Tomātu kvalitātes izmaiņas dažādos audzēšanas apstākļos
2019
Augspole, I., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia). Faculty of Agriculture | Duma, M., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia). Faculty of Food Technology | Alsina, I., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia). Faculty of Agriculture | Dubova, L., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia). Faculty of Agriculture | Sergejeva, D., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia). Faculty of Agriculture
The study uses tomatoes grown in the industrial glass greenhouse complex “Mežvidi” and the experimental polycarbonate greenhouse of the Latvian University of Life Sciences and Technologies (LLU). Tomato varieties ʻDiamantinoʼ F1, ʻEncoreʼ F1, ʻBalzanoʼ F1 and ʻChocomateʼ F1 have been grown in polycarbonate greenhouse, but in “Mežvidi” − ʻBalzanoʼ F1, ʻDiamantinoʼ F1, ʻStralienaʼ F1, ʻChocomateʼ F1 and ʻEncoreʼ F1. LED and High Pressure Sodium (Na) lamps were used to illuminate tomatoes. The LLU greenhouse was also equipped with an induction (IND) lamp, while the greenhouse “Mežvidi” with a high-pressure sodium lamp equipped with an additional blue lamp (Na + blue). The aim of the research was to determine the chemical composition − vitamin C content, total organic acid content and the soluble dry matter content of tomatoes grown in experimental and industrial greenhouse, with lights of different lamps. Tomatoes grown in a polycarbonate greenhouse under HPSL lighting lamps had significantly higher vitamin C content (p is less than 0.05) compared to glasshouse grown tomatoes. In turn, the acid content to be titrated for tomato varieties ʻBalzanoʼ F1 and ʻEncoreʼ F1 in the glass greenhouse complex were higher (p is less than 0.05) than in tomatoes of polycarbonate greenhouse. Soluble dry matter content was significantly higher (p is less than 0.05) in LLU greenhouse tomato varieties.
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