Influence Of Seeds Research Articles

Influence of Seeds' Age and Clarification of Cold-Pressed Raspberry (Rubus idaeus L.) Oil on the DSC Oxidative Stability and Phase Transition Profiles.

After cold-pressing, small particles of seed residue remain in raspberry seed oil (RSO), even after passing it through cold filtration. The removal of the remaining seed residue is rather an alternative option to improve the visual properties of RSO. This study investigated the influence that the seeds' age (0, 10, 20 months) and clarification process after pressing has on the oxidative stability and phase transition of RSO by means of differential scanning calorimetry (DSC). The results proved that the oil centrifugation process reduces the DPPH radical scavenging activity and oxidative stability measured by p-anisidine value (p-AnV) and DSC oxidation induction time (OIT) at 120 °C of all RSO samples, regardless of the age of the seeds (p ≤ 0.05). No significant differences were observed on the DSC melting and crystallization properties at 1 °C/min after the oil clarification by centrifugation (p > 0.05). The storage time of raspberry seeds, i.e., 10 and 20 months after expiry date, influenced the quality deterioration of RSO, as measured by higher p-AnV, lower DPPH, and OIT values (p ≤ 0.05). The results presented provide new information about oil production processing, suggesting that producers should reconsider giving up the clarification process of oil, since it lowers all quality parameters.

Influence of Seed and Fruit Characteristics of Lagenaria siceraria on Production and Quality of Grafted Watermelon

The use of Lagenaria siceraria rootstocks in watermelon production has favored fruit yield and quality under conditions of environmental stress. However, it is necessary to know if the differential characteristics of fruit and seed L. siceraria are related to watermelon yield and fruit in grafted plant. The objective was to evaluate two dissimilar groups of Mexican L. siceraria as rootstock in Tri-X 33 watermelon variety to relationship the morphological characteristics of rootstock with productive variables and fruit quality. The treatments were Tri-X 313 variety ungrafted and grafted with accessions of group 1 (L46 and L56) and group 2 (L48, L50 and L54). Variables evaluated were fruit and yield and quality parameters. No differences were found between groups of L. siceraria in fruit yield and external quality parameters. With the exception of pulp firmness and luminosity, LG1 surpassed group LG2 by 30.7 and 5.0%, respectively. While, when comparing grafted and ungrafted plants, it was found that grafted plants were superior, with increases of 277.8% in number of fruits per m2, 330.2% in commercial production, 54.6% in rind thickness, 85.2% in external firmness and 36.3% in chroma value of fruit pulp. Meanwhile, pulp percentage and hue were reduced by 13.8% and 15.5%, respectively, in grafted watermelons. Thus, the seed and fruit characteristics are not sufficient criteria to select L. siceraria rootstocks for watermelon production.

Fibrillar calcium silicate hydrate seeds from hydrated tricalcium silicate lower cement demand

Debates remain on the influencing factor and long-term performance of C-S-H-seeded paste. In this study, phase-pure seeds were prepared from diluted Ca3SiO5 hydration. The seed structures were determined using synchrotron-based X-ray diffraction, X-ray absorption spectroscopy, and transmission electron microscopy. Nano-foils and similar Ca and O environments were present in seeds of different Ca/Si; nanofibers were present in high-Ca seeds only which showed lower silicate polymerization. Calorimetry and setting results showed a greater hydration acceleration with high-Ca seeds; seed shape dominated the acceleration. 0.5 wt% high-Ca seeds increased 1- and 28-days paste strength by 300% and 20%, respectively. Life-cycle assessment showed negligible (<1%) influence of seeds on energy demand and CO2 emissions of the paste production. The CO2-intensity normalized by strength of seeded pastes decreases by ~25% at 28 days. This study sheds light on the use of C-S-H seeds from waste concrete and wash water, as a means of lowering cement demand.

PROBLEMS OF COTTON SEED STOCK PRODUCING IN THE VARIETIES OF GOSSYPIUM HIRSUTUM

Radically enhancing of employed technologies on the growing of agricultural crops in Uzbekistan and quality of varieties has become one of the major challenges in the state priority today. Because, in the example of cotton plant as the principle crop, the republic is remaining far behind on cotton raw productivity -12th , and on cotton fiber productivity-29th than cotton producing countries. At this term, the state is a head reformer extending all scientific-technical and organizing measurements for the development of this field. The results on the study of seed stock cotton varieties’ cultivation for two years (2018, 2019) in the Burkhon farm, Navoiy division of Oqqorgon district, Tashkent region were presented in this paper. Planting quality, influences of seeds on the seed sprouting period, field germination of seed stocks, optimal seed stock expenditure, optimal seedling density, plants’ development and dynamics of yield components setting were studied in the field observations. It was identified that the used drill has planted at minimum, from 9 and maximum, up to 29 seeds per 1 m of a row. Coefficient of variation, according to the outcome of statistical analysis on the determination of difference between these two indexes has made of 29.7%. Field germination, height of plants, instability on the plants’ boll numbers and share of contamination in the variety traits of varieties were also analyzed and the necessary recommendations on new innovative ideas and technologies for improving of cotton seed production in grooving varieties and producing of seed stocks were given. KEYWORDS: Cotton, seed, germination, seed stock, technology, sprouts, variety, Sultan, S-6524.

Performance of reactive MgO concrete under increased CO2 dissolution

The strength gain of reactive MgO cement (RMC) samples depends on carbonation, which is limited by the formation of an initial carbonate layer and the low dissolution of CO2. This study investigates the use of seeds and NaHCO3 (SBC) to extend the surface area for carbonation and increase CO2 dissolution, respectively. The influence of seeds and SBC on the hydration kinetics of RMC was evaluated by isothermal calorimetry and pH measurements. Mechanical performance results were supported by XRD, TG-DTG and SEM, which identified the amount and morphology of final phases. The introduction of well-dispersed seeds within the initial mix design enabled the enhanced nucleation of carbonates, while the dissolution of CO2 was improved by the increased initial pH and HCO3– provided by SBC. The simultaneous use of seeds and SBC led to dense microstructures composed of interconnected carbonate networks, resulting in 142% increase in 28-day strengths (24 vs. 58 MPa).

Fruit flesh color due to the quantity of brown specks as affected by the number of seeds in fruits of ‘Fuyu’ persimmon

The terms pollination constant (PC) and pollination variant (PV), respectively, define persimmon cultivars as those exhibiting no change in flesh color due to seed formation in the fruit and as those exhibiting a change due to brown specks by seed formation in flesh color. 'Fuyu' is the most produced persimmon cultivar in the world, and it has been regarded as a PC and non-astringent cultivar (PCNA). A total of 557 and 101 'Fuyu' persimmon fruits were collected in 1981 and 1982, respectively, from trees grown at Akitsu at the National Institute of Japan and were evaluated for the number of seeds contained in each fruit (SN) and scored according to the quantity of brown specks (BS) in the flesh. The regression of the BS scores on seed numbers was positive and highly significant (P<0.001) in both years. These results showed that fruit flesh color was slightly changed by seed formation in the 'Fuyu' fruits. This change was lower than that observed in most PV cultivars. 'Fuyu' seeds exude ethanol and acetaldehyde, which are responsible for the coagulation and oxidation of tannin substances in the flesh in PV cultivars. The slight change of flesh color in 'Fuyu' is possibly caused by these volatile compounds. The results lead to classifying 'Fuyu' into PV in a strict sense of Hume's classification. To eliminate the confusion, we propose that the term “PCNA” should be redefined with a synonym for Kajiura's term of “perfect non-astringent”, i.e., non-astringent at maturity with no influence of seeds, apart from Hume's classification.

Influence of nucleation seeding on the performance of carbonated MgO formulations

The continuation of the hydration and carbonation reactions within reactive MgO cement formulations is inhibited by the formation of hydrate and carbonate phases around MgO particles, resulting in a low MgO utility and limited mechanical performance. This study introduces carbonate seeds into the pore space of MgO-based concrete mixes to enable the nucleation and growth of carbonates on the seed surfaces. The influence of seeds on the hydration and carbonation capability, mechanical performance and microstructural development was evaluated through isothermal calorimetry, water absorption and compressive strength measurements, along with TGA, XRD and SEM analyses. The introduction of ≤1% seed within the initial mix design increased the carbonate phase content and improved carbonation degree by up to 96% by increasing the availability of Mg(OH)2 for carbonation. The dense formation of carbonates in seeded samples enabled improved microstructures and 28-day strengths of 64 MPa, which were 33% higher than unseeded samples.

Influence of Seeds and Roots Extracts and Exudates of Bean Plant on Growth of Some Pathogenic Fungi

Extracts and exudates of seeds and roots of plant play a role in plant health and attracted the pathogen to the host. This study was conducted the effect of extract and exudates from bean seeds and roots on fungal growth of Botrytis cinerea, Macrophomina phaseolina and Rhizoctonia solani. Chemical analysis of extract and exudates was also studied. Seed and root extracts and exudates obtained from Libyan cv. gave the most stimulating effect on the mycelia growth of all tested fungi in a descending order, than those extracted and exuded from seeds and roots of the Giza-6 cv. In vitro chemical analysis of seed and root extracts and exudates of both cultivars indicated that total amino acids were much higher in Libyan cv. than those in Giza-6 cv., while free and total phenol contents were much greater in the seed and root extracts and exudates of Giza-6 cv. compared with those from Libyan cv.

Influences of Seeds on the Properties of Zeolite NaA Membranes on Alumina Hollow Fibers

The influences of size (90–1500 nm) and amount (1–4 wt %) of as-synthesized seed crystals on the properties of zeolite NaA membranes on alumina hollow fibers are investigated. Seeds and membranes a...

Influence of seeds on the synthesis of TS-1 with inorganic materials

TS-1 with relatively small crystal sizes (0.4-1.5 µm) was synthesized using inorganic sources of Ti and Si. The effects of conditions in the preparation of seeds on the synthesized zeolites were studied.

Influence of the Seeds on Aroma of Muskmelon (Cucumis melo L.).

The influence of seeds on aromatic volatile compounds in muskmelon (Cucumis melo L. cv. Crest Earl's) fruit was investigated. There were little or no differences in sensory evaluations of aroma in pollinated fruits, whether the melons were treated with CPPU (PC treatment) or not (P treatment) ; but the sensory evaluation scores of pollinated fruit were significantly higher than those of parthenocarpic fruit (emasculated female flower treated with CPPU, EC treatment). In the sniffing experiments conducted by a sniff-GC, pollinated fruits were perceived as having a favorable aroma described as melon-like, fruity, sweet, milk-like, caramel-like, flower, coconut milk, milk coffee, and cake-like. Parthenocarpic fruit, however, was perceived as having offensive odors described as green, bitter, burnt, medicinal, smelly old socks, and oil-like. Therefore, it was speculated that seeds may be involved in the formation of aroma in melon fruit.

Influence of the LiNbO 3 and KNbO 3 Seeds on the Sintering and Electrical Properties of PMN Ceramic

The effect of LiNbO 3 and KNbO 3 seeds on the microstructure and dielectric characteristics of PMN ceramic prepared by columbite route have been investigated with the addition of 0, 1, and 2-wt% of seeds. X-ray diffraction, Scanning Electron Microscopy and an impedance analyzer were used to characterize the influence of seeds on physical characteristics and dielectric properties of PMN. LiNbO 3 -seeded PMN samples present a significant increase in the amount of perovskite phase. The addition of LiNbO 3 seeds in sintered PMN ceramics at 1100@C during 4 h causes a decrease in the porosity and the amount of pyrochlore phase. Weight losses during sintering of PMN ceramics are suppressed more significantly for LiNbO 3 -seeded PMN. T m of PMN ceramics changes with seeds concentration. KNbO 3 seeds displace T m to lower temperature whereas LiNbO 3 causes its elevation. Dielectric constants of approximately 13,000 at 1 kHz was measured at m 5°C in PMN ceramics with 1-wt% of LiNbO 3 seeds.

Influence of Seed and Root Exudates on Fluorescent Pseudomonads and Fungi in Solarized Soil

We investigated the effect of soil solarization on seed and root exudates of tomato plants and the role of these exudates in the establishment of fluorescent pseudomonads in soil. Seed and root exudates of tomato grown in solarized soil contained lower amounts of sugars and higher amounts of amino acids and amino compounds and were less favorable for growth of bacteria and fungi in culture compared with seed and root exudates of tomato grown in nonsolarized soil. Addition of exudates from germinating seeds into solarized soil, however, increased populations of fluorescent pseudomonads and decreased populations of fungi compared with nonsolarized soil (...)