3 research outputs found
PHYSICOCHEMICAL CHARACTERISTICS AND MELISSOPALYNOLOGICAL ANALYSIS OF COMMERCIAL BUCKWHEAT HONEYS FROM POLAND
Get PDFBuckwheat honey is widely consumed by consumers due to its numerous health-promoting properties. Characteristically it is dark, tea-like in colour, sharp, tickly, and sweet in flavour, and has smelled of buckwheat flowers. In the current study, various commercial honey samples were examined to test the quality of buckwheat honey samples available in the market. The research materials were comprised of 15 samples of honeys from 4 voivodships, among these, 5 samples were collected from the Świętokrzyskie Voivodship, 4 from the Lesser Poland Voivodeship, 4 from the Lubelskie Voivodship, and reset 2 samples from the Podkarpackie Voivodship. Melissopalynological analyses of investigated honeys’ samples revealed that all samples had at least 45% of Fagopyrym pollen content, which means that researched honeys complied with the standards of the International Commission for Bee Botany (ICBB) for buckwheat honey. Honeys’ samples had an average water content of 15.3% (σ= 1.24), and electrical conductivity at 0.37 mS*cm-1. Therefore, all beekeepers correctly marked their honey type as buckwheat honey simply using the organoleptic properties of their honeys and observing their bees collecting pollen and honeydew
The Effects of Proline on the Yield and Essential Oil Content of Turnip-Rooted Parsley (<i>Petroselinum crispum</i> ssp. <i>tuberosum</i>)
No full textProline is an amino acid that increases plant tolerance to abiotic and biotic stresses, but the effects of its application can be influenced by many factors. The present study investigated the effects of time and the number of applications of this amino acid on the yield of root parsley in field conditions. The experimental material comprised of two parsley cultivars (Petroselinum crispum (Mill.) Nyman ex A.W. Hill), ‘Halblange’ and ‘Sonata’. The parsley plants were sprayed with proline (1000 mg L−1) at growth stages determined according to the BBCH scale: BBCH 15–16 (I: 5–6 leaf phase), BBCH 41 (II: roots start to widen, diameter > 0.5 cm), and BBCH scale 42–43 (III: roots are 20–30% of the typical diameter), including I + II, II + III, and I + II + III. The time and number of proline applications affected the weight of leaves and the total and marketable yield. The amino acid spraying increased the average number of plants during harvest in the ‘Halblange’ but decreased the number in the ‘Sonata’ in all applications. Using proline twice or three times reduced the total essential oil content and modified its composition. The most beneficial effect in terms of the composition was achieved by using proline twice at stages II + III, even in ‘Sonata’, where the values were lower in the other treatments than in the control. Spraying three times did not give better results in terms of the composition and content of the essential oil. However, the use of this amino acid did not affect the total and marketable yield of the roots or the leaf weight of the parsley compared to the control. Our study showed that the time of the proline application may be more important than the number of applications, and the results may be cultivar-dependent
The Effects of Proline on the Yield and Essential Oil Content of Turnip-Rooted Parsley (Petroselinum crispum ssp. tuberosum)
No full textProline is an amino acid that increases plant tolerance to abiotic and biotic stresses, but the effects of its application can be influenced by many factors. The present study investigated the effects of time and the number of applications of this amino acid on the yield of root parsley in field conditions. The experimental material comprised of two parsley cultivars (Petroselinum crispum (Mill.) Nyman ex A.W. Hill), ‘Halblange’ and ‘Sonata’. The parsley plants were sprayed with proline (1000 mg L−1) at growth stages determined according to the BBCH scale: BBCH 15–16 (I: 5–6 leaf phase), BBCH 41 (II: roots start to widen, diameter > 0.5 cm), and BBCH scale 42–43 (III: roots are 20–30% of the typical diameter), including I + II, II + III, and I + II + III. The time and number of proline applications affected the weight of leaves and the total and marketable yield. The amino acid spraying increased the average number of plants during harvest in the ‘Halblange’ but decreased the number in the ‘Sonata’ in all applications. Using proline twice or three times reduced the total essential oil content and modified its composition. The most beneficial effect in terms of the composition was achieved by using proline twice at stages II + III, even in ‘Sonata’, where the values were lower in the other treatments than in the control. Spraying three times did not give better results in terms of the composition and content of the essential oil. However, the use of this amino acid did not affect the total and marketable yield of the roots or the leaf weight of the parsley compared to the control. Our study showed that the time of the proline application may be more important than the number of applications, and the results may be cultivar-dependent
