Hydroponics of Parsley (Petroselinum crispum) in the Plant Factory
| Autor: | Liang-Chou Wei, 魏良州 |
|---|---|
| Rok vydání: | 2015 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 103 Parsley (Petroselinum sativum L.) is a culinary crop rich in vitamin C and E, iron Carotenoid, folic acid and flavonoids. The vitamin K in parsley may be the highest abundant in all vegetables. Parsley is used for cooking, salad, flavoring and essential oil. Curly parsley was grown hydroponically in the plant factory of National Taiwan University to obtain the best seed priming method and cultivation temperature, light intensity and photoperiod. Parsley seeds takes 14~28 days to germinate,which is longer than other leaf vegetable. To improve the rate, uniformity and percentage of germination, 4 priming temperatures, 6 priming water potential and 5 priming times were test. Germination percentage 92% from priming at -2.4 bar for 3 weeks at 15/13 ℃ were significantly the highest, it arrived GT50 in 3 days and final germination percentage was 92%. However, priming at -0.7 bar potential for 1 week at 15℃/13℃ also improved the seed germination rate, uniformity and percentage significantly, it arrived GT50 in 5 days and final germination percentage was 90%. Seedings at 25℃/20℃、water nutrient 1.0 dS‧m-1 EC and Light-Emitting Diode (CW5000) light of 150 μmol‧m-2‧s-1 showed significantly higher yeild. After transplanting, 17℃ and 23℃ exhibited higher fresh weight which were 44.02 g and 35.21 g. Growing at 17℃ had lower dry weight 0.64 g and were recommeded for salad ; Dry weight at 25℃ was higher and recommeded for decorate. 240 μmol･m-2･s-1 light indensity showed the best result which had fresh weight 43.45 g, dry weight 0.81 g, stem number 12.89 and stem length 10.41 cm, nitrite content 2,328.9 ppm was also the lowest. 16 hr/8 hr photoperiod can get better fresh weight and vitamin C content, lower nitrite content. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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