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ARS Home » Southeast Area » Tifton, Georgia » Crop Genetics and Breeding Research » Research » Publications at this Location » Publication #312313
Title: Influence of planting date and temperature on inulin content in Jerusalem Artichoke (Helianthus tuberosus L.)

Author
item PUANGBUT, D - Khon Kaen University
item JOGLOY, S - Khon Kaen University
item VORASOOT, N - Khon Kaen University
item SRIJARANAI, S - Khon Kaen University
item KESMALA, T - Khon Kaen University
item Holbrook, Carl - Corley
item PATANOTHAI, A - Khon Kaen University

Submitted to: Australian Journal of Crop Science
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 8/10/2012
Publication Date: 10/15/2012
Citation: Puangbut, D., Jogloy, S., Vorasoot, N., Srijaranai, S., Kesmala, T., Holbrook Jr, C.C., Patanothai, A. 2012. Influence of planting date and temperature on inulin content in Jerusalem Artichoke (Helianthus tuberosus L.). Australian Journal of Crop Science. 6:1159-1165.

Interpretive Summary: Jerusalem artichoke is native to North America and is an inulin producing crop. Previous studies have indicated health benefits from dietary inulin. The objective of this study was to determine the effect of planting date on inulin yield and inulin content when Jerusalem artichoke is grown in Thailand. Three genotypes were grown using seven planting dates. Jerusalem artichoke could be grown in all planting dates, but the most appropriate planting dates were in March. November to January should be avoided because the plants showed severe stunting with these planting dates. Moderate relationships between temperature sums and inulin content were observed in both years of testing. The results revealed that temperature was important for producing high tuber yield having high inulin during the dry season in tropical regions.

Technical Abstract: Lower temperatures during the dry season in tropical regions might affect inulin content and inulin yield of Jerusalem artichoke. The objective of this study was to determine the effect of planting dates during low temperature on inulin yield and content of Jerusalem artichoke. Two pot experiments were conducted during the dry season 2008/09 and 2009/10. Three genotypes were grown at seven planting dates. Planting Jerusalem artichoke during lower temperature periods (10-16 C) reduced total dry weight and inulin content, whereas inulin content increased when planted during warmer periods (21-31 C). Jerusalem artichoke could be grown in all planting dates, but the most appropriate planting dates were in March. November to January should be avoided because the plants showed severe stunting with these planting dates. Moderate relationships between temperature sums and inulin content were observed in 2008/09 (r=0.64; P<0.01) and 2009/10 (r=0.61; P<0.01). The results revealed that temperature was important for producing high tuber yield having high inulin during the dry season in tropical regions.