ipomoea aquatica Forssk.) on growth, morphology, uptake rate and nutrients allocation under high ammonium concentration

The effects of external NH 4 + concentration on growth, morphology, NH 4 + uptake and mineral allocation in Ipomoea aquatica were investigated under greenhouse conditions. Similar sized plants were grown on full strength Smart and Barko growth medium [1] with different levels of NH 4 + -N (0.5, 1,...

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Main Authors: Sutthathorn Chairuangsri, Niwooti Whangchai, Arunothai Jampeetong
Format: Journal
Published: 2018
Online Access:https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84899647703&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/45447
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-454472018-01-24T06:10:33Z Responses of water spinach (Ipomoea aquatica Forssk.) on growth, morphology, uptake rate and nutrients allocation under high ammonium concentration Sutthathorn Chairuangsri Niwooti Whangchai Arunothai Jampeetong The effects of external NH 4 + concentration on growth, morphology, NH 4 + uptake and mineral allocation in Ipomoea aquatica were investigated under greenhouse conditions. Similar sized plants were grown on full strength Smart and Barko growth medium [1] with different levels of NH 4 + -N (0.5, 1, 5, 10 and 15 mM) for four weeks. Relative growth rate was high in plants fed with NH 4 + at concentrations of 0.5, 1 and 5 mM, but at higher concentrations the plants were stunted with few and short roots, old leaves were lost and growth of new ones was suppressed. Submerged stems and roots were damaged especially in plants supplied with 15 mM NH 4 + . The NH 4 + uptake rate tended to decrease with increasing NH 4 + supply. This may be due to damaged roots and stems which decreased efficiency of nutrient uptake. However, we found only small changes in mineral concentration in the tissue of both leaves and roots. We suggest that I. aquatica can be used for water treatment but the NH 4 + concentration must be less than 5 mM to prevent root and stem damage that cause minerals to be released from the plants and returned to the water treatment system. 2018-01-24T06:10:33Z 2018-01-24T06:10:33Z 2014-01-01 Journal 01252526 2-s2.0-84899647703 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84899647703&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/45447
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
description The effects of external NH 4 + concentration on growth, morphology, NH 4 + uptake and mineral allocation in Ipomoea aquatica were investigated under greenhouse conditions. Similar sized plants were grown on full strength Smart and Barko growth medium [1] with different levels of NH 4 + -N (0.5, 1, 5, 10 and 15 mM) for four weeks. Relative growth rate was high in plants fed with NH 4 + at concentrations of 0.5, 1 and 5 mM, but at higher concentrations the plants were stunted with few and short roots, old leaves were lost and growth of new ones was suppressed. Submerged stems and roots were damaged especially in plants supplied with 15 mM NH 4 + . The NH 4 + uptake rate tended to decrease with increasing NH 4 + supply. This may be due to damaged roots and stems which decreased efficiency of nutrient uptake. However, we found only small changes in mineral concentration in the tissue of both leaves and roots. We suggest that I. aquatica can be used for water treatment but the NH 4 + concentration must be less than 5 mM to prevent root and stem damage that cause minerals to be released from the plants and returned to the water treatment system.
format Journal
author Sutthathorn Chairuangsri
Niwooti Whangchai
Arunothai Jampeetong
spellingShingle Sutthathorn Chairuangsri
Niwooti Whangchai
Arunothai Jampeetong
Responses of water spinach (Ipomoea aquatica Forssk.) on growth, morphology, uptake rate and nutrients allocation under high ammonium concentration
author_facet Sutthathorn Chairuangsri
Niwooti Whangchai
Arunothai Jampeetong
author_sort Sutthathorn Chairuangsri
title Responses of water spinach (Ipomoea aquatica Forssk.) on growth, morphology, uptake rate and nutrients allocation under high ammonium concentration
title_short Responses of water spinach (Ipomoea aquatica Forssk.) on growth, morphology, uptake rate and nutrients allocation under high ammonium concentration
title_full Responses of water spinach (Ipomoea aquatica Forssk.) on growth, morphology, uptake rate and nutrients allocation under high ammonium concentration
title_fullStr Responses of water spinach (Ipomoea aquatica Forssk.) on growth, morphology, uptake rate and nutrients allocation under high ammonium concentration
title_full_unstemmed Responses of water spinach (Ipomoea aquatica Forssk.) on growth, morphology, uptake rate and nutrients allocation under high ammonium concentration
title_sort responses of water spinach (ipomoea aquatica forssk.) on growth, morphology, uptake rate and nutrients allocation under high ammonium concentration
publishDate 2018
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84899647703&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/45447
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