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Wyświetlanie 1-15 z 554
Tytuł:
Subfossil seeds of Stratiotes aloides L. in northern and central Poland
Autorzy:
Gałka, Mariusz
Powiązania:
https://bibliotekanauki.pl/articles/2026718.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Stratiotes aloides
subfossil seeds
paleoecology
Holocene
Opis:
Fruc tifi ca tion of Stratiotes aloides L. is very rarely re corded at pres ent. In gen eral, there are only one sex rep re sen ta - tives in each lake ba sin, which sim ply makes gen er a tive re pro duc tion dif fi cult. The subfossil seeds of Stratiotes aloides have been found in five lo cal i ties of biogenic ac cu mu la tion in north ern and cen tral Po land.
Źródło:
Studia Quaternaria; 2010, 27; 11-15
1641-5558
2300-0384
Pojawia się w:
Studia Quaternaria
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Distribution of static pressure of seeds in a shallow model silo
Autorzy:
Horabik, Józef
Molenda, Marek
Powiązania:
https://bibliotekanauki.pl/articles/972716.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
bulk of seeds
silo
pressure
friction
Opis:
The influence of the filling method, the seed size and the aspect ratio on the radial distribution of the vertical pressure on the floor of a shallow model silo and radial distribution of tangent stress within the material was investigated. Three filling methods were applied: central, circumferential and distributed. Seeds of five varieties were used: horse bean, field pea, wheat, vetch, and rapeseed. Vertical pressure on the floor of a shallow bin was found to be influenced by the filling method and the seed size and aspect ratio. A significant dip of vertical pressure in the middle radial location was observed in all tests, except two: central and circumferential filling of rapeseed. Wall friction was mobilized in the highest degree in the case of the central filling, while the lowest was mobilization of friction in the case of the circumferential filling.
Źródło:
International Agrophysics; 2017, 31, 2; 167-174
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of germination and vigor indices associated with Fusarium-infected seeds in pre-basic seeds wheat fields
Autorzy:
Hassani, F.
Zare, L.
Khaledi, N.
Powiązania:
https://bibliotekanauki.pl/articles/65500.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
Seed-borne diseases of wheat such as Fusarium head blight (FHB), a fungal disease caused by several species of Fusarium, results in reduced yield and seed quality. The aim of this study was to identify the Fusarium species, the effect of Fusarium-infected seeds on germination and vigor indices and to determine the location of Fusarium spp. in seeds, as well as to investigate the pathogenicity and variability of aggressiveness of the isolates obtained from pre-basic seeds wheat fields in Iran. According to morphological and molecular characters, the species F. graminearum, F. culmorum, F. avenaceum and F. poae were identified. Among the isolates, F. graminearum was the predominant species with the highest frequency and relative density of 92.9% and 70.9%, respectively. We observed that germination and vigor indices were decreased due to increased Fusarium-infected seeds. Results indicated significant differences among cultivars and seed-borne Fusarium levels. While a higher infection level of Fusarium spp. most commonly occurred in the seed coat, only F. graminearum was observed in embryos. Our study about pathogenicity showed that 77.3% of the Fusarium spp. isolates were not pathogenic and 22.7% isolates of Fusarium spp. were pathogenic or weakly pathogenic. Our results indicated that variability in aggressiveness among isolates of a species and positive correlation may be determined by pathogenicity tests. This is the first time the location of Fusarium spp. in seeds has been identified. It is also the first time that Fusarium-infected seeds in pre-basic seeds wheat fields of Iran have been evaluated.
Źródło:
Journal of Plant Protection Research; 2019, 59, 1
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of Fertilizer Granulates on Ionic and Weight Relations Among Macronutrients in Spring Rape Seeds
Autorzy:
Możdżer, Ewa
Jałoszyński, Stanisław
Powiązania:
https://bibliotekanauki.pl/articles/124794.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
granulates
rape seeds
ionic relations
weight proportions
Opis:
The experiment consisted in testing four fertilizer granulates produced from waste in the vegetation experiment. The waste used to produce granulates included: ash from lignite due to its deacidifying properties, industrial sewage sludge and sawdust due to considerable abundance of nutrients for plants. The recipe for the chemical composition of granulates was devised on the basis of chemical properties of the waste. The fertilizer granulates were characterized by fairly high content of calcium and organic carbon, and less of sulfur, phosphorus, potassium and magnesium. The contents of heavy metals did not exceed the permissible standards. The test plant was rapeseed of Larissa cultivar. The content of macronutrients was determined in rape seeds. The following ionic relations K:Mg, K:Ca, K:(Ca+Mg), Ca:Mg and weight proportions Ca:P and N:S, were calculated. The research indicated that the applied single doses of fertilizer granulates A, B, C and D significantly expanded the Ca:Mg ion relations, but did not affect the increase in K:Ca, K:(Ca+Mg), N:S and Ca:P in rape seeds compared to the control. Double doses of granulates compared to the single ones resulted in a significant narrowing of the ionic ratio K:Ca and significant extension of Ca:Mg and N:S in the seeds of the test plant. Triple doses of fertilizer granulates significantly reduced the ionic relations K:Ca, K:(Ca+Mg) and N:S, but did not cause changes in the Ca:Mg and Ca:P ratio in rape seeds. The aim of the study was to determine the impact of 4 granulates produced from waste on the formation of the most important ionic ratios and weight proportion of elements in the yields of spring rape seeds.
Źródło:
Journal of Ecological Engineering; 2019, 20, 5; 52-58
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Physicochemical properties determining the cooking time of pea (Pisum sativum L.) seeds.
Autorzy:
Prusiński, Janusz
Strychalska, Agnieszka
Powiązania:
https://bibliotekanauki.pl/articles/2199100.pdf
Data publikacji:
2007-06-20
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
cooking time
pea cultivars
physicochemical properties of seeds
Opis:
Undamaged pea seeds of Agra, Wenus, Kwestor, Bursztyn, Rola, Turkus, Set, Kujawski and Ramrod cultivars divided into 3 size fractions were evaluated for physicochemical properties, the rate of fresh weight increments, leachate electroconductivity as well as cooking time. In Kujawski, Turkus, Bursztyn and Ramrod cultivars or in the case of small seeds, the mean fresh weight increments during seed incubation in water were greater, while in Set and in the case of large seeds, the increments were smaller.
Źródło:
Plant Breeding and Seed Science; 2007, 55; 19-30
1429-3862
2083-599X
Pojawia się w:
Plant Breeding and Seed Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of 660 nm laser irradiation of soybean seeds on germination, emergence and seedling growth
Autorzy:
Yuri, S.
Jarbas, C.
Powiązania:
https://bibliotekanauki.pl/articles/2083819.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
seed biostimulation
laser diode
soybean seeds
agriculture
indoor greenhouse
Opis:
The aim of the experiments was to study the influence of irradiating soybean seeds (Glycine max, cultivar BRS 537) with a 660 nm laser diode array. The seeds were treated with laser light provided by a device assembled for the experiments with a power output of I = 3.5±0.2 mW cm–2. The effects of biostimulation were analysed by determining the germination percentage and dry mass of normal seedlings in a germination experiment. Also, the seedlings emergence percentage, emergence rate and mean emergence time were determined in an indoor greenhouse experiment. The irradiation of the seeds with laser light showed the effects of positive biostimulation for two of the three treatments with light when compared to the control (without irradiation). The light dose of 1.6 J cm–2 (t = 457.14 s) significantly increased the germination percentage (5.5%), dry mass (58%) and emergence rate (29%) of normal seedlings and reduced the mean emergence time by 10%, while a dose of 3.2 J cm–2 (t = 914.28 s) significantly increased the dry mass (84%) and emergence rate (13%) at p-value ≤ 0.05.
Źródło:
Acta Agrophysica; 2021, 28; 5-18
1234-4125
Pojawia się w:
Acta Agrophysica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Correlations between germination capacity and selected physical properties of perennial ryegrass cv. Maja seeds
Autorzy:
Kaliniewicz, Z.
Jadwisieńczak, K.
Jadwisieńczak, B.
Potkaj, Ł.
Powiązania:
https://bibliotekanauki.pl/articles/297989.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie
Tematy:
seeds
physical parameters
germination rate index
correlation
Opis:
Perennial ryegrass is one of the most valuable pasture grasses. The species is recommended for sodding various types of land in Poland due to its fast growth and the ability to produce large numbers of vegetative shoots. Seedling emergence and biomass yield are largely determined by seed quality. This study analyzes the correlations between the basic physical properties of seeds of perennial ryegrass cv. Maja and their germination capacity. The basic dimensions (length, width and thickness) and mass of each of the 150 seeds were determined, and their arithmetic mean diameter, geometric mean diameter, aspect ratio, sphericity index and density were calculated. The seeds were germinated for 14 days, and the results were recorded daily, which enabled to determine germination time for each seed. The relationships between the evaluated parameters were determined by the Student’s t-test for independent samples and correlation analysis. The analyzed physical properties of seeds had no significant effect on the germination rate index. Germinated and non-germinated seeds differed significantly in width, length and arithmetic mean diameter, but they should not be sorted based on their plumpness to improve the quality of seed material because it could lead to a high loss of viable seeds.
Źródło:
Technical Sciences / University of Warmia and Mazury in Olsztyn; 2016, 19(1); 5-16
1505-4675
2083-4527
Pojawia się w:
Technical Sciences / University of Warmia and Mazury in Olsztyn
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Turnover of cell wall components during sink development in seeds of three cotton genotypes
Autorzy:
Sharma, R.K.
Thaker, V.S.
Powiązania:
https://bibliotekanauki.pl/articles/2199019.pdf
Data publikacji:
2006-06-22
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
Cotton seeds
Gossypium Pectic substances
Sink size
Water amount
Xyloglucans
Opis:
Size of the cells in developing seed is one of the major factors that regulate yield potentials. Seed of three cotton genotypes, Gossypium hirsutum. L cv (H-4; H-8) G. herbaceum L. cv (G. Cot-15) exhibits variation in their final seed size (large, middle and smaller) were studied for growth and changes in cell wall components during entire period of seed development. High and low molecular weight xyloglucan contents were extracted with 1M and 4M alkali, respectively. Initially the high and low molecular weight xyloglucan contents remained low and increased when cell size stabilized. Changes in esterified and non-esterified pectic substances were also fractionated from the cell wall of developing seed and theirs role in cell elongation phase is discussed. It was observed that bigger seed has higher xyloglucan contents than that of middle and smaller sized seed. Pectic substances were higher during elongation phase in all genotypes. The role of these polysaccharides in sink size development is discussed.
Źródło:
Plant Breeding and Seed Science; 2006, 53; 9-16
1429-3862
2083-599X
Pojawia się w:
Plant Breeding and Seed Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impact of Dr Green Prime seed fertilizer on the germination energy and ability of wheat seeds
Autorzy:
Gorzelany, J.
Matłok, N.
Dziura, M.
Witek, G.
Migut, D.
Powiązania:
https://bibliotekanauki.pl/articles/411124.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Oddział w Lublinie PAN
Tematy:
fungicide
kernels
seed dressing
seeds
Opis:
The essence of the seed preparation process is the treatment of seed to protect plants against soil pathogens or seed-borne pathogens, as well as against pests attacking plants. Seed fertilizers are mineral fertilizers containing nutrients that, when applied to seed during seed preparation, become readily available to the developing root system during germination and initial plant growth. The purpose of this work was to evaluate the effect of Dr Green Prime seed fertilizer on energy and germination ability of wheat. Within the work wheat seeds in 5 variants were analysed, e.g., with the application of Dr Green Prime seed fertilizer, seed dressing A and fungicide A. The most kernels have germinated in the variant that has been treated with seed dressing A and Dr Green Prime. Only a small level of mould infestation or absence of the infestation was observed for seeds treated with seed dressing A. Aside from germination energy, ability and the level of infestation with moulds, the cotyledons and roots were weighed 12 days after the start experiment. The greatest mass of cotyledons and roots was observed for treatment with seed dressing A and Dr Green Prime 5.5 and 1.7 g, respectively.
Źródło:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes; 2017, 6, 4; 33-40
2084-5715
Pojawia się w:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of processing on nutritional quality of bean seeds (Phaseolus vulgaris L.)
Wpływ przetwórstwa na wartość odżywczą nasion fasoli (Phaseolus vulgaris L.)
Autorzy:
Kosson, R.
Bakowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/1398755.pdf
Data publikacji:
1986
Wydawca:
Instytut Rozrodu Zwierząt i Badań Żywności Polskiej Akademii Nauk w Olsztynie
Tematy:
oligosaccharides
bean seeds processing
Opis:
Studies on the oligosaccharides content, raffinose and stachyose in the bean seeds were carried out and the effect of soaking and cooking on their content in four varieties of bean cultivated for dry seeds was examined. Protein and dry matter losses during processing were also evaluated. It was found that the bean soaking and cooking in water resulted in a reduction of raffinose and stachyose content in the seeds up to 50% and of protein up to 10%. Protein losses at increasing soaking temperature were inversely proportional to the protein losses during subsequent cooking of the bean.
Przeprowadzono badania nad wpływem moczenia i gotowania nasion na zawartość oligosacharydów, rafinozy oraz stachiozy w 4 polskich odmianach fasoli uprawianej na suche ziarno: Piękny Jaś, Biała Wyborowa, Słowianka i Igołomska. Określono również wpływ temperatury moczenia: 20, 30 i 40°C oraz dalszego gotowania na straty białka i suchej masy w fasoli. Zawartość rafinozy w nasionach suchych wahała się - zależnie od odmiany - od 0,24 do 0,70%, a stachiozy od 2,00 do 2,50%. Stopień ekstrakcji tych cukrów z nasion w czasie moczenia i gotowania zależał od odmiany fasoli i sięgał 50°/o wyjściowej zawartości tych cukrów (tab. 1). Wzrost temperatury moczenia wpływał na wyższe straty białka i suchej masy. Straty białka wahały się od 0,89 do 10,74% (tab. 2), a suchej masy od 0,69 do 12,12% (tab. 3). Straty białka przy wzroście temperatury moczenia nasion niektórych odmian fasoli były odwrotnie proporcjonalne do wielkości strat białka w czasie dalszego gotowania.
Źródło:
Acta Alimentaria Polonica; 1986, 12, 3-4; 197-204
0137-1495
Pojawia się w:
Acta Alimentaria Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dynamic load effect on quality of horse bean seeds and lupin seeds
Wplyw obciazen dynamicznych na jakosc nasion bobiku i lubinu
Autorzy:
Siwilo, R
Wrona, T
Powiązania:
https://bibliotekanauki.pl/articles/794229.pdf
Data publikacji:
1993
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
nasiona
lubin
jakosc
bobik
obciazenia dynamiczne
Opis:
The influence of striking action on the germinative energy and germination capacity of seeds was examined. On the basis of statistical analysis it has been found that seed moisture content was the most important factor influencing these factors; the striking element speed was less significant. Optimal moisture content for combine-harvesting is amounts 18 % to 20%.
Celem podjętych w 1986 r. badań była ocena wpływu obciążeń dynamicznych na wielkość uszkodzeń oraz dalszą żywotność nasion bobiku i łubinu. Stwierdzono, iż wzrost obciążeń dynamicznych, wyrażony prędkością elementu udarowego, przy stałym poziomie wilgotności, wywołuje przyrost całkowitej ilości uszkodzeń nasion. Zaś przy stałym poziomie prędkości i w miarę wzrostu wilgotności, całkowita liczba uszkodzeń ulega zmniejszeniu. W wyniku obciążeń dynamicznych, na skutek powstałych uszkodzeń, zmienia się zdolność i energia kiełkowania nasion.
Źródło:
Zeszyty Problemowe Postępów Nauk Rolniczych; 1993, 399; 203-207
0084-5477
Pojawia się w:
Zeszyty Problemowe Postępów Nauk Rolniczych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Yamuna river water treatment using a natural coagulant of Citrullus lanatus seeds
Autorzy:
Singh, Pratham
Saxena, Isha
Powiązania:
https://bibliotekanauki.pl/articles/1031866.pdf
Data publikacji:
2020
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Citrullus lanatus
Yamuna river
natural coagulant
physicochemical treatment
water treatment
watermelon seeds
Opis:
The aim of this study is to evaluate the potential of Citrullus lanatus seeds (a natural coagulant) also known as Watermelon seeds in treating Yamuna River Water. The problem of water scarcity in developing nations requires an economical and feasible water treatment process like coagulation. The watermelon seeds were analyzed on different physicochemical water treatment parameters. To understand the efficiency of the coagulant; a jar test was conducted by varying dosage, mixing speed, pH, and temperature. At an optimum coagulant dosage of 250 mg/L, pH of 7, stirring speed of 100 rpm, and temperature of 30 °C, the maximum turbidity removal of 81% was observed. The study concludes that the Citrullus lanatus seeds can be used as an effective natural coagulant for water treatment in developing countries.
Źródło:
World Scientific News; 2020, 149; 52-63
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Regulatory redox state in tree seeds
Autorzy:
Ratajczak, E.
Dietz, K.J.
Powiązania:
https://bibliotekanauki.pl/articles/59087.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Botaniczne
Opis:
Peroxiredoxins (Prx) are important regulators of the redox status of tree seeds during maturation and long-term storage. Thioredoxins (Trx) are redox transmitters and thereby regulate Prx activity. Current research is focused on the association of Trx with Prx in tree seeds differing in the tolerance to desiccation. The results will allow for better understanding the regulation of the redox status in orthodox, recalcitrant, and intermediate seeds. The findings will also elucidate the role of the redox status during the loss of viability of sensitive seeds during drying and long-term storage.
Źródło:
Acta Societatis Botanicorum Poloniae; 2017, 86, 4
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 554

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