geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Effect of temperature and duration of a cold protective treatment on the cold resistance of triticum aestivum cultivar ducat wheat seedlings ultrastructural study of leaf primordia nucleoli


, : Effect of temperature and duration of a cold protective treatment on the cold resistance of triticum aestivum cultivar ducat wheat seedlings ultrastructural study of leaf primordia nucleoli. Canadian Journal of Botany 63(4): 663-671

The nucleolus is sensitive to cold-protective media and to low temperatures. Nucleolar changes observed in the leaf primordia of wheat seedlings were related to the impregnation medium (distilled water or a mixture of glycerol, dimethyl sulfoxide and sucrose), to the temperature (20 or 2.degree. C), and to the duration of the pretreatment (1 to 12 days). The cryoprotective agent generated the formation of nucleoli with a diffuse granular zone. If the impregnation was done at 2.degree. C, characeristic nucleoli with an indented aspect occurred. The longer the duration of the impregnation and the more intense the subsequent freezing, the more important were the nucleolar changes. On rewarming the seedlings the various transformations were shown to be reversible.

US$29.90


Other references

Stanyer, L.; Betteridge, D.J.hn; Smith, C.C.T., 2004: Potentiation of beta-amyloid polymensation by low-density lipoprotein enhances the peptide's vasoactivity. Alzheimer's disease (AD) is characterised by the accumulation of insoluble beta-amyloid (Abeta) fibrils in the brain. Factors that promote Abeta fibrillogenesis may influence the pathogenesis of AD and represent targets for therapeutic interv...

Shim, J.Woong.; Lee, S.; Paul, B., 2007: Who responds to unsolicited sexually explicit materials on the internet?: the role of individual differences. Many studies on the effects of sexually explicit materials have focused primarily on intentional exposure to such content. Recently, researchers have begun to address the issue of the unintentional exposure to pornography on the Internet. However,...

Reim, D.; Gertler, R.; Novotny, A.; Becker, K.; zum Büschenfelde, C.Meyer.; Ebert, M.; Dobritz, M.; Langer, R.; Hoefler, H.; Friess, H.; Schumacher, C., 2012: Adenocarcinomas of the esophagogastric junction are more likely to respond to preoperative chemotherapy than distal gastric cancer. Preoperative chemotherapy has been shown to improve outcome of patients with adenocarcinoma of the esophagogastric junction (AEG) and gastric cancer (GC), and histopathologic response has been identified as an independent prognostic parameter in t...

Zhao, P.; Wang, S.; Zhang, X.; Lu, W., 2017: A Novel Prediction Model for Postmolar Gestational Trophoblastic Neoplasia and Comparison With Existing Models. The aim of this study was to comparatively study a novel model and existing models of predicting postmolar gestational trophoblastic neoplasia (GTN). Two hundred twenty-two patients with complete hydatidiform moles were enrolled retrospectively. A...

Fudenberg, G.; Paninski, L., 2009: Bayesian image recovery for dendritic structures under low signal-to-noise conditions. Experimental research seeking to quantify neuronal structure constantly contends with restrictions on image resolution and variability. In particular, experimentalists often need to analyze images with very low signal-to-noise ratio (SNR). In many...

Boyd, A.R., 1965: Recommended Qualification Requirements And Minimum Salaries For Public Health Personnel In Canada (Fifth Revision). Canadian Journal of Public Health 56: 144-161

Dobson, F.Stephen., 1994: Measures of gene flow in the Columbian ground squirrel. From analyses of published data and a review of the literature, I studied indirect and direct measures of gene flow among populations of Columbian ground squirrels, Spermophilus columbianus. New analyses were used to examine an allozyme data set (...

Isacsohn M.; Bergner Rabinowitz S.; Ferne M.; Rudensky B.; Ben Dov R., 1980: Epidemic of pharyngitis due to group c beta hemolytic streptococci. Israel Journal of Medical Sciences 16(12): 873

Hyland, C.H.; Murad, T.M.; Dismukes, W.E., 1977: Evolution of reactive lymphadenopathy into lymphoma over a nine-year period. A clinicopathologic study. Reported is a case of lymphoma which was preceded for nine years by an apparently reactive lymphadenopathy. Original slides of the multiple lymphoid tissue samples are reviewed, with emphasis on the gradually increasing numbers of mitoses, atypica...

Taber, Ra, 1986: Tx. Annual report of the Peanut Collaborative Research Support Program CRSP: 6?] 217-237