The Photosynthetic Response of the Perennial Ryegrass (Lolium Perenne) in its Fifth Year of Free-Air CO(sub 2) Enrichment (Face) at Eschikon, Switzerland

Thumbnail image of item number 1 in: 'The Photosynthetic Response of the Perennial Ryegrass (Lolium Perenne) in its Fifth Year of Free-Air CO(sub 2) Enrichment (Face) at Eschikon, Switzerland'.
Thumbnail image of item number 2 in: 'The Photosynthetic Response of the Perennial Ryegrass (Lolium Perenne) in its Fifth Year of Free-Air CO(sub 2) Enrichment (Face) at Eschikon, Switzerland'.
Thumbnail image of item number 3 in: 'The Photosynthetic Response of the Perennial Ryegrass (Lolium Perenne) in its Fifth Year of Free-Air CO(sub 2) Enrichment (Face) at Eschikon, Switzerland'.
Thumbnail image of item number 4 in: 'The Photosynthetic Response of the Perennial Ryegrass (Lolium Perenne) in its Fifth Year of Free-Air CO(sub 2) Enrichment (Face) at Eschikon, Switzerland'.
Showing 1-4 of 68 pages in this report.

PDF Version Also Available for Download.

Description

Stands of Ryegrass (Lolium perenne L. cv.Bastion) were grown in the field at ambient or elevated (600 {micro}mol mol{sup {minus}1}) [CO{sub 2}], high (560 kg Ha{sup {minus}1} y{sup {minus}1}) or low (140 kg Ha{sup {minus}1} y{sup {minus}1}) nitrogen addition and were harvested five times a year during the growing season. The plants were sown during 1992, additional plots being sown during 1995. These were in their fifth year and second year of growth respectively. Exposure to elevated [CO{sub 2}] was carried out with a Free-Air CO{sub 2} Enrichment (FACE) system which provides the most realistic system of fumigation currently available. … continued below

Physical Description

65 pages

Creation Information

Anderson, Jonathon P.; Long, Stephen P. & Williams, Jon December 31, 1998.

Context

This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by the UNT Libraries Government Documents Department to the UNT Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 52 times. More information about this report can be viewed below.

Who

People and organizations associated with either the creation of this report or its content.

Authors

Sponsor

Publisher

Provided By

UNT Libraries Government Documents Department

Serving as both a federal and a state depository library, the UNT Libraries Government Documents Department maintains millions of items in a variety of formats. The department is a member of the FDLP Content Partnerships Program and an Affiliated Archive of the National Archives.

About | Browse this Partner

Contact Us

Corrections Questions

What

Descriptive information to help identify this report. Follow the links below to find similar items on the Digital Library.

Description

Stands of Ryegrass (Lolium perenne L. cv.Bastion) were grown in the field at ambient or elevated (600 {micro}mol mol{sup {minus}1}) [CO{sub 2}], high (560 kg Ha{sup {minus}1} y{sup {minus}1}) or low (140 kg Ha{sup {minus}1} y{sup {minus}1}) nitrogen addition and were harvested five times a year during the growing season. The plants were sown during 1992, additional plots being sown during 1995. These were in their fifth year and second year of growth respectively. Exposure to elevated [CO{sub 2}] was carried out with a Free-Air CO{sub 2} Enrichment (FACE) system which provides the most realistic system of fumigation currently available. Elevated [CO{sub 2}] increased diurnal CO{sub 2} uptake by between 40 to 83% while reducing stomatal conductance by between 1 and 38% in all of the 1992 grown plants measured at high [CO{sub 2}]. Analysis of the A/c{sub i} response of 1992 grown plants showed no acclimation of the photosynthetic apparatus in response to elevated [CO{sub 2}]--both V{sub c,max} (a measure of the maximum in vivo rate of carboxylation) and J{sub max} (a measure of the maximum capacity for the regeneration of RuBP) showed no significant change during any of the periods of regrowth. In contrast the leaves of 1995 grown plants, appeared to be experiencing an acclimatory change in their photosynthetic apparatus in response to elevated [CO{sub 2}]. However, this negative response seemed to be removed directly after a harvest when the source:sink balance had increased. The apparent lack of an acclimatory response after almost 5 years of growth at elevated [CO{sub 2}], suggests that L. perenne may be close to achieving the appropriate photosynthetic adjustments which would allow it to attain a significantly higher photosynthetic potential.

Physical Description

65 pages

Notes

OSTI as DE00758984

Source

  • Other Information: PBD: 31 Dec 1998

Language

Item Type

Identifier

Unique identifying numbers for this report in the Digital Library or other systems.

Collections

This report is part of the following collection of related materials.

Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

About | Browse this Collection

What responsibilities do I have when using this report?

Digital Files

When

Dates and time periods associated with this report.

Creation Date

  • December 31, 1998

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

Description Last Updated

  • April 20, 2020, 3:40 p.m.

Usage Statistics

When was this report last used?

Yesterday: 0
Past 30 days: 0
Total Uses: 52
More Statistics

Interact With This Report

Here are some suggestions for what to do next.

Start Reading

Thumbnail image of item number 1 in: 'The Photosynthetic Response of the Perennial Ryegrass (Lolium Perenne) in its Fifth Year of Free-Air CO(sub 2) Enrichment (Face) at Eschikon, Switzerland'.
Thumbnail image of item number 2 in: 'The Photosynthetic Response of the Perennial Ryegrass (Lolium Perenne) in its Fifth Year of Free-Air CO(sub 2) Enrichment (Face) at Eschikon, Switzerland'.
Thumbnail image of item number 3 in: 'The Photosynthetic Response of the Perennial Ryegrass (Lolium Perenne) in its Fifth Year of Free-Air CO(sub 2) Enrichment (Face) at Eschikon, Switzerland'.
Thumbnail image of item number 4 in: 'The Photosynthetic Response of the Perennial Ryegrass (Lolium Perenne) in its Fifth Year of Free-Air CO(sub 2) Enrichment (Face) at Eschikon, Switzerland'.

PDF Version Also Available for Download.

Citations, Rights, Re-Use

International Image Interoperability Framework

IIF Logo

We support the IIIF Presentation API

Links for Robots

Helpful links in machine-readable formats.

Archival Resource Key (ARK)

International Image Interoperability Framework (IIIF)

Metadata Formats

Images

URLs

Stats

Anderson, Jonathon P.; Long, Stephen P. & Williams, Jon. The Photosynthetic Response of the Perennial Ryegrass (Lolium Perenne) in its Fifth Year of Free-Air CO(sub 2) Enrichment (Face) at Eschikon, Switzerland, report, December 31, 1998; Upton, New York. (https://digital.library.unt.edu/ark:/67531/metadc709147/: accessed April 24, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

Back to Top of Screen