Variation of inulin content, inulin yield and water use efficiency for inulin yield in Jerusalem artichoke genotypes under different water regimes

Darunee Puangbut, Sanun Jogloy, Nimitr Vorasoot, Supalax Srijaranai, Corley Carl Holbrook and Aran Patanothai

Agricultural Water Management, 2015, vol. 152, issue C, 142-150

Abstract: The information on genotypic variation for inulin content, inulin yield and water use efficiency of inulin yield (WUEi) in response to drought is limited. This study was to investigate the genetic variability in inulin content, inulin yield and WUEi of Jerusalem artichoke (Helianthus tuberosus L.) under different water regimes. A field experiment was conducted for two years during September to January 2010/2011 and 2011/2012. A strip plot design with four replications was used in both years. Horizontal factors were three irrigation levels (W1=100% evapotranspiration (ET), W2=75% ET and W3=45% ET) and vertical factors were 12 Jerusalem artichoke genotypes. Data were recorded for inulin content, inulin yield and WUEi at harvest. Significant differences among Jerusalem artichoke genotypes were observed for inulin content, inulin yield and WUEi under W1, W2 and W3 in both years. There were five genotypes (HEL 253, HEL 53, HEL 256, HEL 65 and CN 52867) that exhibited consistently high inulin content and inulin yield across water regimes in both years. Inulin content was increased under W2 conditions but not inulin yield, while WUEi was increased under both W2 and W3 conditions. CN 52867 and HEL 65 were the genotypes with the highest inulin content and inulin yield under limited water conditions in both years. Furthermore, these genotypes showed high WUEi and drought tolerance indices under drought conditions in both years. Improvement of inulin content combined with high WUEi could have contributed to higher inulin yield under limited water conditions. The information on genotypic variation in inulin content and WUEi under drought conditions may have application in genetic improvement of drought resistance in Jerusalem artichoke.

Keywords: Helianthus tuberosus; Genotypic; Drought stress; Fructan (search for similar items in EconPapers)
Date: 2015
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0378377415000141
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:agiwat:v:152:y:2015:i:c:p:142-150

DOI: 10.1016/j.agwat.2015.01.005

Access Statistics for this article

Agricultural Water Management is currently edited by B.E. Clothier, W. Dierickx, J. Oster and D. Wichelns

More articles in Agricultural Water Management from Elsevier
Bibliographic data for series maintained by Catherine Liu ().