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Photoperiod and growing degree days effect on dry matter partitioning in Jerusalem artichoke
International Journal of Plant Production
  • Ruttanachira Ruttanaprasert, Khon Kaen University
  • Sanun Jogloy, Khon Kaen University
  • Nimitr Vorasoot, Khon Kaen University
  • Thawan Kesmala, Khon Kaen University
  • Rameshwar S. Kanwar, Iowa State University
  • Carl C. Holbrook, United States Department of Agriculture
  • Aran Patanothai, Khon Kaen University
Document Type
Article
Publication Date
4-1-2013
Abstract
The effect of photoperiod and growing degree days (GDD) on dry matter and dry matter partitioning in Jerusalem artichoke was investigated during 2008-09 and 2009-10. Three Jerusalem artichoke genotypes (CN-52867, JA-89 and HEL-65) were planted in 15 day-intervals between with thirteen different dates (September 20 to March 20) at Khon Kaen University, Thailand. Jerusalem artichoke genotypes responded differently to varying planting dates for harvest index, shoot dry weight, leaf area, number of tubers and tuber size. Two genotypes, CN-52867 and JA-89, were significantly more productive on the planting date of 20 September and they also performed well on planting dates of 5 October to 20 March. Plant grown in long photoperiod with a higher number of GDD produced shoot dry weight rather than greater number of harvestable tubers, while short photoperiod induced high partitioning of assimilates to harvestable tubers. Jerusalem artichoke plants grown during short photoperiod were smaller and produced larger tubers than those grown during long photoperiod. Tuber yield was relatively unchanged across planting dates. Since Jerusalem artichoke during short photoperiod had smaller plants, growing Jerusalem artichoke at higher plant population with optimum density is highly recommended to increase tuber yield. The information obtained in this study is extremely important for Jerusalem artichoke production and breeding in the tropical agro-climatic conditions such as Thailand.
Comments

This article is from International Journal of Plant Production 7 (2013): 393–416.

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Open
Rights
Works produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted.
Language
en
File Format
application/pdf
Citation Information
Ruttanachira Ruttanaprasert, Sanun Jogloy, Nimitr Vorasoot, Thawan Kesmala, et al.. "Photoperiod and growing degree days effect on dry matter partitioning in Jerusalem artichoke" International Journal of Plant Production Vol. 7 Iss. 3 (2013) p. 393 - 416
Available at: http://works.bepress.com/rskanwar/47/