Hybrid Napier grass as a candidate species for bio-energy in plant-based water treatment systems: Interactive effects of nitrogen and water depth

© 2017 Elsevier B.V. Hybrid Napier grass (Pennisetum purpureum Schumach × P. americanum (L.) Leeke cv. Pakchong1) is a candidate species for use as a bio-energy crop in plant-based water treatment systems due to its high growth and biomass production rate, ease of propagation and harvesting, and the...

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Main Authors: Pincam T., Brix H., Eller F., Jampeetong A.
Format: Journal
Published: 2017
Online Access:https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85010203556&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/40791
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Institution: Chiang Mai University
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spelling th-cmuir.6653943832-407912017-09-28T04:11:25Z Hybrid Napier grass as a candidate species for bio-energy in plant-based water treatment systems: Interactive effects of nitrogen and water depth Pincam T. Brix H. Eller F. Jampeetong A. © 2017 Elsevier B.V. Hybrid Napier grass (Pennisetum purpureum Schumach × P. americanum (L.) Leeke cv. Pakchong1) is a candidate species for use as a bio-energy crop in plant-based water treatment systems due to its high growth and biomass production rate, ease of propagation and harvesting, and the quality of the biomass. We conducted a 2 × 3 factorial mesocosm experiment with two levels of inorganic N (100 μM and 1000 μM) and 3 water levels (0, 10 and 20 cm depth) and monitored the plant responses in terms of growth and biomass allocation, root morphology and leaf pigment concentrations to assess how hybrid Napier grass responds to a combination of flooding and high N concentrations. Under non-flooded but saturated soil conditions, hybrid Napier grass grew well at both N concentrations, but the tissue contents of minerals and nutrients were higher when plants grew at high N concentration. At 20 cm water depth and at the low N concentration, hybrid Napier grass acclimated to the flooded conditions by producing 2.5 times longer adventitious roots from the stem nodes and containing 3 times more lysigeneous aerenchyma compared to the plants grown at non-flooded conditions. At the high N concentration, hybrid Napier grass was not able to acclimate to the flooded conditions and had chlorotic leaves and reduced growth. Hybrid Napier grass can grow both under water-saturated and flooded soil conditions (up to 20 cm water depth) while maintaining high biomass production. If N concentrations are moderate ( < 1000 μM), hybrid Napier grass is therefore suitable for use in integrated plant-based water treatment and bio-energy crop production systems. 2017-09-28T04:11:25Z 2017-09-28T04:11:25Z Journal 03043770 2-s2.0-85010203556 10.1016/j.aquabot.2017.01.001 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85010203556&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/40791
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
description © 2017 Elsevier B.V. Hybrid Napier grass (Pennisetum purpureum Schumach × P. americanum (L.) Leeke cv. Pakchong1) is a candidate species for use as a bio-energy crop in plant-based water treatment systems due to its high growth and biomass production rate, ease of propagation and harvesting, and the quality of the biomass. We conducted a 2 × 3 factorial mesocosm experiment with two levels of inorganic N (100 μM and 1000 μM) and 3 water levels (0, 10 and 20 cm depth) and monitored the plant responses in terms of growth and biomass allocation, root morphology and leaf pigment concentrations to assess how hybrid Napier grass responds to a combination of flooding and high N concentrations. Under non-flooded but saturated soil conditions, hybrid Napier grass grew well at both N concentrations, but the tissue contents of minerals and nutrients were higher when plants grew at high N concentration. At 20 cm water depth and at the low N concentration, hybrid Napier grass acclimated to the flooded conditions by producing 2.5 times longer adventitious roots from the stem nodes and containing 3 times more lysigeneous aerenchyma compared to the plants grown at non-flooded conditions. At the high N concentration, hybrid Napier grass was not able to acclimate to the flooded conditions and had chlorotic leaves and reduced growth. Hybrid Napier grass can grow both under water-saturated and flooded soil conditions (up to 20 cm water depth) while maintaining high biomass production. If N concentrations are moderate ( < 1000 μM), hybrid Napier grass is therefore suitable for use in integrated plant-based water treatment and bio-energy crop production systems.
format Journal
author Pincam T.
Brix H.
Eller F.
Jampeetong A.
spellingShingle Pincam T.
Brix H.
Eller F.
Jampeetong A.
Hybrid Napier grass as a candidate species for bio-energy in plant-based water treatment systems: Interactive effects of nitrogen and water depth
author_facet Pincam T.
Brix H.
Eller F.
Jampeetong A.
author_sort Pincam T.
title Hybrid Napier grass as a candidate species for bio-energy in plant-based water treatment systems: Interactive effects of nitrogen and water depth
title_short Hybrid Napier grass as a candidate species for bio-energy in plant-based water treatment systems: Interactive effects of nitrogen and water depth
title_full Hybrid Napier grass as a candidate species for bio-energy in plant-based water treatment systems: Interactive effects of nitrogen and water depth
title_fullStr Hybrid Napier grass as a candidate species for bio-energy in plant-based water treatment systems: Interactive effects of nitrogen and water depth
title_full_unstemmed Hybrid Napier grass as a candidate species for bio-energy in plant-based water treatment systems: Interactive effects of nitrogen and water depth
title_sort hybrid napier grass as a candidate species for bio-energy in plant-based water treatment systems: interactive effects of nitrogen and water depth
publishDate 2017
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85010203556&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/40791
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