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Progress of Molecular Biology of CMS in Maize

ZHANG Zu-xin,ZHANG Fang-dong,ZHENG Yong-lian,

遗传 , 2002,
Abstract: In the paper,we have summarized the molecular biological accomplishment acquired and accepted by most of maize researchers on CMS of maize. A brief review of current molecular biological progress of CMS of maize are displayed in the paper. These progresses concern in the positioning,cloning and maker-assisted selection of nucleic genes associated with fertility,expression and cloning of cytoplasmic genes associated with male sterility,In order to elucidate the molecular mechanism of CMS of maize, the areas about cloning and expression profiling of male sterile nucleic genes, and functional genomics of mitochondria, and interaction cytoplasmic genes with nucleic genes will need to be researched in the future.
The Status of CMS  [PDF]
Joseph R. Incandela
Physics , 2007,
Abstract: After a brief overview of the Compact Muon Solenoid (CMS) experiment, the status of construction, installation and commissioning is described. Very good progress has been achieved in the past year. Though many significant challenges still lie ahead, CMS should be ready for recording data from first collisions in the Large Hadron Collider (LHC) accelerator complex at CERN
Analysis of the unexplored features of rrs (16S rDNA) of the Genus Clostridium
Vipin Kalia, Tanmoy Mukherjee, Ashish Bhushan, Jayadev Joshi, Pratap Shankar, Nusrat Huma
BMC Genomics , 2011, DOI: 10.1186/1471-2164-12-18
Abstract: Seven hundred sixty five rrs sequences (> 1200 nucleotides, nts) belonging to 110 Clostridium species were analyzed. On the basis of 404 rrs sequences belonging to 15 Clostridium species, we have developed species specific: (i) phylogenetic framework, (ii) signatures (30 nts) and (iii) in silico restriction enzyme (14 Type II REs) digestion patterns. These tools allowed: (i) species level identification of 95 Clostridium sp. which are presently classified up to genus level, (ii) identification of 84 novel Clostridium spp. and (iii) potential reduction in the number of Clostridium species represented by small populations.This integrated approach is quite sensitive and can be easily extended as a molecular tool for diagnostic and taxonomic identification of any microbe of importance to food industries and health services. Since rapid and correct identification allows quicker diagnosis and consequently treatment as well, it is likely to lead to reduction in economic losses and mortality rates.Bacterial identification becomes a challenge particularly in case they are either involved in an industrial process with heavy investments at risk or are a serious threat to human beings. Sequencing of the rrs (16S rDNA) of bacteria is vigorously pursued for correct identification and classification [1-3]. It has led to a large database of 1,237,963 entries http://rdp.cme.msu.edu/ webcite. The key questions which we are addressing: Whether there are certain latent and as yet un-explored features in the nucleotide sequences of the rrs, which can be used to define the phylogenetic limits of a particular genus or species? Are there certain unique patterns of nucleotide strings (length and order) and signatures within them, which can enable tracking the identity of an organism within the phylogenetic framework? In fact, it has been stated that novel biological findings are being driven by comparison and integration of massive data sets [4]. They also predict that numerous tools will b
Identification of sterile cytoplasm (CMS) in maize by using specific mtDNA primers  [PDF]
Ignjatovi?-Mici? Dragana,Nikoli? Ana,Mladenovi?-Drini? Sne?ana,Van?etovi? Jelena
Genetika , 2006, DOI: 10.2298/gensr0603227i
Abstract: Thirty sources of cytoplasmic male sterility (CMS) from Maize Gene Bank "Zemun Polje", distributed among Yugoslav OP varieties, have been tested for the presence of particular type of cytoplasm by a single seed multiplex PCR approach with specific primer pairs for T, C and S type cytoplasm. Combination of three pairs of primers in a single PCR reaction, corresponding to the chimeric regions of mtDNA sequences specific for each type of CMS, allowed reliable identification of the major CMS types. Dominant presence of S type cytoplasm was detected. For sources where there is no clear identification of the type of CMS (absence of the PCR band) there is a reasonable doubt that it could be a new, yet unidentified type of CMS.
Influence of Soil Moisture and Air Temperature on the Stability of Cytoplasmic Male Sterility (CMS) in Maize (Zea mays L.)  [PDF]
Heidrun Bueckmann, Katja Thiele, Joachim Schiemann
Agricultural Sciences (AS) , 2016, DOI: 10.4236/as.2016.72007
Abstract: Cytoplasmic male sterility (CMS) is a maternally inherited trait that suppresses the production of viable pollen. CMS is a useful biological tool for confinement strategies to facilitate coexistence of genetically modified (GM) and non-GM crops in case where it is required. The trait is reversible and can be restored to fertility in the presence of nuclear restorer genes (Rf genes) and by environmental impacts. The aim of this study was to investigate the influence of the level of irrigation on the stability of CMS maize hybrids under defined greenhouse conditions. Additionally the combination of irrigation and air temperature was studied. Three CMS maize hybrids were grown with different levels of irrigation and in different temperature regimes. Tassel characteristics, pollen production and fertility were assessed. The CMS stability was high in hot air temperatures and decreased in lower temperatures. The level of irrigation had no major effect on the level of sterility. The extent of these phenomena was depending on the genotype of CMS maize and should be known before using CMS for coexistence purposes.
Searches in CMS  [PDF]
Lars Sonnenschein
Physics , 2011,
Abstract: We discuss the results of searches for various new physics phenomena, including supersymmetry, in pp collisions at 7 TeV delivered by the LHC and collected with the CMS detector. These results demonstrate a good understanding of the detector and backgrounds in a variety of channels and in many cases they set the most stringent limits on these new physics phenomena, surpassing previous experiments.
CMS Central Hadron Calorimeter  [PDF]
Howard S. Budd
Physics , 2001, DOI: 10.1016/S0920-5632(97)00104-7
Abstract: We present a description of the CMS central hadron calorimeter. We describe the production of the 1996 CMS hadron testbeam module. We show the results of the quality control tests of the testbeam module. We present some results of the 1995 CMS hadron testbeam.
Evaluation of S1 Maize (Zea mays L.) Families for Green Fodder Yield  [PDF]
Syed Sadaqat Mehdi,Muhammad Ahsan
Pakistan Journal of Biological Sciences , 1999,
Abstract: The experiment was carried out to evaluate the best one hundred S1 families for green fodder yield and other plant traits to select superior families for further inter-crossing. The S1 families were found different for green fodder yield per plant and number of leaves per plant. The values of coefficients of variation were found to be high for green fodder weight per plant (18.34%). These results indicate that there was more variability among S1 lines for green fodder weight per plant. Green fodder weight was positively and highly significantly correlated with number of leaves per plant and plant height. However, it is concluded from the results that green fodder weight can be used as selection criteria while selecting superior S1 maize families.
Status and Commissioning of the CMS Experiment  [PDF]
O. Buchmueller,F. -P. Schilling
Physics , 2007, DOI: 10.1016/j.nuclphysbps.2007.05.029
Abstract: After a brief overview of the Compact Muon Solenoid (CMS) experiment, the status of construction and installation is described in the first part of the note. The second part of the document is devoted to a discussion of the general commissioning strategy of the CMS experiment, with a particular emphasis on trigger, calibration and alignment. Aspects of b-physics, as well as examples for early physics with CMS are also presented. CMS will be ready for data taking in time for the first collisions in the Large Hadron Collider (LHC) at CERN in late 2007.
The CMS Silicon Strip Tracker  [PDF]
P. Azzurri
Physics , 2005, DOI: 10.1088/1742-6596/41/1/011
Abstract: With over 200 square meters of sensitive Silicon and almost 10 million readout channels, the Silicon Strip Tracker of the CMS experiment at the LHC will be the largest Silicon strip detector ever built. The design, construction and expected performance of the CMS Tracker is reviewed in the following.
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