This Land Is (Not) Your Land: Race and Ascripted Americanness in the Formation of Attitudes about Immigrants

2020 ◽  
pp. 1-20
Author(s):  
Raul S. Casarez
Keyword(s):  
Land Race

Inequality in the Promised Land

2020 ◽  
Vol 9 (1) ◽  
pp. 177-180
Author(s):  
Muhammad Sharif Uddin
Keyword(s):  
United States ◽  
Minority Students ◽  
Doctoral Dissertation ◽  
Ethnographic Study ◽  
Suburban Area ◽  
Midwestern United States ◽  
Minority Community ◽  
Promised Land ◽  
Land Race ◽  
The Relationship

Inequality in the promised land: Race, resources, and suburban schooling is a well-written book by L’ Heureux Lewis-McCoy. The book is based on Lewis-McCoy’s doctoral dissertation, that included an ethnographic study in a suburban area named Rolling Acres in the Midwestern United States. Lewis-McCoy studied the relationship between families and those families’ relationships with schools. Through this study, the author explored how invisible inequality and racism in an affluent suburban area became the barrier for racial and economically minority students to grow up academically. Lewis-McCoy also discovered the hope of the minority community for raising their children for a better future.

Earliness of an indeterminate crop, Vigna unguiculata (L.) Walp., as affected by drought, temperature, and plant density

1982 ◽  
Vol 33 (3) ◽  
pp. 531 ◽  
Author(s):  
DA Grantz ◽  
AE Hall
Keyword(s):  
Vigna Unguiculata ◽  
Dry Matter ◽  
Plant Density ◽  
Severe Drought ◽  
Base Temperature ◽  
Semiarid Environments ◽  
Land Race ◽  
Sowing Dates ◽  
Moderate Drought ◽  
Extreme Variability

Earliness of an indeterminate crop, Vigna unguiculata (L.) Walp., was studied to aid development of selection techniques for improving adaptation to semiarid environments. Earliness was based upon the time of first appearance of floral buds and flowers, proportion of shoot dry matter in reproductive parts at midseason, and time of maturity. A cowpea land race, Chino 3, was earlier than cultivars California Blackeye No. 3 and No. 5, with respect to all of these criteria. Time to flowering from different sowing dates was related to heat units, which were calculated from daily mean air temperature above a base temperature of c. 10�C. The proportions of shoot dry matter in reproductive parts during early stages of pod-filling were greater with moderate drought but were unaffected by severe drought, compared with the response of adequately irrigated plants. Widely spaced plants exhibited greater proportions of shoot dry matter in reproductive parts at midseason than did closely spaced plants. Adaptation of cowpeas to semiarid environments may be improved by selecting for early partitioning of carbohydrates to reproductive parts. Selection for early partitioning may be more effective in adequately watered conditions, owing to extreme variability under drought, and at wide and precise spacing.

scholarly journals Evolution of Physiologic Races and Virulence of Puccinia striiformis on Wheat in Syria and Lebanon

Plant Disease ◽  
2002 ◽  
Vol 86 (5) ◽  
pp. 499-504 ◽  
Author(s):  
A. H. Yahyaoui ◽  
M. S. Hakim ◽  
M. El Naimi ◽  
N. Rbeiz
Keyword(s):  
Resistance Genes ◽  
Puccinia Striiformis ◽  
Yellow Rust ◽  
Wheat Breeding ◽  
Natural Conditions ◽  
Breeding Programs ◽  
Land Race ◽  
Physiologic Races ◽  
Resistant Genotypes

Virulence-avirulence phenotypes of Puccinia striiformis isolates collected in Lebanon and Syria were determined on seedlings of the wheat-yellow rust differential genotypes. We found 25 and 11 physiologic races over 6 years (1994 to 1999) in Syria and Lebanon, respectively. The composition of physiologic races found in Syria and Lebanon differed greatly between 1994 and 1999. Races identified in 1999, such as 230E150 and 230E134, have wider spectra of virulence on resistant genotypes than races collected in 1994. In Lebanon, three races were found in 1994 compared with six races in 1999. Yellow rust differential genotypes were used in a trap nursery to monitor yellow rust populations under natural conditions. Races identified from cultivars in the trap nursery in Syria and Lebanon, and from land race cultivars in Iraq, were recovered among the races identified from farm fields. Yellow rust samples were collected from Yemen, and none of the races identified from Yemen samples were identical to those in Syria and Lebanon. Virulence frequencies in the yellow rust population on the differential genotypes tested in the trap nurseries were above 70% for some resistance genes. Yellow rust populations in Syria and Lebanon have diverse virulence phenotypes. P. striiformis populations appear to be changing over, and this would be an important consideration for wheat breeding programs in the region.

scholarly journals Unravelling genetic variability for moisture stress tolerance in Indian mustard and identification of high breeding value donor lines

2021 ◽  
Vol 42 (6) ◽  
pp. 1478-1487
Author(s):  
S.K. Sandhu ◽  
◽  
MS. Sunayana ◽  
L. Pal ◽  
I. Rialch ◽  
...  
Keyword(s):  
Stress Tolerance ◽  
Brassica Juncea ◽  
Indian Mustard ◽  
Moisture Stress ◽  
Introgression Lines ◽  
Breeding Value ◽  
Drought Susceptibility Index ◽  
Land Race ◽  
Rainfed Conditions ◽  
Best Linear Unbiased

Aim: Identification of high breeding value donor lines harbouring tolerance to moisture stress from diversity stock of 443 genotypes of Brassica juncea. Methodology: Germplasm stock of 443 Indian mustard (Brassica juncea L.) genotypes, comprising introgression lines, land races, old cultivars and advance breeding lines, were evaluated under two environments viz., irrigated and rainfed conditions to check the variability for yield and related traits. Statistical software META-Rver 6.0 (Multi Environment Trial Analysis using R) was used for computation of Best Linear Unbiased Predictions, Analysis of Variance (ANOVA), Genetic Correlations and Heritability. Drought susceptibility index and per cent seed yield reduction under rainfed conditions were used as indicators to determine moisture stress tolerance in genotypes. Results: The variability for moisture stress tolerance has been unravelled in a diverse genetic stock of Brassica juncea under two environments: irrigated and rainfed. For high prediction accuracy, the ranking of genotypes was done based on Best Linear Unbiased Predictions for seed yield and its component traits. PBR-378, RGN-329, RB-73, RB-50 and PBR-422 and Giriraj were identified as moisture stress tolerant genotypes. One land race Sahib 36 and three introgression lines viz., MCP 12-211, PTJ-3-69 and MSC-3 have also been identified as potential genetic resources for moisture stress tolerance. Principal component analysis based on biplots depicted specific distribution of variables for each environment. Interpretation: This study led to the identification of potential donors for moisture stress tolerance with high predictive accuracy. Low drought susceptibility index and high breeding value in a land race and three introgression lines derived from Erucastrum cardaminoides, B. tournefortii and B. carinata emphasized their utilization as potential genetic resources to breed for moisture stress tolerance in B. juncea.

Biocompatibility of Silver-Coated Peritoneal Dialysis Catheter in a Porcine Model

1996 ◽  
Vol 16 (4) ◽  
pp. 398-405 ◽  
Author(s):  
Leo C. T. Fung ◽  
Antoine E. Khoury ◽  
Stephan I. Vas ◽  
Charles Smith ◽  
Dimitrios G. Oreopoulos ◽  
...  
Keyword(s):  
Peritoneal Dialysis ◽  
Porcine Model ◽  
Bacterial Colonization ◽  
Subcutaneous Fat ◽  
Giant Cells ◽  
Silicone Implants ◽  
Silver Coating ◽  
Peritoneal Dialysis Catheter ◽  
Dialysis Catheter ◽  
Land Race

Objective Previous studies have shown that silver formulations coated onto implantable materials retard bacterial colonization and reduce the incidence of catheter-related infections. The objective of this study was to assess the histologic effects of sputter-coated silverl silicone implants on host tissue. Design Sputter silver-coated silicone peritoneal dialysis catheter segments with and without Dacron cuffs were implanted in the subcutaneous fat and muscle in 4 pigs. Noncoated implants served as controls. The specimens were retrieved at 1,2,3,4,7,8,9,10,12, and 27 weeks. Experimental Animals Four 6-week-old male Yorkshire Land race pigs (5–6 kg) were used. Main Outcome Measures Histologic parameters evaluated included the degree of inflammation, the number of giant cells, the extent of silver particulate inclusions, and the thickness of the capsules. All specimens were evaluated by a single blinded pathologist. Microbiologic analyses were also performed. Results The silver-coated catheters were associated with less inflammation than were the noncoated catheters, both infatand muscle (p=0.04). The number of giant cells was also lower around the silver-coated than the noncoated catheters, which were implanted in subcutaneous fat (p < 0.05). Particulate inclusions compatible with silver or silver oxide were observed only in tissue around silvercoated implants (p < 0.0001). The thickness of the capsules and the extent of the inflammatory zones were not significantly different. There was no evidence of infection-related changes. Conclusions These data suggest that the sputter silver coating does not act as a significant tissue irritant.

Estimation of genetic variance and allied parameters through biparental mating in opium poppy (Papaver somniferum L.)

1987 ◽  
Vol 38 (6) ◽  
pp. 1047 ◽  
Author(s):  
RK Srivastava ◽  
JR Sharma
Keyword(s):  
Opium Poppy ◽  
Hybrid Breeding ◽  
Additive Variance ◽  
F1 Hybrid ◽  
Partial Dominance ◽  
Land Race ◽  
F2 Population ◽  
Biparental Mating ◽  
Morphine Content ◽  
Latex Yield

Genetic variances and allied genetic parameters were estimated for eight economic traits through biparental mating designs in two populations: (i) a local land race, and (ii) a segregating F2 population of Indian opium poppy. Estimates of additive variance were larger than the dominance variances (o2A > o2D) or environmental variance (+-R > n�2) for the majority of the eight traits examined. Narrow sense heritability (h2NS) estimates were high (60-89%) for five traits, moderate (28.3%) for peduncle length and low (< 13%) for capsule index and morphine content in the local land race, and high (57-93%) for all the eight characters in the F2 population. Average degree of dominance in the local population leaned heavily towards overdominance (G > 1 .O) for six charcters (four in negative and two in positive directions) and towards partial dominance (G < 1.0) for the remaining two traits: latex yield and flowering time (both in negative direction). Accordingly, combination breeding for latex yield and flowering duration, (F1) hybrid breeding for seed yield, morphine content and capsule number and/or population breeding for other traits, were suggested for rapid genetic improvement of opium poppy.

Geographic variation in seedling morphology of Chukrasia species

2002 ◽  
Vol 50 (3) ◽  
pp. 319 ◽  
Author(s):  
A. Kalinganire ◽  
K. Pinyopusarerk ◽  
E. R. Williams
Keyword(s):  
Geographic Variation ◽  
Multivariate Analyses ◽  
Allozyme Variation ◽  
Seedling Morphology ◽  
The Third ◽  
Land Race ◽  
Resultant Data ◽  
Polymorphic Species ◽  
Temperature Controlled ◽  
Bark Structure

Seed collected from 23 native provenances of Chukrasia A.Juss. and one Australian land race was used to study geographic variation in seedling morphology under temperature-controlled glasshouse conditions. Twenty-four variates were measured for each seedling and the resultant data subjected to univariate and multivariate analyses. The multivariate analyses effectively separated the Chukrasia genus into three different groups or eco-geographical clusters. The most important characteristics that separated the groups were bark structure, leaf type and midrib colour. The first group, provenances from China, Laos, Malaysia, Vietnam and the Australian land race, is characterised by smooth bark, pinnate or intermediate leaves and reddish-green to greenish-red midrib. The second group, provenances from Myanmar and Thailand, is characterised by rough bark, mainly bipinnate leaves and green midrib. The third group, provenances from Sri Lanka, is characterised by rough bark, bipinnate leaves and red midrib. The study clearly shows Chukrasia to be a polymorphic species comprising at least three ecotypes or possibly three ecospecies. A study of allozyme variation may better reveal the systematics within the genus.

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