Chromosomal Aberration in Natural Populations of Isoetes coromandelina L. (f.)

2019 ◽  
Vol 3 (1) ◽  
Author(s):  
Santosh Kumar Shukla ◽  
Vivek Singh
Keyword(s):  
Chromosomal Aberration ◽  
Research Work ◽  
Natural Populations ◽  
Assay System ◽  
Biological Assay ◽  
Agricultural Chemicals ◽  
Crop Field

Isoetes L. is a cosmopolitan genus of heterosporous lycopods which is worldwide in distribution. During the present research work, natural and crop field populations of Isoetes from Bilaigarh were compared for their. This has been done in order to study the effect of agricultural chemicals on the chromosomes of Isoetes taking the root mitosis as the biological assay system. No such study has been done in case of Isoetes as far as the available literature is concerned.

Establishment of a biological assay system for human retroviral protease activity

2005 ◽  
Vol 7 (5-6) ◽  
pp. 820-824 ◽  
Author(s):  
Akiko Yoshida ◽  
Ahmad Piroozmand ◽  
Akiko Sakurai ◽  
Mikako Fujita ◽  
Tsuneo Uchiyama ◽  
...  
Keyword(s):  
Protease Activity ◽  
Assay System ◽  
Biological Assay ◽  
Retroviral Protease

Development of a non-hazardous biological assay system for the screening of anti-HIV compounds

1995 ◽  
Vol 26 (3) ◽  
pp. A252 ◽  
Author(s):  
R. Kiser ◽  
S.T. Makovsky ◽  
J.P. Bader ◽  
H.K. Lyerly ◽  
B.R. Cullen ◽  
...  
Keyword(s):  
Assay System ◽  
Biological Assay ◽  
Anti Hiv

scholarly journals Studying of genetic polymorphism of olive varieties of Azerbaijan and Turkey

2020 ◽  
Vol 3 ◽  
pp. 91-95
Author(s):  
A. Mammadov ◽  
◽  
A. Ipek ◽  
S. H. Teoman-Duran ◽  
S. A. Aghayeva ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Molecular Markers ◽  
Genetic Polymorphism ◽  
Ssr Markers ◽  
Genome Analysis ◽  
Genetic Relationships ◽  
Research Work ◽  
Natural Populations ◽  
Gene Pools ◽  
Olive Varieties

In the article, genetic diversity of olive samples from Azerbaijan and Turkey, genotyping of natural populations and gene pools with molecular markers, associative mapping, genome analysis, carried out jointly genetic relationships between genotypes of olives and genetics originating from Azerbaijan and Turkey are studied by molecular analysis through their SSR markers. When the research work is successful, the results of this study will be demonstrated the presence of SSR markers to distinguish olive genotypes and further studies on olive production in both countries will be undertaken.

scholarly journals Exploiting the allelic polymorphism at microsatellite loci to underpin the genetic status of Cirrhinus mrigala in wild populations

2021 ◽  
Vol 58 (04) ◽  
pp. 1349-1357
Author(s):  
Hina Amjad
Keyword(s):  
Genetic Variability ◽  
Research Work ◽  
Natural Populations ◽  
Moderate Level ◽  
Allelic Polymorphism ◽  
Cirrhinus Mrigala ◽  
Mean Values ◽  
Effective Strategies ◽  
Adequate Knowledge ◽  
The Mean

An adequate knowledge regarding the genetic issues of natural populations is imperative for developing conservation and stock improvement plans. The present research work was aimed to assess the genetic variability and structuring patterns in six natural populations of Cirrhinus mrigala from Punjab province, Pakistan. The PCR based amplification of targeted loci was carried out by employing a total of 12 microsatellite markers. Based on the study inferences, moderate level of genetic diversity was observed in all the populations. The average number of alleles (Na) varied from 3.750 to 4.416 and those of effective number of alleles ranged between 3.112 to 3.856 in all the examined populations. The mean values of observed and expected heterozygosity were measured as 0.563 to 0.685 and 0.669 to 0.739, respectively. The average values of inbreeding coefficient (FIS) ranged from 0.019 to 0.184. Significant deviation from HWE was detected in 9 out of 72 tests. Among all the population pairs, low to moderate level of genetic differentiation was found. After applying AMOVA, it was revealed that most of the variations (81.15%) lied within individuals. The UPGMA dendrogram resulted in two distinct clusters. The present study inferences would be helpful for setting up effective strategies to avoid the loss of genetic variability in C. mrigala populations.

Enumeration and Identification of Asbestos Fibres in Water

1974 ◽  
Vol 32 ◽  
pp. 526-527 ◽  
Author(s):  
O. Mudroch ◽  
J. R. Kramer
Keyword(s):  
Water Supply ◽  
Water Samples ◽  
Drainage Basin ◽  
Lake Superior ◽  
Research Work ◽  
List Type ◽  
The West ◽  
Asbestos Fibre ◽  
Amphibole Asbestos

Approximately 60,000 tons per day of waste from taconite mining, tailing, are added to the west arm of Lake Superior at Silver Bay. Tailings contain nearly the same amount of quartz and amphibole asbestos, cummingtonite and actinolite in fibrous form. Cummingtonite fibres from 0.01μm in length have been found in the water supply for Minnesota municipalities.The purpose of the research work was to develop a method for asbestos fibre counts and identification in water and apply it for the enumeration of fibres in water samples collected(a) at various stations in Lake Superior at two depth: lm and at the bottom.(b) from various rivers in Lake Superior Drainage Basin.

High-voltage electron microscopy of maxillary gland of spirochete-infected brine shrimp: lesion of efferent tubule

1988 ◽  
Vol 46 ◽  
pp. 362-363
Author(s):  
G. E. Tyson ◽  
M. J. Song
Keyword(s):  
Electron Microscopy ◽  
High Voltage ◽  
Brine Shrimp ◽  
Natural Populations ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
High Voltage Electron Microscopy ◽  
Voltage Electron ◽  
High Voltage Electron ◽  
Infected Adult

Natural populations of the brine shrimp, Artemia, may possess spirochete- infected animals in low numbers. The ultrastructure of Artemia's spirochete has been described by conventional transmission electron microscopy. In infected shrimp, spirochetal cells were abundant in the blood and also occurred intra- and extracellularly in the three organs examined, i.e. the maxillary gland (segmental excretory organ), the integument, and certain muscles The efferent-tubule region of the maxillary gland possessed a distinctive lesion comprised of a group of spirochetes, together with numerous small vesicles, situated in a cave-like indentation of the base of the tubule epithelium. in some instances the basal lamina at a lesion site was clearly discontinuous. High-voltage electron microscopy has now been used to study lesions of the efferent tubule, with the aim of understanding better their three-dimensional structure.Tissue from one maxillary gland of an infected, adult, female brine shrimp was used for HVEM study.

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