Genetic variability

Twenty one genotypes including check Krishna were evaluated in randomized block design with three replications during kharif-2017 at research farm of TCA, Dholi for estimation of genetic variability among them. Genotypes varied significantly for all the morpho-physiological characters indicating the presence of considerable variability among the genotypes. Significant bidirectional shift was observed in the mean values as compared to better check, thus provided scope for selection.

5p angicungduoc6 22-07-2020 19 2   Download

An experiment was conducted to generate a broad genetic variability through induced mutation using physical and chemical mutagens. Three doses each of gamma rays (20, 40 and 60kR), ethyl methane sulphonate (0.2, 0.4 and 0.6%), nitrosoguanidine (0.005, 0.010, and 0.015%), maleic hydrazide (0.01, 0.02 and 0.03%) and their combinations were administered to the seed of two greengram varieties, Sujata and OBGG-52.

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The present investigation was under taken with the objectives to estimate genetic variability, heritability and genetic advance for yield and yield contributing components of cucumber. The experimental materials for this investigation were fourteen genotypes of cucumber consisting of parthenocarpic, gynoecious and monecious germplasms crossed in line × tester mating design produced thirty three hybrids (F1). Thirty three F1 crosses along with their parents were evaluated in two environments viz.

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Cycads occur in lowland forests and are threatened by their degradation, fragmentation and over-exploitation. Our results indicate that cycad population sizes were very small (less 100 individuals) with high propagules. These increased mating between closely related individuals growing in clumps. The allozyme data show although all studied cycads maintained high levels of genetic diversity, an average of 0.556 (0.491 in C. hoabinhensis to 0.598 in C. chevalieri ), the degree of inbreeding was high.

10p 12120609 01-06-2020 19 3   Download

In order compute genetic variability, heritability and genetic advance expressed as per cent of mean, an investigation was carried out with 79 plants of F2 population of MFC-09-12 × PGCP-12 and 90 plants of F2population of MFC-08-14 × PL-3 in cowpea. Considerably high amount of variability was observed for the thirteen quantitative and qualitative characters under study.

9p nguaconbaynhay5 16-05-2020 25 1   Download

Biotherapeutics (BTs), one of the fastest growing classes of drug molecules, offer several advantages over the traditional small molecule pharmaceuticals because of their relatively high specificity, low off-target effects, and biocompatible metabolism, in addition to legal and logistic advantages. However, their clinical utility is limited, among other things, by their high immunogenic potential and/or variable therapeutic efficacy in different patient populations.

7p caothientrangnguyen 09-05-2020 26 1   Download

Nourseothricins (syn. Streptothricins), agroupof nucleoside peptides produced by several streptomycete strains, contain a polyb-lysine chain of variable length attached in amide linkage to the amino sugar moiety gulosamine of the nucleoside portion. We show that the nourseothricin-pro-ducingStreptomyces nourseicontains an enzyme (NpsA) of an apparentMr56 000 that speci®cally activatesb-lysine by adenylation but does not bind to it as a thioester.

11p research12 29-04-2013 24 4   Download

Fourier transform infrared spectroscopy was performed on human leukemic daunorubicin-sensitiveK562 cells and their multiresistant counterpart derived by selection. Statistical analysis, including variable reduction and linear discrimi-nant analysis was performed on sensitive and multiresistant cells spectra in order to establish a diagnostic tool for multiresistant pattern. For each of the twomethods of data reduction tested [genetic algorithm or principal component analysis (PCA)] discriminationbetween the twocell lineswas found to be possible....

6p research12 23-04-2013 43 2   Download

Intracellularly expressed antibodies (intrabodies) have been used to inhibit the function of various kinds of protein inside cells. However, problems with stability and functional expression of intrabodies in the cytosol remain unsolved. In this study, we show that single-chain variable fragment (scFv) intrabodies constructed with a heavy chain variable (VH) leader signal sequence at the N-terminus were translocated from the endoplasmic reti-culum into the cytosol of T lymphocytes and inhibited the function of the target molecule, Wiskott–Aldrich syndrome protein (WASP)....

14p dell39 27-03-2013 39 5   Download

Vertebrate metallothioneins are found to contain Zn(II) and variable amounts of Cu(I),in vivo, and are believed to be important for d 10 -metal control. To date, structural information is available for the Zn(II) and Cd(II) forms, but not for the Cu(I) or mixed metal forms. Cu(I) binding to metallothionein-1 has been investigated by circular dichroism, luminescence and 1 H NMR using two synthetic fragments representing thea- and the b-domain.

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In eukaryotes, meiosis leads to genetically variable gametes through recom-bination between homologous chromosomes of maternal and paternal ori-gin. Chromatin organization following meiotic recombination is critical to ensure the correct segregation of homologous chromosomes into gametes. However, the mechanism of chromatin organization after meiotic recombi-nation is unknown.

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The last decade has seen clear links emerge between the genetic determi-nants and neuropathological hallmarks of parkinsonism and dementia, notably with the discovery of mutations ina-synuclein and tau. Following the description of mutations in LRRK2 linked to Parkinson’s disease, char-acterized by variable pathology including eithera-synuclein or tau deposi-tion, it has been suggested that LRRK2 functions as an upstream regulator of Parkinson’s disease pathogenesis.

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Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Population crash, population flush and genetic variability in cage populations of Drosophila melanogaster

11p toshiba21 16-11-2011 63 3   Download

Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học Journal of Biology đề tài: The value of using probabilities of gene origin to measure genetic variability in a population

0p toshiba20 15-11-2011 45 2   Download

Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học Journal of Biology đề tài: Genetic variability within French race and riding horse breeds from genealogical data and blood marker polymorphisms

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Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học Journal of Biology đề tài: Genetic variability of age and weight at puberty, ovulation rate and embryo survival in gilts and relations with production traits

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Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học Journal of Biology đề tài: Genetic variability of muscle biological characteristics of young Limousin bulls

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Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học Journal of Biology đề tài: Genetic variability in French populations of the Corsican mouflon (Ovis ammon musimon): analysis of 2 blood proteins and red-cell blood groups

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Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học thế giới đề tài: Genetic components of litter size variability in sheep

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Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học Journal of Biology đề tài: Genetic variability and differentiation in roe deer (Capreolus capreolus L) of Central Europe

0p toshiba20 12-11-2011 48 3   Download