tailieunhanh - Effects of water regimes on inulin content and inulin yield of Jerusalem artichoke genotypes with different levels of drought tolerance

Drought is a recurring problem of Jerusalem artichoke (Helianthus tuberosus L.) production under rainfed conditions. A better understanding of the responses of Jerusalem artichoke genotypes to drought can lead to the improvement of inulin content and inulin yield in Jerusalem artichoke and its production planning. | Turkish Journal of Agriculture and Forestry Research Article Turk J Agric For (2016) 40: 335-343 © TÜBİTAK doi: Effects of water regimes on inulin content and inulin yield of Jerusalem artichoke genotypes with different levels of drought tolerance 1,2 1,3,4, 1,2 Cholada ADULDECHA , Wanwipa KAEWPRADIT *, Nimitr VORASOOT , 1,2 1,2 1,2,3 Darunee PUANGBUT , Sanun JOGLOY , Aran PATANOTHAI 1 Department of Plant Science and Agricultural Resource, Faculty of Agriculture, Khon Kaen University, Khon Kaen, Thailand 2 Peanut and Jerusalem Artichoke Improvement for Functional Food Research Group, Khon Kaen University, Khon Kaen, Thailand 3 Northeast Thailand Cane and Sugar Research Center, Khon Kaen University, Khon Kaen, Thailand 4 Applied Engineering for Important Crops of the North East Group, Khon Kaen University, Khon Kaen, Thailand Received: Accepted/Published Online: Final Version: Abstract: Drought is a recurring problem of Jerusalem artichoke (Helianthus tuberosus L.) production under rainfed conditions. A better understanding of the responses of Jerusalem artichoke genotypes to drought can lead to the improvement of inulin content and inulin yield in Jerusalem artichoke and its production planning. The objective of this study was to compare the responses of five Jerusalem artichoke genotypes (JA60, JA125, JA5, JA89, and HEL65) to three water regimes (100% available water (AW; field capacity), 50% AW, and 25% AW) for inulin content and inulin yield. The experimental results showed that water regimes and Jerusalem artichoke genotypes were significantly different for inulin content and inulin yield. The interactions between Jerusalem artichoke genotypes and water regimes were also significant for inulin content and inulin yield. Under field capacity level, the results from the experimental years (2012 and 2013) showed that JA125, JA5, JA60, and HEL65 had the highest .