EurekaMag.com logo
+ Site Statistics
References:
48,253,228
Abstracts:
22,798,842
+ Resolve Accession
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
Submit PDF Full TextSubmit PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Differences in susceptibility to matsucoccus feytaudi duc. homoptera margarodidae in cluster pine pinus pinaster ait. according to provenance


, : Differences in susceptibility to matsucoccus feytaudi duc. homoptera margarodidae in cluster pine pinus pinaster ait. according to provenance. Annales des Sciences Forestieres (Paris) 43(4): 459-474

Observations were made on the susceptibility of some provenances of cluster pine (Pinus pinaster AIT.) to infestation by Matsucoccus feytaudi DUC., in a comparative plantation set up in 1965 in the Maures-Hills (provence Southern France). Observations consisted of: - symptom-notations tree by tree, carried out from 1979 to 1984; - a search for an explanation of the observed differences, through, on the one hand, an evaluation of the insect population level (by trapping females and by counting second instar nymphae). On the other hand, in certain provenances only, through an examination of the character of the bark-tissues. Symptom-notations (table 1 and figure 1) point to important differences between the tested provenances regarding susceptibility to M. feytaudi. Under the conditions of the experiment, provenances from Cuenca (Spain) and from Tamjoute (Morocco) appeared symptom-free (or almost sympton-free, for the first one), other provenances: Mimizan (Landes, France), Leiria (Portugal), Marghese (Corsica, France), Genova (Italy) and Maures (France) were affected to different degrees, the two latter being very heavily affected. The results of trapping (table 2) and counting (see in text 3.22.) suggest that the immunity of the Cuenca and Tamjoute provenances seems to be related to the impossibility for Matsucoccus to multiply to important and injurious levels on these provenances. The observations, on the bark, and other previous observations (CARLE, 1973; RIOM, 1980) suggest different hypotheses for the mechanisms which might govern these differences. Mechanical factors, such as the structure of the bark which seems to constitute an obstacle for the settlement of the crawlers. They might be induced genetically and/or by environmental conditions (edaphic, climatic..). - Physiological and/or biochemical factors of the host plant, possibly genetically induced.

(PDF 0-2 workdays service)

Order PDF Full Text

Close
Close

Click here to order any other PDF Full Text


Accession: 005151020

PDF Full Text: Submit


Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:
Close
Close

Other references

Mason J., 1987: Spectral and kinetic studies on the binding of trithiomolybdate to bovine and canine serum albumin in vitro the interaction with copper. Spectral studies showed that copper and trithiomolybdate participated in a three-way interaction with bovine and canine serum albumin. The interaction with the proteins was affected by increased pH and ionic strength. Kinetic studies of binding eq...

Sridhar, Kumar; Porter, Doranne; Gupta, Bhavdeep; Fischman, David; Goldberg, Sheldon; Rake, Randal; Fenton, Sarah; Gebhardt, Sharon; Savage, Michael, 1994: Reduction in Peripheral Vascular Complications after Coronary Stenting by the Use of a Pneumatic Vascular Compression Device. Circulation 90(4 PART 2): I621

Trier J.S., 1979: Comparative freeze fracture studies on crypt and villus cell plasma membranes of primate small intestinal mucosa. Gastroenterologypart 2: 1192

Kazmierczak, Bernd; Pohnke, Yvonne; Bullerdiek, Joern, 1996: Fusion transcripts between the HMGIC gene and RTVL-H-related sequences in mesenchymal tumors without cytogenetic aberrations. Chromosomal abnormalities of the region 12q13-q15 are very frequent among human benign tumors mainly of mesenchymal origin such as uterine leiomyomas, pleomorphic adenomas, lipomas, or pulmonary chondroid hamartomas. Because of these cytogenetic a...

Foxcroft, L. M.; Evans, E. B.; Porter, A. J., 2007: Difficulties in the pre-operative diagnosis of phyllodes tumours of the breast: A study of 84 cases. Eighty-four phyllodes tumours (71 benign, eight borderline and five malignant) diagnosed over a 16-year period were studied retrospectively, to assess the diagnostic value of the pre-operative modalities used. Mammography and ultrasound appearanc...

Tischner, T.; Rajkaine Vegh, K.; Koszegi, B., 1997: Effect of growth medium on the growth of cereals in the phytotron. The effect of the growth medium composition was studied in the case of wheat and barley plants grown in phytotron units. Four soils were created by mixing chernozem with the commercial composts Vegasca and Terra-vita and with sand. The major data...

DeEll,J.R.; Murr,D.P.; Ehsani-Moghaddam,B., 2008: Quality changes of Shiro yellow plums in response to treatment with 1-methylcyclopropene. The overall objective of this study was to assess the effects of 1-methylcyclopropene (1-MCP) on the quality of yellow "Shiro" plums. During 2 years of study, plums were harvested from commercial orchards and exposed to 1 micro L/L of 1-...

Taherzadeh, M. J.; Gustafsson, L.; Niklasson, C.; Liden, G., 1999: Conversion of furfural in aerobic and anaerobic batch fermentation of glucose by Saccharomyces cerevisiae. The effect of furfural on aerobic and anaerobic batch cultures of Saccharomyces cerevisiae CBS 8066 growing on glucose was investigated. Furfural was found to decrease both the specific growth rate and ethanol production rate after pulse additions...

Haggblade, S.; Hazell, P.; Reardon, T., 2002: Strategies for stimulating poverty-alleviating growth in the rural nonfarm economy in developing countries. This paper takes up the challenge of reassessing and revising policies and programmes for promoting the rural nonfarm economy (RNFE) in developing countries given the new and unfolding context of trade liberalization and globalization. Section 2 o...

Crosignani P.G.; Nencioni T., 1971: Endocrine activity of diabetic placenta serial measurement of serum human chorionic gonadotropin and human chorionic somatotropin during pregnancy. Acta Endocrinologica Supplementum 155: 83