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APPLICATION OF THE MATHEMATICAL MODEL HJ-BIPLOT TO IDENTIFYING THE LINKS AMONG BIOACTIVE COMPOUNDS OF THE TOMATO VARIETY PANEКRA

Published in Scientific Papers. Series B, Horticulture, Vol. LXIV, Issue 1
Written by Nikolay VALCHEV, Miroslava IVANOVA, Antoniya STOYANOVA, Lilko DOSPATLIEV

Samples were collected from the Plovdiv, Bulgaria. The aim of this study was to is to compare the similarity and remoteness of different irrigation regimes: 1. Irrigation regime (50% of irrigation rate) and 50% fertilization; 2. Irrigation regime (75% of irrigation rate) and 50% fertilization; 3. Optimal irrigation regime (M-100%) with 50% fertilization; for the variety Paneкra during the period 2016-2018 year and to identify the link among bioactive compounds of tomatoes through the mathematical model HJ-biplot. An important indicator of the quality of tomatoes is the content of total dyes. The highest values were found in tomato farmed irrigation regime (50% of irrigation rate) where total dyes attained up to 4.95 mg/100 g. The β-carotene content determines the orange color of the tomato fruit. The good combination of the two components (lycopene and β-carotene) with an antioxidant effect determines hybrids of tomatoes such as hybrids of high biological value. In the present study the content β-carotene ranges from 0.26 to 0.35 mg/100 g. The content of β-carotene is higher at a 50% of irrigation rate.

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