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1

Influence of auxin physiological analogues on IAA metabolism during cold acclimation

100%
Jankauskiene J., Anisimoviene N.
Acta Physiologiae Plantarum
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2016
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tom 38
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nr 01-10th International Conference Plant Functioning under Environmental Stress...
2
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Effects of peat and peat-zeolite substrates on quality, growth indices of cucumber seedlings and crop productivity

81%
Jankauskiene J., Brazaityte A., Kairiene V. V., Zalatorius V.
Acta Scientiarum Polonorum. Hortorum Cultus
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2019
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tom 18
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nr 5
The objective of this study was to evaluate the peat and zeolite mixtures substrates performance on cucumber seedling quality and crop yield. The research was carried out in a greenhouse covered with double polymeric film at the Institute of Horticulture, Lithuanian Research Centre for Agriculture and Forestry. Cucumber seedlings were grown in different substrates: peat, peat + zeolite 1 : 1, peat + zeolite 2 : 1, peat + zeolite 3 : 1 and peat + zeolite 4 : 1. Cucumber seedlings grown in peat and zeolite substrates are shorter; the leaf area is smaller than that of the seedlings grown in peat alone. The dry mass of the aboveground part of these seedlings is lower (insignificant difference), however, the root mass is higher than those grown in peat alone. The addition of zeolite to peat substrate does not have any positive effect on the photosynthesis pigment content in cucumber seedling leaves. The physiological growth indices of the seedlings grown in peat-zeolite substrates were lower compared to those grown in peat. When zeolite is added to peat substrate, net assimilation rate is higher compared to those grown in peat. Higher yields (significant difference) were demonstrated by cucumbers, the seedlings of which had been grown in peat-zeolite substrates.
3
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Effect of transplant growth stage on tomato productivity

81%
Jankauskiene J., Brazaityte A., Bobinas C., Duchovskis P.
Acta Scientiarum Polonorum. Hortorum Cultus
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2013
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tom 12
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nr 2
Transplant quality of tomato depend on such factors as microclimate parameter, substrate, plant nutrition and other. The growth stage is very important indices of their quality. The objective of research was to determine the effect of the growth stage of tomato transplants on their quality and yield. Research was carried out in a greenhouse of the Institute of Horticulture, Lithuanian Research Centre for Agriculture and Forestry in the period of 2008–2010. The investigated transplant growth stage of tomato cv. Cunero F1 5–6 leaves, 7–8 leaves and 9–10 leaves. Tomato transplants with 9–10 leaves were elongated and their leaves area were the highest. Plants with 7–8 leaves according to stem and leaves ratio were qualitative, accumulated in leaves the highest content of photosynthetic pigments and had the highest SLA. Tomato transplanted with older transplant started to flower the fastest compared to 5–6 leaves transplant. Higher total yield was produced by 7–8 leaves transplants. The least early yield was produced by 5–6 leaves transplant. The growth stage of tomato transplants had no effect on the average tomato fruit weight.
4

Phenolics, antioxidative activity and characterization of anthocyanins in berries of blackcurrant interspecific hybrids

61%
Anisimoviene N., Jankauskiene J., Jodinskiene M., Bendokas V., Stanys V., Siksnianas T.
Acta Biochimica Polonica
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2013
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tom 60
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nr 4
The interest in phenols and anthocyanins has increased due to their antioxidant properties and to their potential usage as dietary antioxidants in human nutrition. Total phenols and anthocyanin content, composition and stability in berry extracts of blackcurrant interspecific hybrids, and antioxidative activity of extracts was evaluated. Berries of interspecific hybrids accumulated 530 to 614 mg 100 g-1 FW of total phenolic compounds, while 621 mg 100 g-1 FW of phenolics was established in berries of control Ribes nigrum cultivar 'Ben Tirran'. 'Ben Tirran' berries accumulated 444 mg 100 g-1 FW of anthocyanins and higher amount was identified in berries of interspecific hybrids No. 11-13 (R. nigrum × R. petraeum) and No. 57 (R. nigrum × R. aureum), 522 and 498 mg100 g-1 FW respectively. Berry extracts of hybrid No. 11-13 distinguished by the highest antioxidative activity (80%) and it was higher than antioxidant activity of 'Ben Tirran' (70%). Antioxidative activity of all tested berry extracts (70-80%) was twice higher compared to synthetic antioxidant BHT (39%). However correlation between phenolics or total anthocyanin content and antioxidative activity degree was not established. Amount of cyanidin 3-O-glucoside and cyanidin 3-O-rutinoside in berries of hybrids No. 57, No. 11-13 and No. 8 ((R. nigrum × R. americanum) × (R. nigrum × R. americanum)) was higher than in berries of 'Ben Tirran'. It was established that cyanidins are more stable anthocyanins in all studied temperature and irradiation conditions. Therefore interspecific hybrids No. 57 and No. 11-13 were the most agronomically valuable hybrids.
5

The response of winter oilseed rape to potrescine and low temperature treatment

61%
Jankovska-Bortkevic E., Koryzniene D., Jurkoniene S., Gaveliene V., Jankauskiene J., Mockieviciute R.
Acta Physiologiae Plantarum
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2018
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tom 40
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nr 11-11th International Conference Plant Functioning under Environmental Stress...
6
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Cultivation of sweet pepper (Capsicum annuum L.) transplants under high pressure sodium lamps supplemented by light-emitting diodes of various wavelengths

51%
Bagdonaviciene A., Brazaityte A., Virsile A., Samuoliene G., Jankauskiene J., Sirtautas R., Sakalauskiene S., Miliauskiene J., Marockiene N., Duchovskis P.
Acta Scientiarum Polonorum. Hortorum Cultus
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2015
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tom 14
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nr 6
In greenhouses, artificial lighting is applied in winter and early spring as sup-plementary light source to increase photosynthesis and plant growth. The objective of this study was to evaluate the cultivation of sweet pepper transplants under LED lamps that were developed to supplement HPS lamps used in greenhouses. The experiments were carried out in the greenhouses at the Lithuanian Research Centre for Agriculture and For-estry Institute of Horticulture. Sweet peppers (Capsicum annuum) L. cultivar ‘Reda’ and the hybrid ‘Figaro’ F1 were used for investigation. Four types of solid-state lamps were used with light-emitting diodes (LEDs) with peak emissions at blue 455 nm and 470 nm, cyan 505 nm, and green 530 nm. PPFD of each type of LED lamp was 15 μmol m-2 s-1, and the PPFD of HPS lamps was 90 μmol m-2 s-1. The reference transplants were grown under the illumination of HPS lamps (110 μmol m-2 s-1). The photoperiod of artificial lighting was maintained at 18 hours. Our experiments revealed different responses to sup-plemental LED lightings between the cultivar and the hybrid. The supplemental 470 nm illumination with HPS lamps mostly resulted in increases in the following areas: leaf area, fresh and dry weight, and the photosynthetic pigment content of the sweet pepper ‘Reda’ transplants. A similar positive effect was determined using supplemental 455 and 505 nm LED lights. However, the supplemental green 530 nm LED lights had no effect on growth, and they inhibited the development of the sweet pepper ‘Reda’ transplants. The HPS light had a positive effect on the growth parameters of the ‘Figaro’ F1 transplants, but all of the supplemental LED lights suppressed their growth and development
7
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Impact of CO2 on quality of baby lettuce grown under optimized light spectrum

51%
Sirtautas R., Samuoliene G., Brazaityte A., Sakalauskaite J., Sakalauskiene S., Virsile A., Jankauskiene J., Vastakaite V., Duchovskis P.
Acta Scientiarum Polonorum. Hortorum Cultus
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2014
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tom 13
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nr 2
The cost and yield are two the most important criteria in agriculture by which optimization of environmental factors are needed to carry out. In the present study, we investigated the efficient lighting spectrum and elevated CO2 concentration for cultivating healthier plants more rapidly. One of the aims of our study is to optimize LEDs light spectrum for healthier vegetable production in greenhouses and maximum economical benefits for growers. The impact of elevated carbon dioxide (CO2) concentration on antioxidant and nutritional properties of green leaf ‘Multigreen 3’ and red leaf ‘Multired 4’ baby leaf lettuce (Lactuca sativa L.), grown under optimized light spectrum was investigated. CO2 concentrations of 0.963 g · dm-3and 1.938 g · dm-3 were maintained in the growth chambers. Lettuce was grown under four wavelength (640, 455, 660 and 735 nm) light-emitting diode based (LED) illumination. Under 0.963 g · dm-3 CO2 conditions, ‘Multired 4’ lettuce represented higher antioxidant value due to higher ascorbic acid, anthocyanin, tocopherol contents and higher sucrose concentration, as compared to ‘Multigreen 3’ lettuce. Higher CO2 concentration (1.938 g · dm-3) had uneven effect on the quality of both baby leaf lettuce cultivars. Red leaf lettuce reacted to the higher CO2 level by lowered D tocopherol, ascorbic acid concentrations and significantly higher glucose contents in their leaves, when green leaf lettuce – contrarily – contained higher ascorbic acid and D tocopherol concentrations under 1.938 g · dm-3 of CO2.
8
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Effect of supplemental UV-A irradiation in solid-state lighting on the growth and phytochemical content of microgreens

42%
Brazaityte A., Virsile A., Jankauskiene J., Sakalauskiene S., Samuoliene G., Sirtautas R., Novickovas A., Dabasinskas L., Miliauskiene J., Vastakaite V., Bagdonaviciene A., Duchovskis P.
International Agrophysics
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2015
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tom 29
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nr 1
In this study, we sought to find and employ positive effects of UV-A irradiation on cultivation and quality of microgreens. Therefore, the goal of our study was to investigate the influence of 366, 390, and 402 nm UV-A LED wavelengths, supplemental for the basal solid-state lighting system at two UV-A irradiation levels on the growth and phytochemical contents of different microgreen plants. Depending on the species, supplemental UV-A irradiation can improve antioxidant proper­ties of microgreens. In many cases, a significant increase in the investigated phytochemicals was found under 366 and 390 nm UV-A wavelengths at the photon flux density (12.4 μmol m-2 s-1). The most pronounced effect of supplemental UV-A irradiation was detected in pak choi microgreens. Almost all supplemental UV-A irradiation treatments resulted in increased leaf area and fresh weight, in higher 2,2–diphenyl–1–picrylhydrazyl free-radical scavenging activity, total phenols, anthocyanins, ascorbic acid, and α-tocopherol.
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