scholarly journals Dynamics of alfalfa seed hardness change depending on the seed storage time

2020 ◽  
pp. 46-49
Author(s):  
S. A. Ignatiev ◽  
A. A. Regidin ◽  
T. V. Gryazeva ◽  
K. N. Goryunov
Keyword(s):  
Storage Time ◽  
Seed Storage ◽  
Lower Percentage ◽  
Standard Variety ◽  
Significant Excess ◽  
Seed Hardness ◽  
Alfalfa Seed ◽  
The Usa ◽  
Hardness Change ◽  
Perennial Legumes

A significant part of perennial legumes seeds, including alfalfa, after ripening, has a seed coat nonpermeable for water and air, and therefore they do not germinate immediately after sowing. This property is called seed hardness. The purpose of our research was to study seed hardness of the alfalfa samples in the collection of the FSBSI “ARC “Donskoy” depending on the seed storage time. The seed hardness of the studied varieties after 1 month of storage ranged from 31 to 74% on average for two years. The varieties “Sonora 76” (the USA) and “Stavropolskaya 430” (Russia) possessed the highest value of the studied trait (62% and 74%, respectively). The seed hardness of the standard variety “Rostovskaya 90” was 49.5%. After 6 months of storage, the percentage of seed hardness in all studied varieties significantly decreased. The studied indicator of the standard variety “Rostovskaya 90” decreased to 24%. The varieties “Smuglyanka” (Ukraine), “Zvezdochka” (Russia), “Veko” (Canada), “Admiral” (Canada), “Verta+” (Canada), “AZNIHI-5” (Azerbaijan), “Tashkentskaya 1” (Uzbekistan), “Karlygash” (Kazakhstan) with the indicators from 7% to 13% had a significantly lower percentage of seed hardness compared with the standard variety. The varieties “Sonora 76” (USA) and “Stavropolskaya 430” (Russia), with seed hardness of 38.5% and 49%, respectively, significantly exceeded the standard variety “Rostovskaya 90”. After 12 months of storage, seed hardness of the studied varieties ranged from 4 to 22.5%. The indicator for this trait of the variety, taken as a standard was 16.5%. A significantly lower percentage of seed hardness (from 3% to 10%) was in 12 studied varieties, the lowest indicator was shown by the variety “Zvezdochka” (Russia). The two varieties “Sonora 76” (USA) and “Stavropolskaya 430” (Russia) showed a significant excess with indicators of 21.5% and 22.5%, respectively.

scholarly journals Food allergy: nuts and tree nuts

2006 ◽  
Vol 96 (S2) ◽  
pp. S95-S102 ◽  
Author(s):  
Jesus F. Crespo ◽  
John M. James ◽  
Consuelo Fernandez-Rodriguez ◽  
Julia Rodriguez
Keyword(s):  
Food Allergy ◽  
Dietary Habits ◽  
Storage Proteins ◽  
Seed Storage ◽  
Seed Storage Proteins ◽  
Cross Reactivity ◽  
Severe Reaction ◽  
Immunological Mechanism ◽  
Pathogenesis Related Protein ◽  
The Usa

Nuts are a well-defined cause of food allergy, which affect approximately 1 % of the general population in the UK and the USA. There do appear to be differences in the frequency of nut allergy between different countries because of different dietary habits and cooking procedures. For example, in the USA and France, peanuts are one of the most frequent causes of food allergy, but in other countries, it seems to be less common. Genetic factors, in particular, appear to play a role in the development of peanut allergy. While the majority of nut allergens are seed storage proteins, other nut allergens are profilins and pathogenesis-related protein homologues, considered as panallergens because of their widespread distribution in plants. The presence of specific IgE antibodies to several nuts is a common clinical finding, but the clinical relevance of this cross-reactivity is usually limited. Allergic reactions to nuts appear to be particularly severe, sometimes even life-threatening, and fatal reactions following their ingestion have been documented. Food allergy is diagnosed by identifying an underlying immunological mechanism (i.e. allergic testing), and establishing a causal relationship between food ingestion and symptoms (i.e. oral challenges). In natural history investigations carried out in peanut-allergic children, approximately 20 % of the cases outgrew their allergy or developed oral tolerance. The treatment of nut allergies should include patient and family education about avoiding all presentations of the food and the potential for a severe reaction caused by accidental ingestion. Patients and families should be instructed how to recognise early symptoms of an allergic reaction and how to treat severe anaphylaxis promptly.

scholarly journals Physiological quality of pink pepper seeds (Schinus terebinthifolia Raddi.) as a function of storage

2021 ◽  
Vol 38 (1) ◽  
pp. 144-157
Author(s):  
Thaísa De Oliveira Silveira ◽  
Madelon Rodrigues Braz ◽  
Gilmara Pires de Moura Palermo ◽  
Tiago Böer Breier
Keyword(s):  
Moisture Content ◽  
Storage Time ◽  
Storage Period ◽  
Seed Storage ◽  
Dry Weight ◽  
Native Forest ◽  
Alternative Source ◽  
Physiological Quality ◽  
And Storage

Seeds of native forest species for food and seedling production have a growing demand that impacts the need for studies involving seed storage in order to maintain good levels of germination quality. Thus, scientific analyzes that explore the physiological potential of the seeds of these species are necessary, especially for the pink pepper (Schinus terebinthifolia Raddi.), a species used as an alternative source of income for traditional communities and which has been arousing interest due to the consumption of its fruits as a condiment in the national and international market. This work aimed to assess the physiological quality of pink pepper seeds according to the storage period and seed size. The seeds came from a rural settlement, a pioneer in the extraction of pink pepper, in the state of Rio de Janeiro, Brazil. The seeds were evaluated for moisture content, germination, first count, length and dry weight of the germinated seedlings, during the period of time that they remained stored and the size of the seeds. The results allowed to conclude that: i) the germinative percentage of the stored pink pepper seeds decreased over the months; ii) the moisture content of the seeds decreased over the months evaluated iii) the different sizes of seeds did not show differences in germination and storage time and iv) values of length and dry weight of the seedlings did not differ according to the period of storage.

scholarly journals Change in methodology for collection of drinking water intake in What We Eat in America/National Health and Nutrition Examination Survey: implications for analysis

2012 ◽  
Vol 15 (7) ◽  
pp. 1190-1195 ◽  
Author(s):  
Rhonda S Sebastian ◽  
Cecilia Wilkinson Enns ◽  
Joseph D Goldman ◽  
Alanna J Moshfegh
Keyword(s):  
Drinking Water ◽  
Water Intake ◽  
National Health ◽  
Tap Water ◽  
Lower Percentage ◽  
Nutrition Examination Survey ◽  
Cross Sectional ◽  
Health And Nutrition ◽  
The Usa ◽  
Gender Groups

AbstractObjectiveTo provide updated estimates of drinking water intake (total, tap, plain bottled) for groups aged ≥1 year in the USA and to determine whether intakes collected in 2005–2006 using the Automated Multiple-Pass Method for the 24 h recall differ from intakes collected in 2003–2004 via post-recall food-frequency type questions.DesignCross-sectional, observational study.SettingWhat We Eat in America (WWEIA), the dietary intake component of the US National Health and Nutrition Examination Survey (NHANES).SubjectsIndividuals aged ≥1 year in 2003–2004 (n 8249) and 2005–2006 (n 8437) with one complete 24 h recall.ResultsThe estimate for the percentage of individuals who reported total drinking water in 2005–2006 was significantly (P < 0·0000) smaller (76·9 %) than that for 2003–2004 (87·1 %), attributable to a lower percentage reporting tap water (54·1 % in 2005–2006 v. 67·0 % in 2003–2004; P = 0·0001). Estimates of mean tap water intake differed between the survey cycles for men aged ≥71 years.ConclusionsSurvey variables must be examined before combining or comparing data from multiple WWEIA/NHANES release cycles. For at least some age/gender groups, drinking water intake data from NHANES cycles prior to 2005–2006 should not be considered comparable to more recent data.

Expression of 7S and 11 S Alfalfa Seed Storage Proteins in Somatic Embryos

1988 ◽  
Vol 132 (2) ◽  
pp. 134-139 ◽  
Author(s):  
David A. Stuart ◽  
Janet Nelsen ◽  
James W. Nichol
Keyword(s):  
Somatic Embryos ◽  
Storage Proteins ◽  
Seed Storage ◽  
Seed Storage Proteins ◽  
Alfalfa Seed

scholarly journals A Systematic Review and Meta-Analysis of Hospitalised Current Smokers and COVID-19

2020 ◽  
Vol 17 (20) ◽  
pp. 7394 ◽  
Author(s):  
Jesus González-Rubio ◽  
Carmen Navarro-López ◽  
Elena López-Nájera ◽  
Ana López-Nájera ◽  
Lydia Jiménez-Díaz ◽  
...  
Keyword(s):  
Smoking Prevalence ◽  
Meta Analysis ◽  
Underlying Mechanism ◽  
Epidemiological Studies ◽  
Adverse Outcomes ◽  
World Health ◽  
Lower Percentage ◽  
Patient Status ◽  
The Usa ◽  
Health Organization

SARS-CoV-2 is a new coronavirus that has caused a worldwide pandemic. It produces severe acute respiratory disease (COVID-19), which is fatal in many cases, characterised by the cytokine release syndrome (CRS). According to the World Health Organization, those who smoke are likely to be more vulnerable to infection. Here, in order to clarify the epidemiologic relationship between smoking and COVID-19, we present a systematic literature review until 28th April 2020 and a meta-analysis. We included 18 recent COVID-19 clinical and epidemiological studies based on smoking patient status from 720 initial studies in China, the USA, and Italy. The percentage of hospitalised current smokers was 7.7% (95% CI: 6.9–8.4) in China, 2.3% (95% CI: 1.7–2.9) in the USA and 7.6% (95% CI: 4.2–11.0) in Italy. These percentages were compared to the smoking prevalence of each country and statistically significant differences were found in them all (p < 0.0001). By means of the meta-analysis, we offer epidemiological evidence showing that smokers were statistically less likely to be hospitalised (OR = 0.18, 95% CI: 0.14–0.23, p < 0.01). In conclusion, the analysis of data from 18 studies shows a much lower percentage of hospitalised current smokers than expected. As more studies become available, this trend should be checked to obtain conclusive results and to explore, where appropriate, the underlying mechanism of the severe progression and adverse outcomes of COVID-19.

scholarly journals Uji Daya Simpan Benih Jengkol (Pithecellobium Lobatum) Dengan Menggunakan Beberapa Media Simpan

2016 ◽  
Vol 4 (2) ◽  
pp. 69
Author(s):  
Fitri Lestari Manurung ◽  
Melya Riniarti ◽  
Duryat .
Keyword(s):  
Rice Husk ◽  
Storage Time ◽  
Seed Viability ◽  
Seed Storage ◽  
Significant Treatment ◽  
Storage Media ◽  
Effective Media ◽  
Bartlett Test ◽  
Media Storage ◽  
Germinated Seeds

Jengkol (Pithecellobium lobatum) is one of MPTs that is included of Fabaceae Family.  Jengkol seed is counted as recalcitrant, which is could not defend it is viability when it is stored at low temperature and humidity.  The study aims were to determine the effect of storage time and storage media to storability of jengkol seed, storage media effective to  maintain the jengkol seed viability, and the interaction between the storage media and the storage time to jengkol seed.  The reseach design of factorial (3 x 4) in a completely randomized was employed as a research method.  The first factor was the storage time (T) which was consisted of T0 (without storage), T1 (2 weeks of storage), T2 (4 weeks of storage), and T3 (6 weeks of storage). Second factor was storage media (M) which was consisted of M0 (without storage media), M1 (sawdust storage media), and M2 (rice husk storage media).  For each combination treatment was repeated 3 times.  Each unit of experiments consisted of 40 seeds.  The observed variables were germinated seeds in storage, the number of germinated seeds, avarage day to germination and germination power.  Bartlett test was used to figure out the homogenity of datas.  Varians analysis was at least one used to see if there was at least one significant treatment. The smalles significant differences test was used as further test.  The entire data were tested on 5% significant level. The results showed that storage of jengkol seed using rice husk for storage media with storage time of 6 weeks gave the best effect for maintaining the shelf life of the seeds.  The most effective media to maintain the viability of jengkol seeds is rice husk which can defend the jengkol seeds viability up to 6 weeks of storage.  Keywords : jengkol, germination, storage media, storage time

scholarly journals PENGARUH LAMA SIMPAN PADA VIGOR BENIH DAN KECAMBAH SORGUM (Sorghum bicolor [L.] Moench) GENOTIPE KAWALI DAN P/F-10-90A

2020 ◽  
Vol 8 (2) ◽  
pp. 327
Author(s):  
Iska Hartina Anggraini ◽  
Muhammad Kamal ◽  
Eko Pramono ◽  
Kukuh Setiawan
Keyword(s):  
Storage Time ◽  
Seed Viability ◽  
Seed Storage ◽  
Dry Weight ◽  
Seed Vigor ◽  
Primary Roots ◽  
Time Period ◽  
Sprout Length ◽  
Main Plot ◽  
Sorghum Bicolor L

Sorghum is a type of carbohydrate-producing serelia plant. Sorghum has a great potential to be developed in Indonesia.  Seed storing time is the time period of the seed storage before the seed is planted again, while the storage of the seed is carried out with the aim of maintaining seed viability in the save period for as long as possible and can be used for the next planting period.  The purpose of this study was to determine the effect of storage time on seed vigor and sprouts of Kawali and P/F-10-90A genotypes. This research was conducted at the Laboratory of Seed and Plant Breeding, Faculty of Agriculture, University of Lampung, Bandar Lampung which runs from February 2017 until February 2018. This study uses split plot design with 3 group replications. The main plot is the storage time (LS) that was consisted of 0, 4, 8 and 12 months storage time period. Subplot is genotype (G), which consists of Kawali (G1 ) and P / F-10-90A (G2). The results showed that seed vigor and sprouts decreased significantly at 4 and 8 months storage time with the percentage of dead seeds 16.7% and 40.7%, while the percentage of normal strong sprouts at 4 months amounted to 74% for genotype P/ F-10-90A  and 8 months 54% for genotype Kawali.  P/F-10 -90A genotypes have higher seed vigor and sprouts vigor compared to Kawali genotypes as indicated by dead seed variables, strong normal sprouts, normal sprout length canopy, long root primary roots, normal sprouts, dry weight normal sprouts, and normally strong sprouts. The effect of interaction  between storage time and genotype was shown by seed vigor of genotype P/F-10-90-A seedlings which were proven to be superior for 4, 8 and 12-month storage time period.  Excellence of genotype P/F-10-90-A make it can be stored and was allowed to be used as good seed on next season farming.

scholarly journals Experimental seed germination for ex situ conservation of Mexican Podostemaceae

2019 ◽  
Vol 97 (3) ◽  
pp. 413 ◽  
Author(s):  
Valeria Flores-Enríquez ◽  
Guillermo Castillo ◽  
Margarita Collazo-Ortega
Keyword(s):  
Seed Germination ◽  
Storage Time ◽  
Light Quality ◽  
Germplasm Conservation ◽  
Seed Storage ◽  
Germination Percentage ◽  
Seed Banks ◽  
Ex Situ ◽  
Effect Of Temperature ◽  
Collection Site

<p><strong>Background</strong>: Podostemaceae are extremely susceptible to local extinction by habitat loss. Since ~70 % of the river systems in Mexico show some degree of water contamination, it is relevant to generate information about seed storage and germination behavior to design germplasm conservation strategies (<em>e.g</em>., <em>ex situ</em> seed banks) of Mexican podostemads.</p><p><strong>Hypotheses</strong>: Seed germination decreases as seed storage time increases. Further, light quality, temperature and collection site influence similarly the germination response of both species.</p><p><strong>Studied species</strong>: <em>Marathrum foeniculaceum</em> Humb. &amp; Bonpl., <em>Noveloa coulteriana</em> (Tul.)<em> </em>C. Philbrick</p><p><strong>Study site and years of study</strong>: 13 different seeds collections (1996-2013), at four locations in the rivers Horcones and Arroyo del Rincon Jalisco, México. </p><p><strong>Methods</strong>: A germination chamber experiment was performed to evaluate the effect of temperature, light quality and storage time on the germination of both species.</p><p><strong>Results</strong>: Seeds lose viability after nine years of storage. In both species, the time to reach the highest Accumulated Germination Percentage (AGP) was faster in seeds of one-two yr compared to seeds of six-seven yr. <em>N. coulteriana</em> have significant differences in Final Germination Percentage (FGP) between collection rivers. Storage time affects AGP of <em>N. </em>coulteriana more than in <em>M. foeniculaceum.</em></p><p><strong>Conclusions</strong>: Both species can form <em>ex situ</em> seed banks up to 8 yr age in paper bags storage. <em>N. coulteriana</em> is more susceptible to variation in storage conditions compared to <em>M. </em><em>foeniculaceum</em>. Collection site affect seed germination after storing.  Long-term conventional <em>ex situ</em> seed germination storage is not a viable strategy to conserve germplasm of Podostemaceae.</p>

Germination and Seedling Growth of Sorghum (Sorghum bicolor) Hybrids After Seed Storage with Safeners at Varying Humidities

Weed Science ◽  
1994 ◽  
Vol 42 (1) ◽  
pp. 98-102
Author(s):  
Zujie Zhang ◽  
G. Euel Coats ◽  
Albert H. Boyd
Keyword(s):  
Adverse Effect ◽  
Relative Humidity ◽  
Sorghum Bicolor ◽  
Seedling Growth ◽  
Storage Time ◽  
Seed Storage ◽  
Grain Sorghum ◽  
Fresh Weight ◽  
Ungerminated Seed ◽  
Growth Room

Laboratory and growth room experiments were conducted to determine effects of CGA-133205, oxabetrinil, and flurazole on grain sorghum hybrids ‘DeKalb 46’ and ‘DeKalb 48’ after the seed were treated with the herbicide safeners and stored for up to 24 wk at various relative humidity levels. Each safener treatment had an adverse effect on grain sorghum seed as reflected by fewer normal seedlings at 4 d when averaged over storage time and relative humidity levels. Flurazole and oxabetrinil increased the number of ungerminated seed of both hybrids, and 0.4 and 0.8 g ai kg–1CGA-133205 increased ungerminated seed of DeKalb 46. At ≥ 8 wk after storage, a reduction in germination was observed for seed treated with flurazole or oxabetrinil compared to seed stored without safener. This reduction also occurred with 0.4 and 0.8 g kg–1CGA-133205, but only at 24 wk after storage. Each safener treatment minimized reduction in seedling shoot fresh weight by herbicides compared to the no-safener check through 24 wk after storage.

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