The Effect of Phosphorus and Root Zone Temperature on Anthocyanin of Red Romaine Lettuce
- Authors
- Islam, Mohammad Zahirul; Lee, Young-Tack; Mele, Mahmuda Akter; Choi, In-Lee; Kang, Ho-Min
- Issue Date
- Feb-2019
- Publisher
- MDPI
- Keywords
- chlorophyll; color value; deep-flow; Lactuca sativa; mineral
- Citation
- AGRONOMY-BASEL, v.9, no.2
- Journal Title
- AGRONOMY-BASEL
- Volume
- 9
- Number
- 2
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/1932
- DOI
- 10.3390/agronomy9020047
- ISSN
- 2073-4395
- Abstract
- In this study, phosphorus (P) strength [(full strength: 1x-P, half strength: 0.5x-P and zero strength: 0x-P)] and root zone temperature (10 and 15 degrees C RZT) were investigated in red romaine lettuce to determine their effects on anthocyanin content. This experiment was conducted using a deep-flow technique (DFT) hydroponic system in a greenhouse during the winter in Gangwon province in the Korea Republic. The treatments were 1x-P (15 and 10 degrees C RZT), 0.5x-P (15 and 10 degrees C RZT) and 0x-P (15 and 10 degrees C RZT). The results showed that the P (phosphorus), K (potassium) and Ca (calcium) accumulation contents were lower in the 0x-P -treated red romaine lettuce leaves than in the other treatments. The maximum red romaine lettuce yields per plant, leaf number and leaf length were exhibited during the 1x-P at 15 degrees C RZT treatment. In 0x-P at 10 degrees C, RZT treatment showed lower leaf color values of L*, b*, chrome, oh and higher leaf color a* values. Moreover, in the 0x-P treatment at 10 degrees C RZT, the leaf chlorophyll content (SPAD), chlorophyll a, chlorophyll b and chlorophyll total were the lowest. Anthocyanin content was the highest in the 0x-P treatment, followed by 0.5x-P and 1x-P treatments at both 15 and 10 degrees C RZT. Regardless of the P intensity treatment, anthocyanin content was higher at 10 degrees C RZT than at 15 degrees C RZT. In summary, the 1x-P at 15 degrees C RZT treatment is the best for red romaine lettuce leaf yield, and the 0x-P at 10 degrees C RZT treatment is the best for lettuce leaf anthocyanin content.
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Collections - 바이오나노대학 > 식품생물공학과 > 1. Journal Articles
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