EFFECTS OF TEMPERATURE AND SUNLIGHT ON THE RATE OF ELONGATION OF STEMS OF MAIZE AND GLADIOLUS

1939 ◽  
Vol 17c (11) ◽  
pp. 388-409 ◽  
Author(s):  
A. G. McCalla ◽  
J. R. Weir ◽  
K. W. Neatby
Keyword(s):  
Relative Humidity ◽  
Growth Rates ◽  
Stem Elongation ◽  
Correlation Coefficients ◽  
Positive Association ◽  
Significant Negative Correlation ◽  
Time Of Day ◽  
Depressing Effect ◽  
Significant Positive Association ◽  
Effects Of Temperature

Measurements of the height of the main stems of maize and gladiolus plants were made at four-hour intervals starting at 4 a.m. The increases in elongation were analyzed statistically, together with mean temperature, hours of sunlight, and mean relative humidity.Partial correlation coefficients showed that there was a highly significant positive association between the rate of stem elongation (growth) and temperature, regardless of the time of day, the variations in temperature accounting for from 40 to 70% of the variability in growth rates. There was likewise a significant negative correlation between growth and sunlight, but sunlight was apparently effective only during the midday periods (8 a.m. to 4 p.m.). The depressing effect of sunlight on the growth of gladiolus was approximately four times as great as on maize. This depressing effect on maize was entirely removed by shading the plants with light white cotton.Variations in relative humidity were only slightly associated with growth rates. No significant effect was observed for any of the periods. It seems possible that these factors might be more important under conditions of deficiency in soil moisture.The approximate minimum temperature at which growth look place was 40° F.

scholarly journals Estimation of mean performance and genetic association of yield and yield components traits under rainfed condition in sunflower (Helianthus annuus L.)

2020 ◽  
Vol 5 (02) ◽  
pp. 203-207
Author(s):  
Mohan Vamsi D. ◽  
Sandhyasree G. ◽  
Meena H. P. ◽  
Payasi S. K.
Keyword(s):  
Seed Yield ◽  
Positive Association ◽  
Significant Negative Correlation ◽  
Plant Oil ◽  
Significant Positive Association ◽  
Rainfed Condition ◽  
Head Diameter ◽  
Research Fields ◽  
Volume Weight ◽  
Almost All

The present investigation was carried out at the Research Fields, ICAR-Indian Institute of Oilseeds Research, Rajendranagar, Hyderabad, Telangana, India. The material for present study consisted of twenty newly developed mono and multi headed restorer lines including CMS lines. The data for agronomic and yield traits i.e. days to 50% flowering, days to physiological maturity, plant height, head diameter, volume weight, 100 seed weight, seed yield per plant oil content and oil yield was recorded. The analysis of variance revealed significant differences among the genotypes for almost all characters which favour the selection. Associations among characters especially indicated that among the seven traits studied, seed yield per plant had a highly significant positive association with head diameter and significant negative correlation with days to 50% flowering and days to maturity. The genotypes, COSF-6B, COSF-7B, RGP-11-P1-S2, RGP-58-P4-S1-1 and RGP-46-P3 were identified as the most important genotypes for different traits and should be utilized in heterosis breeding programme to realize high heterosis for yield and yield contributing traits.

scholarly journals Brainstem Correlates of Pathological Laughter and Crying Frequency in ALS

2021 ◽  
Vol 12 ◽  
Author(s):  
Sicong Tu ◽  
Mengjie Huang ◽  
Jashelle Caga ◽  
Colin J. Mahoney ◽  
Matthew C. Kiernan
Keyword(s):  
Gray Matter Volume ◽  
Positive Association ◽  
Executive Dysfunction ◽  
Significant Negative Correlation ◽  
Hierarchical Regression ◽  
Significant Positive Association ◽  
Pseudobulbar Affect ◽  
Pathological Laughter ◽  
Sporadic Als ◽  
Cerebellar Peduncles

Pseudobulbar affect is a disorder of emotional expression commonly observed in amyotrophic lateral sclerosis (ALS), presenting as episodes of involuntary laughter, or crying. The objective of the current study was to determine the association between frequency of pathological laughter and crying (PLC) episodes with clinical features, cognitive impairment, and brainstem pathology. Thirty-five sporadic ALS patients underwent neuropsychological assessment, with a subset also undergoing brain imaging. The Center for Neurological Study Lability Scale (CNS-LS) was used to screen for presence and severity of pseudobulbar affect (CNS-LS ≥ 13) and frequency of PLC episodes. Presence of pseudobulbar affect was significantly higher in bulbar onset ALS (p = 0.02). Frequency of PLC episodes was differentially associated with cognitive performance and brainstem integrity. Notably pathological laughter frequency, but not crying, showed a significant positive association with executive dysfunction on the Trail Making Test B-A (R2 = 0.14, p = 0.04). Similarly, only pathological laughter frequency demonstrated a significant negative correlation with gray matter volume of the brainstem (R2 = 0.46, p < 0.01), and mean fractional anisotropy of the superior cerebellar peduncles (left: R2 = 0.44, p < 0.01; right: R2 = 0.44, p < 0.01). Hierarchical regression indicated brainstem imaging in combination with site of symptom onset explained 73% of the variance in pathological laughter frequency in ALS. The current findings suggest emotional lability is underpinned by degeneration across distinct neural circuits, with brainstem integrity critical in the emergence of pathological laughter.

scholarly journals Low Serum Tryptophan Levels as an Indicator of Global Cognitive Performance in Nondemented Women over 50 Years of Age

2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
Author(s):  
L. A. Ramos-Chávez ◽  
G. Roldán-Roldán ◽  
B. García-Juárez ◽  
D. González-Esquivel ◽  
G. Pérez de la Cruz ◽  
...  
Keyword(s):  
Cognitive Impairment ◽  
Negative Correlation ◽  
Aging Process ◽  
Depression Scale ◽  
Positive Association ◽  
Serum Levels ◽  
Significant Negative Correlation ◽  
Kynurenine Pathway ◽  
Cognitive Screening ◽  
Significant Positive Association

Aging is a physiological decline process. The number of older adults is growing around the world; therefore, the incidence of cognitive impairment, dementia, and other diseases related to aging increases. The main cellular factors that converge in the aging process are mitochondrial dysfunction, antioxidant impairment, inflammation, and immune response decline, among others. In this context, these cellular changes have an influence on the kynurenine pathway (KP), the main route of tryptophan (Trp) catabolism. KP metabolites have been involved in the aging process and neurodegenerative diseases. Although there are changes in the metabolite levels with age, at this time, there is no study that has evaluated cognitive decline as a consequence of Trp catabolism fluctuation in aging. The aim of this study was to evaluate the relation between the changes in Trp catabolism and cognitive impairment associated with age through KP metabolites level alterations in women over 50 years of age. Seventy-seven nondemented women over 50 years old were examined with a standardized cognitive screening evaluation in Spanish language (Neuropsi), Beck anxiety inventory (BAI), and the geriatric depression scale (GDS). Also, serum levels of Trp, kynurenine (Kyn), kynurenic acid (KYNA), and 3-hydroykynurenine (3-HK) and the glutathione ratio (GSH/GSSG) were measured. Results showed a negative correlation between age and Trp levels and a positive correlation between age and KYNA/Trp and 3-HK/Trp ratios. The level of cognitive impairment showed a significant positive association with age and with kynurenine pathway activation and a significant negative correlation with Trp levels. The GSH/GSSG ratio correlated positively with Trp levels and negatively with Kyn/Trp and 3-HK/Trp ratios. The depression score correlated negatively with Trp and positively with the 3-HK/Trp ratio. We concluded that KP activation increases with age and it is strongly associated with the level of cognition performance in nondemented women over 50 years of age.

Association of miR-155, miR-187 and Inflammatory Cytokines Il-10 and TNF-α in Chronic Opiate Abusers

2021 ◽  
Author(s):  
PURVI PUROHIT ◽  
Dipayan Roy ◽  
Shailender Dwivedi ◽  
Naresh Nebhinani ◽  
Praveen Sharma
Keyword(s):  
Inflammatory Cytokines ◽  
Positive Association ◽  
Significant Negative Correlation ◽  
Opioid Use Disorder ◽  
Opioid Use ◽  
Serum Samples ◽  
Significant Positive Association ◽  
Aberrant Expression ◽  
Opiate Abuse ◽  
Tnf Α

Abstract The current study determined levels of inflammatory cytokines TNF-α, IL-6, IL-10 and immune-regulatory miR-155 and miR-187 expressions in chronic opiate abuse. Adults (n = 48), meeting the 5th Edition of the DSM criteria regarding opioid use disorder, and healthy controls (n = 46) were included in the study. Serum samples were analysed for inflammatory cytokines IL-10, IL-6, TNF-α using ELISA and PBMCs processed for miRNA expression using SybrGreen chemistry. Cases showed significantly raised IL-10 and TNF-α and reduced IL-6. Using RNU6 for normalization, dose-dependent corresponding upregulation of miR-155-5p and downregulation of miR-187-5p were evident at opiate dose > 1500 gm/day, with a corresponding increase of TNF-α and IL-10. MiR-155 showed a significant negative correlation with IL-6 and TNF-α; miR-187 showed a significant positive association with TNF-α at > 1000 g/day consumption. Therefore, increasing consumption of opium probably enhances inflammation leading to immunomodulation and aberrant expression of has-miR-155-5p and has-miR-187-5p in opiate abusers.

scholarly journals Physical Activity and Anxiety of Chinese University Students: Mediation of Self-System

2021 ◽  
Vol 18 (9) ◽  
pp. 4468
Author(s):  
Sumaira Kayani ◽  
Tayyaba Kiyani ◽  
Saima Kayani ◽  
Tony Morris ◽  
Michele Biasutti ◽  
...  
Keyword(s):  
Physical Activity ◽  
University Students ◽  
Short Form ◽  
Negative Relationship ◽  
Positive Association ◽  
Significant Negative Correlation ◽  
Significant Positive Association ◽  
Significant Negative Relationship ◽  
Self System

The present study examined the role of self-enhancement and self-criticism in the relationship between physical activity and anxiety. A total of 305 students from Chinese universities, ranging in age from 18 to 36, completed a questionnaire package comprising a physical activity questionnaire, a self-enhancement strategies scale, a level of self-criticism scale, and a short form of state and trait anxiety scale. Findings highlighted that physical activity had a significant negative correlation with anxiety (r = −0.31, p < 0.01), a significant positive association with self-enhancement (r = 0.43, p < 0.01), and a significant negative relationship with self-criticism (r = −0.14, p < 0.05). It was also found that anxiety was significantly predicted by self-enhancement (−0.21, p < 0.01) and self-criticism (0.44, p < 0.01). Moreover, the mediation model supports the mediation of self-enhancement and self-criticism between physical activity and anxiety in university students. The findings suggest that interventions aimed at promoting physical activity and enhancing the self-system should be worthy strategies for reducing students’ anxiety.

scholarly journals Vitamin D increases circulating IGF1 in adults: potential implication for the treatment of GH deficiency

2013 ◽  
Vol 169 (6) ◽  
pp. 767-772 ◽  
Author(s):  
Pietro Ameri ◽  
Andrea Giusti ◽  
Mara Boschetti ◽  
Marta Bovio ◽  
Claudia Teti ◽  
...  
Keyword(s):  
Vitamin D ◽  
Gh Deficiency ◽  
Hormone Replacement ◽  
Positive Association ◽  
Significant Negative Correlation ◽  
Vitamin D Status ◽  
Significant Positive Association ◽  
Potential Implication ◽  
Hydroxyvitamin D ◽  
Before And After

ObjectivesPrevious studies suggested that vitamin D modulates circulating IGF1. We investigated this effect in adults and its clinical relevance in the management of GH deficiency (GHD).Design and methodsIGF1 levels were prospectively measured before and after 12 weeks of treatment with oral vitamin D3(5000 or 7000 IU/week) vs no intervention in 39 subjects 61.9±7.9 years old. The frequency of IGF1 values ≥50th age- and sex-specific percentile in relation to vitamin D status, as determined by the concentration of 25-hydroxyvitamin D (25(OH)D), was retrospectively assessed in 69 GHD patients (57.4±16.6 years) on stable hormone replacement and with 25(OH)D and IGF1 concurrently measured.ResultsTreatment with 5000 and 7000 IU vitamin D3/week significantly raised 25(OH)D by 12.7±8.4 and 13.1±6.5 ng/ml respectively (bothP<0.001 vs baseline). In the 7000 IU group, IGF1 levels also significantly increased by 31.3±36.7 ng/ml (P=0.01). Neither 25(OH)D nor IGF1 significantly varied in controls. IGF1 was ≥50th percentile more frequently in GHD patients with 25(OH)D levels ≥15 than <15 ng/ml (65.9 vs 40.0%,P<0.05). Logistic regression with adjustment for recombinant human GH (rhGH) dose, vitamin D supplements, gender, use of thyroid hormones, corticosteroids or estrogen/testosterone, and season revealed a significant positive association between ≥15 ng/ml 25(OH)D and IGF1 ≥50th percentile (OR 4.4, 95% CI 1.0–18.8,P<0.05). A significant negative correlation between 25(OH)D concentrations and rhGH dose was found after correcting for age and IGF1 (β−0.042,P<0.01), but not after further adjusting for sex, thyroid, adrenal or gonadal replacement, and season (β−0.037,P=0.06).ConclusionsVitamin D increases circulating IGF1 in adults. As a result, a better vitamin D status may ease the achievement of normal IGF1 values in GHD.

scholarly journals Beliefs on Learning and Teaching Language Components: The Case of Iranian EAP and EFL Learners

2017 ◽  
Vol 8 (3) ◽  
pp. 5
Author(s):  
Gholamreza Parsi
Keyword(s):  
Pearson Correlation ◽  
Correlation Coefficients ◽  
Positive Association ◽  
Significant Positive Association ◽  
Efl Learners ◽  
Learning And Teaching ◽  
Teaching Language ◽  
Significant Difference ◽  
The Face ◽  
Basic English

The present study intended to investigate the possible difference between EAP and EFL learners’ beliefs concerning learning and teaching of language components, namely, vocabulary, pronunciation and grammar. Furthermore, this study examined the association between EAP and EFL learners’ beliefs and their language components’ development. To this end, 231 undergraduate EAP (117) and EFL (114) learners at Ferdowsi University took part in the study by completing a five-point Likert scale questionnaire adapted from Simon and Taverniers (2011). The face and content validity of the questionnaire was confirmed by the experts’ judgment and factor analysis. Moreover using Cronbach alpha coefficient the questionnaire was found acceptably reliable (α=0.88). Furthermore, for language components’ development, the EAP learners’ scores in English course and EFL learners’ average scores in their Basic English courses were taken into account. The results of an Independent Samples t-test revealed that there existed a statistically significant difference between EAP and EFL learners’ beliefs on learning and teaching language components. Furthermore, the results of Pearson correlation coefficients indicated a statistically significant positive association between EFL learners’ beliefs and their language components’ development, however no statistically significant correlation was found between EAP learners’ beliefs and their language components’ development. 

scholarly journals Higher Childhood Adversity Reduces Environmental Satisfaction Among Older Adults

2021 ◽  
Vol 5 (Supplement_1) ◽  
pp. 781-781
Author(s):  
Ramona Danielson ◽  
Susan Ray-Degges
Keyword(s):  
Successful Aging ◽  
Correlation Coefficients ◽  
Childhood Adversity ◽  
Positive Association ◽  
Well Being ◽  
Poor Quality ◽  
Neighborhood Quality ◽  
Significant Positive Association ◽  
Increased Risk ◽  
Person Environment Fit

Abstract Background Childhood adversity (CA) is associated with increased physiological and psychological challenges in adulthood. Normal aging comes with changes that may put adults with a history of CA at increased risk of a poor quality aging experience. Because suitable person-environment fit is an important component of well-being, the present study explored two hypotheses: 1) Higher CA is associated with lower perceived neighborhood quality, and 2) Higher CA is associated with higher perceived inequality in home. Methods Using MIDUS 2011-2014 Refresher Survey (for this study, N=1,017 adults ages 55-76), Spearman’s rho correlation coefficients were run to explore the associations between a previously validated CA score and two environmental satisfaction indices. Perceived inequality in home comprised ratings on six items and perceived neighborhood quality comprised ratings on four items. Results Hypothesis 1: There was a significant positive association between the perceived inequality in home and cumulative CA, rs(998) = .200, p &lt; .001. Hypothesis 2: There was a significant negative association between the perceived quality of neighborhood index and cumulative CA, rs(998) = -.182, p &lt; .001. The strength of the associations were weak. Conclusions Higher cumulative experiences of CA were associated with increased feelings of home environment inequality, and decreased feelings of neighborhood quality. Significant differences were evident after decades had elapsed, demonstrating the long-lasting reach of CA. Further research exploring policy and practice approaches to mitigating the effects of CA is needed to allow aging adults to achieve better person-environment fit and equitable access to successful aging.

scholarly journals P0130THE MORPHOMETRIC ANALYSIS OF GLOMERULI IN OBESE AND NON-OBESE PATIENTS WITH GLOMERULAR DISEASES

2020 ◽  
Vol 35 (Supplement_3) ◽  
Author(s):  
Elena Jordanova ◽  
Radmila Jankovic ◽  
Radomir Naumovic ◽  
Dejan Celic ◽  
Bojana Ljubicic ◽  
...  
Keyword(s):  
Iga Nephropathy ◽  
Significant Positive Correlation ◽  
Kidney Biopsy ◽  
Membranous Glomerulonephritis ◽  
Positive Association ◽  
Significant Negative Correlation ◽  
Obese Patients ◽  
Significant Positive Association ◽  
Glomerular Diseases ◽  
Positive Correlation

Abstract Background and Aims The aim of the study was to evaluate glomerular morphometry in obese and non-obese patients with glomerular diseases: FSGS, IgA nephropathy, membranous glomerulonephritis (MGN) and membranoproliferative glomerulonephritis (MPGN). Method The study included 125 patients with glomerular diseases (77 males, mean age 46± 15.2 years): obese (BMI&gt; 27kg/m2- 63 patients) and non-obese (BMI&lt; 27kg/m2-62 patients). The serum concentration of creatinine, proteins, albumin, cholesterol, trygliceride, daily proteinuria were measured at the time of kidney biopsy. Formula Cockcroft-Gault#(Cockcroft-Gault: non-obese) and Cockcroft-GaultLBW: obese) was calculated. Glomerular radius (GR), glomerular volume (GV) and glomerular density (GD) were compared morphometrically between two groups. Results At the time of kidney biopsy the obese had significantly lower eGFR, significantly higher creatinine, trygliceride, daily proteinuria compared to non-obese. Obese FSGS patients had significantly higher GR (109.44±6.03 μm vs 98.53±14.38 μm) and GV (3.13±0.49 x106 μm?vs 2.26±0.83 x106 μm?, only midly lower GD (1.91±0.39/mm2 vs 1.95±0.61/mm2) compared to non-obese. Obese IgA nephropathy patients had higher GR (110.69± 15.24 μm vs 107.77±14.53 μm), significantly higher GV(3.34±1.78 x106 μm?vs 2.31± 1.51 x106 μm? and significantly lower GD (1.21±0.29/mm2 vs 2.14±0.54/mm2) in comparation with non-obese. Significant positive association between GV and BMI (r=0.439; p&lt;0.01) in FSGS patients was found. Significant positive correlation between GV and BMI (r=0.683; p&lt; 0.01), but significant negative correlation between GD and BMI (r=-0.710; p&lt; 0.01) in IgA nephropathy patients were found. Obese MGN patients had lower GR (112.82± 13.65 μm vs 118.39± 14.52 μm), GV (3.57± 1.19 x106 μm?vs 4.07± 1.28 x106 μm? and GD (1.89± 0.17/ mm2 vs 1.91± 0.92/mm2) but without significance compared to non-obese. Obese MPGN patients had higher GR(105.89± 12.24 μm vs 92.73± 30.01 μm), GV (2.94± 0.91 x106 μm?vs 2.31± 1.27 x106 μm? and GD (2.32± 0.63/ mm2 vs 2.03± 0.73/ mm2) but without significance in comparation with non-obese. Significant negative association between GD and daily proteinuria (r=-0.417; p&lt;0.01) in MGN patients was found. Conclusion Obese FSGS patients had significantly higher GV, lower GD compared to non-obese. Obese IgA nephropathy patients had significantly higher GV and significantly lower GD. Obese MGN patients had lower and obese MPGN patients had higher morphometric parameters of glomeruli compared to non-obese. Significant positive correlation between GV and BMI in FSGS and IgA nephropathy patients were found.

scholarly journals CHARACTERIZATION OF BRASSICA SPP. PROGENY LINES FOR YIELD AND ITS RELATED TRAITS

2016 ◽  
Vol 27 (2) ◽  
pp. 1-8
Author(s):  
A. Iqbal ◽  
L. Rahman ◽  
M. H. Kabir
Keyword(s):  
Brassica Napus ◽  
Brassica Juncea ◽  
Rank Correlation ◽  
Correlation Coefficients ◽  
Positive Association ◽  
Correlation Study ◽  
Significant Positive Association ◽  
Plant Seed ◽  
Phenotypic Characters ◽  
Normal Correlation

The present research works were conducted to find out the variation in morphological traits and their relationship in Brassica materials at C7 (Colchiploid) alloplasmic populations and F5 generations with respect to their parents. Among the 19 Brassica progeny lines representing the cross products (Brassica napojuncea) of C7 generation of Brassica napus and Brassica juncea (BINA sharisha 5 x Daulot: colchiploid-C7) and F5 generations with their parents, inter-species EG2 (Brassica napus x Brassica juncea) and EG1 (Brassica napus x Brassica juncea) showed better agronomic performance. Phenotypic characters of the genotypes were closely associated with each other for both normal correlation coefficients and Spearman’s rank correlation coefficients. The total relative ranking ranged from 1 to 20 and the first rank was estimated for the genotype EG2 genotypes. The last rank was estimated for the genotype ED1 (Brassica napus x Brassica napus). Out of 55 associations, which found in the correlation study, 10 associations were found highly significant at the morphological level. Flower set per plant (self) showed highly significant positive association with total number of siliqua per plant (self) (r = 0.934**) but the significant negative association of the total number of siliqua per plant (self) with siliqua length was very strong (-0.489*). There was a genetic basis of association in most of the cases of pairs of relations. The Spearman’s rank correlation test was studied to compare the morphological characterization for distinguishing genotypes. In this present study, this test presented 12 relationships that showed 10 positive significant and two negative significant correlations. In normal correlation coefficients 10 significant associations were found but 12 associations in Spearman’s rank correlation. In these techniques, number of flower set per plant (self) had highly significant positive correlation with total number of siliqua per plant (rs = 0.817**). The days to 50 % flowering and number of seed per siliqua (self) had significant negative correlation with number of seed per siliqua (open) (rs = -0.546**) and number of flowers set per plant (open) (rs = -0.563*), respectively. Finally, the study suggested that some yield related traits such as flower set per plant, number of siliqua per plant, seed per siliqua and days to 50% flowering can be selected and used in breeding program for future increasing the grain yield of rapeseed.

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