Mapping of QTL for Seed Size and Shape Traits in Common Bean

Our objective was to identify quantitative trait loci (QTL) for seed weight, length, and height segregating in a recombinant inbred line population derived from the common bean (Phaseolus vulgaris L.) cross `PC-50' × XAN-159. The parents and progeny were grown in two separate greenhouse experiments in Nebraska, and in field plots in the Dominican Republic and Wisconsin. Data analysis was done for individual environments separately and on the mean over all environments. A simple linear regression analysis of all data indicated that most QTL appeared to be detected in the mean environment. Based on these results, composite interval mapping (CIM) analysis was applied to the means over environments. For seed weight, strong evidence was indicated for five QTL on common bean linkage groups (LGs) 3, 4, 6, 7, and 8. Multiple regression analysis (MRA) indicated that these QTL explained 44% of the phenotypic variation for the trait. Weaker evidence was found for three additional candidate QTL on bean LGs 4, 5, and 8. All eight markers associated with these QTL were significant in a MRA where the full model explained 63% of the variation among seed weight means. For seed length, CIM results indicated strong evidence for three QTL on LG 8 and one on LG 2. Three additional putative QTL were detected on LGs 3, 4, and 11. The markers associated with the three seed length QTL on LG 8, and the QTL on LGs 2 and 11 were significant in a MRA with the full model explaining 48% of the variation among seed length means. For seed height, three QTL on LGs 4, 6, and 11 explained 36% of the phenotypic variation for trait means. Four of the seven QTL for seed length and two of three QTL for seed height also appeared to correspond to QTL for seed weight. Four QTL for common bacterial blight resistance [Xanthomonas campestris pv. phaseoli (Smith Dye)] and for smaller seed size were associated on LGs 6, 7, and 8. The implications of these findings for breeders is discussed.

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554 Mapping of QTL for Seed Size and Shape Traits in Common Bean

HortScience ◽

10.21273/hortsci.35.3.491c ◽

2000 ◽

Vol 35 (3) ◽

pp. 491C-491

Author(s):

Soon O. Park ◽

Dermot P. Coyne ◽

Geunhwa Jung ◽

Paul W. Skroch ◽

E. Arnaud-Santana ◽

...

Keyword(s):

Regression Analysis ◽

Common Bean ◽

Linear Regression Analysis ◽

Interval Mapping ◽

Full Model ◽

Simple Linear Regression ◽

Linkage Groups ◽

Seed Length ◽

The Mean ◽

Field Plots

Our objective was to identify QTL for seed weight (SW), length, and height segregating in a recombinant inbred line (RIL) population from the cross `PC-50' (Larger SW) × XAN-159 (Smaller SW). The parents and RILs were grown in two separate greenhouse experiments in Nebraska, and in field plots in the Dominican Republic and Wisconsin. Data analysis was done for individual environments separately and on the mean over all environments. A simple linear regression analysis of all data indicated that most QTL appeared to be detected in the mean environment. Composite interval mapping (CIM) analysis was then applied to the means over environments. Eight QTL for SW were detected on common bean linkage groups (LGs) 3, 4, 5, 6, 7, and 8. All eight markers associated with these QTL were significant in a multiple regression analysis (MRA), where the full model explained 63% of the variation among SW means. Six QTL for seed length were detected on LGs 2, 3, 4, 8, and 11 using CIM. The markers associated with the three seed length QTL on LGs 2, 8, and 11 were significant in a MRA with the full model explaining 48% of the variation among seed length means. Three QTL for seed height on LGs 4, 6, and 11 explained 36% of the phenotypic variation for trait means. Four of the six QTL for seed length and two of three QTL for seed height also appeared to correspond to QTL for SW.

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Detection and Mapping of RAPD Markers Associated with QTL Affecting Seed Size and Shape in Common Bean

HortScience ◽

10.21273/hortsci.33.3.547b ◽

1998 ◽

Vol 33 (3) ◽

pp. 547b-547

Author(s):

Soon O. Park ◽

Dermot P. Coyne ◽

Geunhwa Jung ◽

E. Arnaud-Santana ◽

H. Ariyarathne

Keyword(s):

Linkage Group ◽

Common Bean ◽

Seed Size ◽

Phenotypic Variation ◽

Seed Weight ◽

Rapd Markers ◽

Rapd Marker ◽

Seed Shape ◽

Seed Length ◽

Ri Lines

Seed size is an important trait in common bean. The objective was to identify RAPD markers associated with QTL for seed weight, seed length, and seed height in a molecular marker-based linkage map in a recombinant inbred (RI) population from the common bean cross of the larger seeded (100 seed/39 to 47 g) PC-50 (ovate seed shape) × smaller seeded (100 seed/26 to 35 g) XAN-159 (flat rhomboidal seed shape). The parents and RI lines were grown in two separate greenhouse and two field (Wisconsin, Dominican Republic) experiments using a RCBD. Continuous distributions for seed weight, seed length, and seed height were observed for RI lines indicating quantitative inheritance. One to three QTLs affecting seed weight explained 17% to 41% of the phenotypic variation. Two to three QTLs for seed length explained 23% to 45% of the phenotypic variation. One to four QTL associated with seed height explained 17% to 39% of the phenotypic variation. A RAPD marker M5.850 in linkage group 3 was consistently associated with seed weight, seed length, and seed height in all experiments and explained 7% to 13% of the phenotypic variation for these traits. A seedcoat pattern morphological marker (C) in linkage group 1 was associated with seed weight and seed height in two greenhouse experiments.

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Diversity of common bean in Jammu and Kashmir, India: a DIVAgeographic information system and cluster analysis

Journal of Applied and Natural Science ◽

10.31018/jans.v6i1.406 ◽

2014 ◽

Vol 6 (1) ◽

pp. 226-233 ◽

Cited By ~ 2

Author(s):

Sheikh Mohammad Sultan ◽

Sher Ahmad Dar ◽

Suheel Ahmad Dand ◽

Natarajan Sivaraj

Keyword(s):

Common Bean ◽

Seed Size ◽

Seed Weight ◽

Genetic Relationships ◽

Farming Systems ◽

Seed Color ◽

Seed Length ◽

Jammu And Kashmir ◽

And Cluster Analysis ◽

100 Seed Weight

A total of 80 diverse germplasm accessions of common bean (Phaseolus vulgaris L.) were collected from 31 different locations known for marginal and risk prone farming systems in remote and hilly areas of North-Western Indian Himalayan state of Jammu and Kashmir. The variability was observed in seed color, shape, size and 100- seed weight. Thirteen colors of bean seeds were represented in these 80 accessions with high predominance of red colored seeds. Cuboid, kidney and oval seed shapes observed were represented respectively in 61.25%, 25% and 13.75% of the accessions. There were significant variations in seed length, width and 100-seed weight being highly significant in the later case. All the three seed size classes (small, medium and large according to CIAT categorization) were represented in the collected accessions. 22.5% accessions have 100-seed weight less than 25g, 53.75% accessions have 100-seed weight between 25-40g while 100-seed weight of more than 40g was recorded in 23.75% of the accessions. Highly positive correlations were found between 100-seed weight and seed length and width and between seed length and seed width. The 80 accessions were grouped in three clusters at a coefficient level of 0.3 with largest cluster of 59 accessions followed by a medium cluster with 20 accessions and the least with a single accession. Grid maps generated through DIVA-GIS software indicated that diverse accessions of common bean in terms of seed size and weight can be sourced from the areas falling in Budgam, Shopian and Kulgam districts of the state. Conservation of this remarkable genetic diversity is recommended for future propagation, breeding and the investigation of the genetic relationships.

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The impact of legs fat mass and legs lean fat mass on thigh circumference according cardiovascular risk: a population-based study

European Journal of Preventive Cardiology ◽

10.1093/eurjpc/zwab061.252 ◽

2021 ◽

Vol 28 (Supplement_1) ◽

Author(s):

M Chlabicz ◽

M Paniczko ◽

J Jamolkowski ◽

P Sowa ◽

M Lapinska ◽

...

Keyword(s):

Adipose Tissue ◽

Regression Analysis ◽

Linear Regression ◽

Muscle Tissue ◽

Fat Mass ◽

Linear Regression Analysis ◽

Population Based ◽

Thigh Circumference ◽

Tissue Model ◽

The Mean

Abstract Funding Acknowledgements Type of funding sources: Public Institution(s). Main funding source(s): Medical University of Bialystok, Poland Introduction A low thigh circumference is associated with an increased risk of high blood pressure, diabetes, cardiovascular diseases, and total mortality. Objectives The aim of the study was to investigate the relationship between the thigh circumference and cardiovascular (CV) risk classes, and to assess what type of tissue, adipose tissue or muscle tissue affects the thigh circumference. Methods The longitudinal, population-based, Polish study was conducted in 2017-2020. A total of 931 individuals aged 20-79 were analyzed. Pol-SCORE system was used to assess the 10-year risk of fatal CV based on the following risk factors: age, gender, smoking, systolic blood pressure, and total cholesterol for individuals aged 40-70. Then, CV risk classes were assessed using the 2019 ESC/EAS guidelines. The measurement of thigh circumference were performed directly below the gluteal fold of the thigh. Both thighs were measured and the mean value was calculated as the final thigh circumference. Body composition was assessed using Dual Energy X-ray Absorptiometry (DEXA). Results The mean age was 49.1 ± 15.5 years and 43.2% male. The mean thigh circumference was 58.2 ± 5.9 cm, the mean legs fat mass was 7.7 ± 2.8kg, and the mean legs lean mass was 16.9 ± 4.0kg. Lower thigh circumference was associated with higher CV risk classes in univariate linear regression analysis (β -0.516, p = 0.002), as well adjusted by age and sex (β -0.839, p = 0.008), adjusted by age, sex, BMI (β -0.886, p <0.001), and age, sex, WHR (β -0.988, p <0.001). In linear regression analysis legs adipose tissue and muscle tissue were related to the thigh circumference independently of CV risk classes (Model 1) and Pol-SCORE value (Model 2). However, fatty tissue (Model 1: β 0.746, p < 0.001; Model 2: β 0.749, p < 0.001) affects the thigh circumference more than the muscle tissue (Model 1: β 0.479, p < 0.001; Model 2: β 0.442, p < 0.001) (Fig. 1). Conclusion Smaller thigh circumference was associated with higher CV risk classes. Thigh circumference was more influenced by adipose tissue than by muscle tissue, regardless of the Pol-SCORE or CV risk classes. Table 1. Variable Model 1 Model 2 Beta p R2 Beta p R2 Legs fat mass 0.746 <0.001 0.785 0.749 <0.001 0.760 Legs lean mass 0.479 <0.001 0.785 0.442 <0.001 0.760 Model 1: adjusted for Cardiovascular risk classesModel 2: adjusted for Pol-SCOREResults of the linear regression analysis thigh circumference in the general population Abstract Figure 1.

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Reduced oxygenation but not fibrosis defined by functional magnetic resonance imaging predicts the long-term progression of chronic kidney disease

Nephrology Dialysis Transplantation ◽

10.1093/ndt/gfy324 ◽

2018 ◽

Vol 35 (6) ◽

pp. 964-970 ◽

Cited By ~ 11

Author(s):

Kei Sugiyama ◽

Tsutomu Inoue ◽

Eito Kozawa ◽

Masahiro Ishikawa ◽

Akira Shimada ◽

...

Keyword(s):

Magnetic Resonance Imaging ◽

Chronic Kidney Disease ◽

Regression Analysis ◽

Linear Regression Analysis ◽

Resonance Imaging ◽

Bold Mri ◽

Adc Values ◽

The Mean ◽

Rate Of Decline ◽

Observation Period

Abstract Background Although chronic hypoxia and fibrosis may be a key to the progression of chronic kidney disease (CKD), a noninvasive means of measuring these variables is not yet available. Here, using blood oxygen level–dependent (BOLD) and diffusion-weighted (DW) magnetic resonance imaging (MRI), we assessed changes in renal tissue oxygenation and fibrosis, respectively, and evaluated their correlation with prognosis for renal function. Methods The study was conducted under a single-center, longitudinal, retrospective observational design. We examined the prognostic significance of T2* values of BOLD-MRI and apparent diffusion coefficient (ADC) values on DW-MRI and other clinical parameters. The rate of decline in estimated glomerular filtration rate (eGFR) was calculated by linear regression analysis using changes in eGFR during the observation period. Results A total of 91 patients were enrolled, with a mean age of 55.8 ± 15.6 years. Among patients, 51 (56.0%) were males and 38 (41.8%) had diabetes mellitus. The mean eGFR was 49.2 ± 28.9 mL/min/1.73 m2 and the mean observation period was 5.13 years. ADC values of DW-MRI but not T2* values of BOLD-MRI were well correlated with eGFR at the initial time point. The mean annual rate of decline in eGFR during the 5-year observation period was −1.92 ± 3.00 mL/min/1.73 m2. On multiple linear regression analysis, the rate of decline in eGFR was significantly correlated with eGFR at the start point, period average amount of proteinuria and T2* values, but not with ADC values (t = 2.980, P = 0.004). Conclusions Reduced oxygenation as determined by low T2* values on BOLD-MRI is a clinically useful marker of CKD progression.

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Therapeutic Strategy of Percutaneous Transforaminal Endoscopic Decompression for Stenosis Associated With Adult Degenerative Scoliosis

Global Spine Journal ◽

10.1177/2192568220959036 ◽

2020 ◽

pp. 219256822095903

Author(s):

Lin-Yu Jin ◽

Kun Wang ◽

Zhen-Dong Lv ◽

Xin-Jin Su ◽

Hai-Ying Liu ◽

...

Keyword(s):

Regression Analysis ◽

Cobb Angle ◽

Linear Regression Analysis ◽

Multiple Linear Regression Analysis ◽

Lumbar Stenosis ◽

Degenerative Scoliosis ◽

Adult Degenerative Scoliosis ◽

Lateral Subluxation ◽

The Mean ◽

Transforaminal Endoscopic Surgery

Study Design: A retrospective study. Objective: To investigate the effects of percutaneous transforaminal endoscopic decompression (PTED) for lumbar stenosis associated with adult degenerative scoliosis and to analyze the correlation between preoperative radiological parameters and postoperative surgical outcomes. Methods: Two years of retrospective data was collected from 46 patients with lumbar stenosis associated with adult degenerative scoliosis who underwent PTED. The visual analog scale (VAS), Oswestry Disability Index, and modified MacNab criteria were used to evaluate the clinical outcomes. Multiple linear regression analysis was used to analyze the correlation between radiological parameters and surgical outcomes. Results: The mean age of the 33 female and 13 male patients was 73.5 ± 8.1 years. The mean follow-up was 27.6 ± 3.5 months (range from 24 to 36). The average coronal Cobb angle was 24.5 ± 8.2°. There were better outcomes of the VAS for leg pain and Oswestry Disability Index after surgery. Based on the MacNab criteria, excellent or good outcomes were noted in 84.78% of patients. Multiple linear regression analysis showed that Cobb angle and lateral olisthy may be the predictors for low back pain. Conclusion: Transforaminal endoscopic surgery may be an effective and safe method for geriatric patients with lumbar stenosis associated with degenerative scoliosis. The predictive factors of clinical outcomes were severe Cobb angle and high degree lateral subluxation. Transforaminal endoscopic surgery may not be recommended for patients with Cobb angle larger than 30° combined with lateral subluxation.

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Phenotypic Characterization of 183 Turkish Common Bean Accessions for Agronomic, Trading, and Consumer-Preferred Plant Characteristics for Breeding Purposes

Agronomy ◽

10.3390/agronomy10020272 ◽

2020 ◽

Vol 10 (2) ◽

pp. 272 ◽

Cited By ~ 5

Author(s):

Muhammad Azhar Nadeem ◽

Tolga Karaköy ◽

Mehmet Zahit Yeken ◽

Ephrem Habyarimana ◽

Ruştu Hatipoğlu ◽

...

Keyword(s):

Common Bean ◽

Plant Height ◽

Seed Yield ◽

Environmental Conditions ◽

Seed Weight ◽

Seed Length ◽

Plant Weight ◽

Wide Range ◽

Days To Maturity ◽

100 Seed Weight

Plant landraces represent a repository of a gene pool, local adaptation of their domestic species, and thereby are considered a great source of genetic variations. Such genetic variation can be helpful to mitigate the current and future food challenges. A total of 183 common bean accessions including three commercial varieties collected from 19 Turkish provinces were grown to record their morpho-agronomic variations and to evaluate the best performing accessions under multi-environmental conditions. Plant height, days to maturity, pods weight, seed length, and 100-seed weight were used to evaluate the best performing accessions under different environmental conditions. A wide range of variations for traits like days to maturity (99–161), plant height (21–168.7 cm), seed length (7.41–16.4 mm), seeds per plant (17.8–254.4), and 100-seeds weight (24.97–73.8 g) were observed and can be useful for breeding purposes. The analytic results derived from the first three eigenvectors suggested that plant height, plant weight, 100-seed weight, and days to flowering were biologically significant bean traits. Seed yield per plant was positively and significantly correlated with plant weight and pods weight. Genotype × environment biplot discriminated the studied common bean accessions based on their plant height and growth habit. Plant height, days to maturity, seed width, and first pod height were found highly heritable traits and were least affected by environmental forces. Among 19 provinces, accessions of Bilecik showed maximum pods per plant, seed yield per plant and 100-seed weight, while Erzincan and Sivas provinces reflected the prevalence of bushy and early maturing accessions. Information provided herein comprehensively explored the occurrence of genotypic variations which can be used for the development of candidate varieties responding to breeder, farmer, and consumer preferences.

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Chemical prediction of water activity in processed cheese

Journal of Dairy Research ◽

10.1017/s0022029900029198 ◽

1989 ◽

Vol 56 (4) ◽

pp. 665-668 ◽

Cited By ~ 10

Author(s):

María A. Esteban ◽

Andrés Marcos

Keyword(s):

Regression Analysis ◽

Linear Regression ◽

Water Activity ◽

Negative Correlation ◽

Linear Regression Analysis ◽

Significant Negative Correlation ◽

Regression Equation ◽

Low Fat ◽

Two Samples ◽

The Mean

SummaryBy linear regression analysis, a highly significant negative correlation (r = −0·96) was found between the mean ash concentration values (g/100 g moisture) and water activity (aw) of six types of processed cheeses (low-fat, semi-fat, fat, extra-fat, double fat and special). The regression equation aw = 0·9951 − 0·0032* (ash), applied to 40 cheese samples, yielded aw values which differed by < 0·005 aw units from those measured experimentally in 75% of the samples. The maximum differences between the calculated and experimental aw values (found in only two samples) were ±0·01 aw units.

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Oral Fluoride Measurements for Estimation of the Anti-caries Efficacy of Fluoride Treatments

Journal of Dental Research ◽

10.1177/002203459207100s09 ◽

1992 ◽

Vol 71 (3_suppl) ◽

pp. 836-840 ◽

Cited By ~ 29

Author(s):

R.M. Duckworth ◽

S.N. Morgan ◽

R.J. Gilbert

Keyword(s):

Clinical Trial ◽

Regression Analysis ◽

Linear Regression Analysis ◽

Second Phase ◽

Response Behavior ◽

Similar Dose ◽

Recent Clinical Trial ◽

The Mean ◽

Zero Time

The aims of this work were (a) to assess the oral bioavailability of fluoride delivered from dentifrices and (b) to test for a possible link between the results and clinical data obtained with the same dentifrices. Oral fluoride concentrations were measured in samples of saliva and plaque taken from seven subjects, after use of dentifrices which contained 0, 1000, 1500, and 2500 μg F/g as sodium monofluorophosphate. Salivary fluoride in samples obtained within the first few hours after a single dentifrice application, or up to 20 h after four weeks' daily use, increased with increasing F content of the dentifrice. For example, the mean zero-time intercepts of the second phase of salivary fluoride clearance curves for the above dentifrices were 0.46, 1.48, 1.88, and 3.03 μmol F/L, respectively. Plaque fluoride measured after four weeks' daily use of the dentifrices exhibited similar dose-response behavior. Linear regression analysis showed these trends to be statistically significant for both saliva (p < 0.001) and plaque (p < 0.025). Mean saliva and plaque fluoride concentrations were inversely associated with mean three-year caries increments for the three fluoride-containing dentifrices obtained in a recent clinical trial: DMFS scores 6.80, 6.33, and 5.71, respectively (Stephen et al., 1988). This suggests that oral fluoride measurements are a valuable in vivo method for the evaluation of the potential anti-caries efficacy of fluoride-containing dental products.

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Changes of the Macular Ganglion Cell-Inner Plexiform Layer Thickness after Cataract Surgery in Glaucoma Patients

Journal of Ophthalmology ◽

10.1155/2016/9785939 ◽

2016 ◽

Vol 2016 ◽

pp. 1-8 ◽

Cited By ~ 2

Author(s):

Hyun Cheol Roh ◽

Choul Yong Park ◽

Martha Kim

Keyword(s):

Regression Analysis ◽

Cataract Surgery ◽

Ganglion Cell ◽

Multivariate Regression ◽

Linear Regression Analysis ◽

Plexiform Layer ◽

Multivariate Regression Analysis ◽

Inner Plexiform Layer ◽

Postoperative Changes ◽

The Mean

Purpose. To investigate the effect of uneventful cataract surgery on macular ganglion cell-inner plexiform layer (mGC-IPL) thickness in glaucoma patients.Methods. This retrospective study included 65 eyes of 65 subjects who underwent uneventful cataract surgery, including 13 glaucoma eyes and 52 normal eyes. Using spectral domain optical coherence tomography, the mGC-IPL thickness was measured and compared between glaucoma and normal eyes preoperatively as well as 1 month and 3 months postoperatively. Linear regression analysis was used to determine the factors associated with postoperative change in mGC-IPL thickness.Results. The mean mGC-IPL significantly increased in both groups 1 month and 3 months after surgery (allPvalues equal to or less than 0.001). The postoperative changes between groups were not significantly different (P=0.171). In the multivariate regression analysis, preoperative mGC-IPL thickness showed a significant association with the change of average mGC-IPL thickness 1 month and 3 months after surgery (allPvalues < 0.001).Conclusions. The mean mGC-IPL thickness was increased after cataract surgery, and the postoperative mGC-IPL thickness changes were associated with preoperative mGC-IPL thickness in both groups and axial length in normal eye. The effects of cataract surgery on mean mGC-IPL thickness were not different in glaucomatous and normal eyes.

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