Effects of Night-break Treatment Performed Three Times per Week and Exposure to Cold Air on Spinach Growth and Quality in Winter Season

• HAMAMOTO Hiroshi

  National Agricultural Research Center for Western Region, National Agriculture and Food Research Organization

• FUJIWARA Takahiro

  National Agricultural Research Center for Western Region, National Agriculture and Food Research Organization

• YOSHIDA Yuko

  National Agricultural Research Center for Western Region, National Agriculture and Food Research Organization

抄録

We investigated the combined effects of night-break treatment performed three times per week and subsequent exposure to cold air by opening the greenhouse windows on the growth and quality of December-sown spinach (Spinacia oleracea L.). Plant height and fresh weight increased as a result of the night-break treatment, but plant elongation decreased because of the exposure to cold air. On comparing similar-sized harvests, the sugar concentration (Brix value) and L-ascorbic acid level were significantly higher but the nitrate (NO₃^-) level was lower in the combined treatment than in the control plants without the night break and exposure to cold air. These results suggest that the combined method of the night break and subsequent exposure to cold air would be effective to produce high-quality spinach without delaying the harvest.

収録刊行物

• Japan Agricultural Research Quarterly: JARQ

  Japan Agricultural Research Quarterly: JARQ 45 (2), 219-223, 2011

  国立研究開発法人　国際農林水産業研究センター

キーワード

• Brix
• L-ascorbic acid
• nitrate
• opening greenhouse windows

詳細情報

• CRID: 1390282679676938368
• NII論文ID: 130002147933
• DOI: 10.6090/jarq.45.219
• ISSN: 21858896
• ISSN: 00213551
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可