Please wait, while we are loading the content...
Please wait, while we are loading the content...
| Content Provider | Springer Nature Link |
|---|---|
| Author | Grossnickle, Steven C. Russell, John H. |
| Copyright Year | 2010 |
| Abstract | • Variation in the ability of western redcedar (Thuja plicata Donn ex D. Don) populations to withstand water stress may exist because this species is found in coastal and interior biogeoclimatic subzones representing the full range of precipitation regimes in British Columbia, Canada. • Seven western redcedar populations from locations in British Columbia, representing a wide range of habitat types, were assessed for their gas exchange and water relations response to controlled drought. • Before drought, population variation occurred in stomatal conductance, net CO2 assimilation rate and intrinsic water use efficiency and the relative water content at turgor loss point. During drought, populations had different responses of net CO2 assimilation to decreasing predawn shoot water potential. After drought, populations differed in stomatal conductance and intrinsic water use efficiency, plus osmotic potential at turgor loss point, osmotic potential at saturation and apparent cuticular transpiration. Western redcedar populations from drier-inland habitats had a lower osmotic potential at turgor loss point, lower relative water content at turgor loss point and lower apparent cuticular transpiration in response to drought than populations from coastal origin with temperate maritime habitat. • Reduction of cuticular water loss and adjustments of cellular water relations in response to drought was found to occur among seven western redcedar populations originating along a precipitation gradient while; there were minimal population differences in the gas exchange response to drought. • Les variations de capacité à résister au déficit hydrique dans des populations de thuyas géants (Thuja plicata Donn Ex D. Don) apparaissent parce que cette espèce se rencontre dans les sous-zones biogéoclimatiques côtières et de l’intérieur représentant l’éventail complet de régimes de précipitations en Colombie britannique (Canada). • Sept populations de thuyas géants issues de sites de Colombie britannique, représentant un large éventail des types d’habitats, ont été évaluées pour leurs échanges gazeux et leurs relations hydriques en réponse à une sécheresse contrôlée. • Avant la sécheresse, une variabilité existait entre populations pour la conductance stomatique, l’assimilation nette de CO2, l’efficience intrinsèque d’utilisation de l’eau et la teneur relative en eau au point de perte de turgescence. Pendant la sécheresse, les populations ont présenté des réponses différentes de l’assimilation nette de CO2 à la baisse du potentiel hydrique de base. Après la sécheresse, les populations différaient en conductance stomatique et efficience intrinsèque d’utilisation de l’eau, mais également en potentiel osmotique au point de perte de turgescence, en potentiel osmotique à saturation et en transpiration cuticulaire apparente. Les populations de thuyas géants des habitats intérieurs les plus secs présentaient un plus faible potentiel osmotique au point de perte de turgescence, une plus faible teneur en eau au point de perte de turgescence et une plus faible transpiration cuticulaire apparente en réponse à la sécheresse que les populations d’origine côtière avec un habitat maritime tempéré. • Une réduction des pertes d’eau cuticulaires et des ajustements des relations hydriques cellulaires en réponse à la sécheresse ont été trouvés parmi sept populations de thuyas géants originaires de sites se trouvant le long d’un gradient de précipitations, alors qu’il n’y avait que de faibles différences entre populations pour la réponse des échanges gazeux à la sécheresse. |
| Starting Page | 506 |
| Ending Page | 506 |
| Page Count | 1 |
| File Format | |
| ISSN | 12864560 |
| Journal | Annals of Forest Science |
| Volume Number | 67 |
| Issue Number | 5 |
| e-ISSN | 1297966X |
| Language | French |
| Publisher | Springer Netherlands |
| Publisher Date | 2010-01-01 |
| Publisher Institution | Institut National de la Recherche Agronomique (INRA) |
| Publisher Place | Dordrecht |
| Access Restriction | Subscribed |
| Subject Keyword | performances de populations de thuyas géants échanges gazeux relations hydriques réponse à la sécheresse Forestry Wood Science & Technology Forestry Management Tree Biology Environment |
| Content Type | Text |
| Resource Type | Article |
| Subject | Ecology Forestry |
National Digital Library of India (NDLI) is a virtual repository of learning resources which is not just a repository with search/browse facilities but provides a host of services for the learner community. It is sponsored and mentored by Ministry of Education, Government of India, through its National Mission on Education through Information and Communication Technology (NMEICT). Filtered and federated searching is employed to facilitate focused searching so that learners can find the right resource with least effort and in minimum time. NDLI provides user group-specific services such as Examination Preparatory for School and College students and job aspirants. Services for Researchers and general learners are also provided. NDLI is designed to hold content of any language and provides interface support for 10 most widely used Indian languages. It is built to provide support for all academic levels including researchers and life-long learners, all disciplines, all popular forms of access devices and differently-abled learners. It is designed to enable people to learn and prepare from best practices from all over the world and to facilitate researchers to perform inter-linked exploration from multiple sources. It is developed, operated and maintained from Indian Institute of Technology Kharagpur.
Learn more about this project from here.
NDLI is a conglomeration of freely available or institutionally contributed or donated or publisher managed contents. Almost all these contents are hosted and accessed from respective sources. The responsibility for authenticity, relevance, completeness, accuracy, reliability and suitability of these contents rests with the respective organization and NDLI has no responsibility or liability for these. Every effort is made to keep the NDLI portal up and running smoothly unless there are some unavoidable technical issues.
Ministry of Education, through its National Mission on Education through Information and Communication Technology (NMEICT), has sponsored and funded the National Digital Library of India (NDLI) project.
| Sl. | Authority | Responsibilities | Communication Details |
|---|---|---|---|
| 1 | Ministry of Education (GoI), Department of Higher Education |
Sanctioning Authority | https://www.education.gov.in/ict-initiatives |
| 2 | Indian Institute of Technology Kharagpur | Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project | https://www.iitkgp.ac.in |
| 3 | National Digital Library of India Office, Indian Institute of Technology Kharagpur | The administrative and infrastructural headquarters of the project | Dr. B. Sutradhar bsutra@ndl.gov.in |
| 4 | Project PI / Joint PI | Principal Investigator and Joint Principal Investigators of the project |
Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon |
| 5 | Website/Portal (Helpdesk) | Queries regarding NDLI and its services | support@ndl.gov.in |
| 6 | Contents and Copyright Issues | Queries related to content curation and copyright issues | content@ndl.gov.in |
| 7 | National Digital Library of India Club (NDLI Club) | Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach | clubsupport@ndl.gov.in |
| 8 | Digital Preservation Centre (DPC) | Assistance with digitizing and archiving copyright-free printed books | dpc@ndl.gov.in |
| 9 | IDR Setup or Support | Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops | idr@ndl.gov.in |
|
Loading...
|